Yeah 4 real 😂😂😂. I once had a renault engine that run on 2 instead of 4. I removed the head and let it get pressed tested head was fine. Bottom block was garbage 😂 i wanted ro make sure what part failed 😂
His face became real serious towards the end when he asked the accusatory question, it was so serious that I went ahead and began popping extra bags of popcorn. To eat when reading the sensitive comments of those guilty lol
@kevinkurtz9889 - I work for a CAT dealer so I've seen a few D343s but they're pretty scarce these days and getting hard to find parts for. The old guys in the shop will tell you, "The D343 put the 'pillar' in Caterpillar." I mostly build 3306, 3406, 3408, and the bigger C-series engines. They're all pretty solid platforms.
@eddiehennig7835 I spent 16 years with a D343 in a 988 Cat loader. I finished in 980 F with 3406. When I retired I took the serial number from the old 88 for a private license number. 87A1689. What a beast.
Blown head gasket does steam clean the cylinder and piston; water and coolant under high temperature and pressure, continuously in that cylinder. Dave, you are providing an important service to many. Long life to you.
Dave you are the best I have learned w we quite a bit from you and am 61yo I was grew up basically in the shop with my dad my big brother and my uncles they were all motor men gas & diesel and they skipped over some of the information you talked about 👍🏼💯
So i did a bit of looking into this. Ring wash is actually a term used to describe a condition in which excessive fuel gets into the combustion chamber, whegher by a leaking injector or vacuum leak or whatnot, and washes the oil off the cylinder walls, causing excessive wear. Im not saying your diagnosis isnt accurate, just yohr terminology. Keep up the great work. I went through a picture of a head job i just did, and sure enough, the edges of the piston were clean!
@@tomdipasquale9633... not if we all protest/refuse/rebel.... they will let to automated and then you're carless needing a permit to leave town with fees if you're late, etc.... absolute TYRANNY
Dave u r awsome ,bout a million times Dave but that's what I love about working on cars you never stop learning because they never stop changing them,and a lot of folks don't understand that.
So "refreshing" to have someone who can actually tell you exactly what is going on AND speak clearly with the explanation in a way everyone can understand.. can you please run for president??!! 😁
I see this quite often as a aftermarket warranty inspector where the shop is now asking for a long block, and they had already put a cylinder head on it. I believe this condition gets overlooked quite often, and it’s more prevalent today because of direct injection engine, and the increased amount of crankcase papers that they’re force to recycle.
Vehicle now a days are designed to be more fuel efficient. Thus the rings are looser. Which allows for less friction. But on the downside it will burn more oil verse older engines. Hope that helps.
@@ivanvarela3215 my buddy did oil changes on his jeep religiously every 2500 miles and it put the rod through the block. Oil changes have nothing to do with this.
@@ivanvarela3215most manufacturers are telling drivers it's okay to burn up to 1qt per 1000 miles (which is crazy) and this is with the recommended oil grade and change interval. They are just trying to get out of warranty work but this tells you a lot about just how loose these engines are built.
I had a ‘06 GMC with a 5.3. LM7 is the code for the engine. I was burning oil so bad on startup I went as far as changing my valve stem seals. Only helped for about 3k miles, then back to a quart every 200 miles. Then I read about the shoddy PCV they put on that truck from the factory, and sure enough I have original valve covers. Replaced the valve cover and PCV line, hasn’t burned a drop since. It’s a 320,000 mile motor, and somehow oil doesn’t make it past the rings. I changed the oil 2,000 miles ago and it’s still right on the full mark where I left it… weird. Edit: lots of Lucas and high quality oil to keep my seals from leaking like crazy. It has the usual drip from the rear main, but that’s all it’s ever been, a very slow drip.
@@aballin4143 my comments are acting crazy right now. It’s 04-06 with the integrated design. it’s got almost 322,000 miles and doesn’t burn or leak a drop of oil. Lots of oil changes and Lucas oil stabilizer have gotten me to this point. I also did an engine flush recently which really helped out the performance of the engine, surprisingly. Got all kinds of sludge out of it 🥲
videos-for-friends anytime u flush a motor & "all kinds of sludge" comes out when u drain it; it IS recommended that u also drop the pan @ that point and make sure your oil pick-up screen is clean! If it really has that much sludge it'll never all drain out through the hole and the pick-up screen can easily get clogged now...
Every time I did head gasket replacement ,the heads were machined to be tru . But thx for this cause if she was using a ton of oil it would get a full rebuild . It’s the way I’ve always done it . Never a issue after that .
I have seen where the head gasket blew and was leaking antifreeze engine coolant into the combustion chamber and literally made the top of the piston look like it was brand new. It was clean as a button.
Again Dave showing his expertise and honesty, I love his videos and the info he puts out. I highly recommend any shop owner, mechanic or machine shop owner watch Dave's videos. I'm a pretty good mechanic but I always learn something new from Dave.
That is very nice to know i never looked at it in that way. I think the ring wash goes back to changing your oil at factory recommend milage. Like you said before cut the milage recommendation in half and ring wash may not happen
Built lots of junkyard motors and it was very rare to find one with a good short block. So rare that I never considered selling one . My reputation wasnt worth the few bucks to fix the accidental factory assembly.
Literally 4 days ago I put a new headgasket on a engine that is back in the car now. I had top end problems and did all the valves and was contemplating doing the bottom end since it was out but didn't know if it needed it... wish I saw this 5 days ago. Thanks for the video all the same Dave! Now I know!
@HighPriest1776 The engine has many parts but they can be considered in two different areas, the top and bottom end. Typically anything above the headgasket (valves, lifters, pushrods, camshaft, head, etc) is considered top end and anything below the head gasket is considered bottom end (pistons, crankshaft, oil pump, connecting rods, etc)
The fun part is actually getting to the engine. So much emissions and computer crap and wires its amazing anybody can pull a engine without screwing something up.
We had new heads put on our 150k mile 454 in our farm truck. This is what the bottom end looks like and it needs a quart of oil every tank or so. No leaks, just burning.
I am glad someone said it, Thank You Mr Dave...for the work that you do I and others, appreciate it beyond words, because I told myself this, and this the second time I say it and know to the world.. anyone who has a trade and teach others to master their craft and save MONEY is an enemy of state... MR DAVE I WAS ACCOSTED 1800 for rotors, 4 wheels, with sensors, change of break fluid and breaks, of course it was just a quote.. becuase I watch videos all the time I can do it all myself and cost me nothing but material, that will cost me 3/5 of the prize.. Lady's and gents soak all these videos and learn
Not always ,on higher mile units proper combustion pressure is what keeps the oil down ,no spark or injection activity brings oil in top of the piston ..
Maintenance; My pistons are washed with Lucas gas treatment. Buy it by the gallon, use it at every fill up. A gallon last about a year. At oil changes using Mobil 1, fully synthetic engine oil. I also clean the catalytic converters by adding 2 quarts or half gallon of lacquer thinner into a less than 1/4 tank of ethanol free fuel… A clean engine runs better!
Yeah kind of like when they did weld repairs on camshaft lobes and then never got them heat treated because he doesn’t know shit about industrial mechanic practices, just shop mechanic BS. This guy knows a lot but he also tip toes into areas of machining he has fuck all idea about.
The amount of knowledge in your head blows me away. I just wished I was a good friend. The only real thing I have a passion for is carburetors. But I could sit and listen to you all day. Fan for life
I believe what helps is Dave has a high volume shop tied to a high volume machine shop. When you work on stuff cradle to grave you develop a sense of why things happen. I've been in high volume shops where techs never look at the mechanical side of engine when doing diagnostics. When you are a set of plugs and coil packs into a misfire diagnosis and haven't considered the state of the base engine, you're already in trouble.
Well thankfully I repair single cylinder upto 150 cc petrol engines ... never seen one but good to know ... learn something from you evertime you come ON 😊 thankyou
Definitely a buy once cry once kinda deal. It depends on the vehicle for me though. I've owned some cars that burned lots of oil. Sometimes oil is cheap compared to the alternative
Seen the same thing from the built-in PVC valve on the driver side valve, cover, plugged up and filling up with oil to the point where the vacuum would suck it up and burn the oil Usually gets to cylinders five and seven
Never heard it because it's nonsense. Ring wash is real term but it doesn't mean what he is saying. And that definitely didn't happen from oil leaking past the rings. He's just looking for a reason to upsell more work when the head is off and he has the customer committed to a repair. Read this shops reviews and you'll see how they operate.
Three motors before an old head finally was watching me take a head off a Honda civic and he said that motor needs rings and I was like what you mean how you know that and that's when he told me that. The more you know.
I have to say these videos and your presentation is absolutely top notch. Probably, no definitely the best car repair videos I have ever seen on the Internet. Your knowledge is second to none. Love the channel and I always learn something even if it is not a repair I am looking for information about.
this should be in every engine rebuilding book, so that you CAN learn it from the books. they have freaking spark plug photos in the back of the POS Haynes manuals so that you can use old spark plugs to diagnose an engine. they can put photos of pistons in there too.
Dave, we all know you are a very busy man running a business that has been thriving for decades. Have you ever thought about on your day off doing like a livestream Q&A for like an hour or 2?
@@DavesAutoCenterCenterville, too many people would be interested. There is a guy with a built Dodge Demon that races on the track. His name is "Demonology". His wife would make him breakfast on Sunday morning and he would do the livestream from his kitchen while eating breakfast. It would last around an hour or so. Tons of people would be in the livestream asking questions about his build, parts, upcoming events, how to shift etc. I'm 40 years old, Dave. Wish you were around when RUclips first started in my early 20's. I would probably be an engine builder now.
Im so privileged to get to hear this guy dump years and years of knowledge. Thank you thank you. Also on the 6.7 where you made a different oil tube. You didnt do a test to see how long that oil would take to get to top of engine with frozen cold oil we have lots of 25 degrees days here in ny im sure it would add another 3 seconds
Man, good rebuilders are hard to find. My brother had to replace his motor twice within a month because the first replacement had HUGE issues after a few hundred miles.
Yeah Toyota changed their warranty coverage, so now it's "normal" for their engines to burn 1 quart every 1200 miles. That's a lot of top-off oil between changes.
I had that once on a 466 deere. It actually was burning coolant due to a bad head gasket. I haven't had it because of burning oil I'll be watching closer for that for sure
I did overhaul on tractor engine with wet sleeves, had to pull the head out under 10 hours in and the pistons looked like that. I was dead sure it was from burning coolant but now we know that it was just from the new rings bedding in
Ring wash can happen from to much fuel being injected into the cylinders or by carburetors that are jetted way to fat and rich . You see this on drag car engines at times when they weren't jetted correctly on carbureted engines . Ring wash from fuel gasoline race fuel etc can wash the oil off the cylinder walls and cause ring wear and cylinder wear and scuffing .
Those LT engines burn oil with AFM/DFM and that thin, water 0w20. I deactivated AFM and run 5w30 and no more loss and mileage is better. Truck also shifts better.
They all burn oil these days. All manufacturers are running low tension rings. Hell, Toyota says its normal for their engines to burn 1 quart every 1200 miles. I hear guys screeching like an autistic kid when their LT is burning a quart between oil changes and yelling how they're switching brands because of it. Very stupid.
We call that "blow by". Time to rebore cylinders, and put new rings, rods, and bearings in according to cylinder bore job. Cylinder compression test or horoscope used to confirm. Big job.....gonna need new injectors and spark plugs during rebuild. Clean out carbon build up on valves and exhaust manifold. Heck, might even need new upstream O2 sensors. Clean carbon build up from throttle body. Could be cheaper to go with refurbish engine from jasper.
Blow by is cylinder pressure making it past the rings into the crankcase. This is oil making it past the rings into the chamber. Two totally different scenarios.
I've been a mechanic my entire life even worked in machine shop doing wide range of machine work and all of the balancing and assembly. Never knew that. Thanks!
Fun fact. You know you have ring wash or blow by on the dip stick before having to pull your block. Oil will be all the way up to the top of the stick.
This dude giving away thousands of dollars of education exp for free on youtube. Love this dude.
Exactly he's always got something that I did not know
Thank you Dave you and your sharing of knowledge will be remembered for generations to come
Very kind of you, that means a lot to me.
You gotta hire a security team, Dave. All this information you are putting out here and some shop owners are gonna come looking for you 😅😅😅
😂
Yeah 4 real 😂😂😂. I once had a renault engine that run on 2 instead of 4. I removed the head and let it get pressed tested head was fine. Bottom block was garbage 😂 i wanted ro make sure what part failed 😂
His face became real serious towards the end when he asked the accusatory question, it was so serious that I went ahead and began popping extra bags of popcorn. To eat when reading the sensitive comments of those guilty lol
I can only repair what my customers can afford.
😅
That is a beautiful bit of information to now. Useful for scoping out the heads through the spark plug when inspecting them!
I've been rebuilding heavy equipment engines for almost a decade and I've never known this. Thanks for the lesson!
How about a D343. Tough engine.
@kevinkurtz9889 - I work for a CAT dealer so I've seen a few D343s but they're pretty scarce these days and getting hard to find parts for. The old guys in the shop will tell you, "The D343 put the 'pillar' in Caterpillar."
I mostly build 3306, 3406, 3408, and the bigger C-series engines. They're all pretty solid platforms.
@@eddiehennig7835I'm a trucker and would love a 3406 but I'll have to settle for my series 60 for now lol
@eddiehennig7835 I spent 16 years with a D343 in a 988 Cat loader. I finished in 980 F with 3406. When I retired I took the serial number from the old 88 for a private license number. 87A1689. What a beast.
@@kevinkurtz9889 - That's awesome! You've had a close relationship with that machine to remember the S/N into retirement.
It's refreshing to see someone with so much engine knowledge. I always appreciate someone I can learn something from.
I appreciate that!
The guys about my dad's age , OGs are the ones that have been there done that.
What i hate, is that now i remember my dad explaining and showing me this growing up, and id forgotten all these years until now...
That is great that you remembered your dad's teaching.👏👏
we call that there a brain blast
JJ Jo JU j😊
Sofaking Funny
Dave put a grease fitting back he be missing.
@@DavesAutoCenterCenterville why are his eyebrows so mad?
Finally someone on RUclips that doesn't attempt to be comical & knows what they're talking about!
Every time...until now! Proper training=proper diagnosis. You're the best!
Dave is like working with my Dad, always a lesson and learning.
Thank you again for a great lesson in diagnostics. Your videos are so educational.
You are very welcome
I agree
Blown head gasket does steam clean the cylinder and piston; water and coolant under high temperature and pressure, continuously in that cylinder. Dave, you are providing an important service to many. Long life to you.
You mean it makes your piston rods get groovy, maybe relocate them?
Dave you are the best I have learned w we quite a bit from you and am 61yo I was grew up basically in the shop with my dad my big brother and my uncles they were all motor men gas & diesel and they skipped over some of the information you talked about 👍🏼💯
Speaking as a DIYer, your videos are appreciated for being informative and improving and expanding our knowledge and understanding.
Wow, thank you!
Something worth keeping an eye out for with the borescope 👍
Keep up the great work Dave!
Thanks, will do!
You have taught me so many things about engines... you are like the cool uncle I never had
So i did a bit of looking into this. Ring wash is actually a term used to describe a condition in which excessive fuel gets into the combustion chamber, whegher by a leaking injector or vacuum leak or whatnot, and washes the oil off the cylinder walls, causing excessive wear.
Im not saying your diagnosis isnt accurate, just yohr terminology. Keep up the great work. I went through a picture of a head job i just did, and sure enough, the edges of the piston were clean!
I've seen this zero times because I haven't taken apart an engine yet 😅
Still interesting to know for the future!
You probably won’t have to worry about it. Everything will be electric! Lol
@@tomdipasquale9633they could become hydrogen or hybrids
Don't get your hopes up. Remember what happened with all the other "save the environment" ideas and movements, for many years. @@tomdipasquale9633
It's easy to take apart your engine
The hard part is putting it back together.
@@tomdipasquale9633... not if we all protest/refuse/rebel.... they will let to automated and then you're carless needing a permit to leave town with fees if you're late, etc.... absolute TYRANNY
Dave u r awsome ,bout a million times Dave but that's what I love about working on cars you never stop learning because they never stop changing them,and a lot of folks don't understand that.
So "refreshing" to have someone who can actually tell you exactly what is going on AND speak clearly with the explanation in a way everyone can understand.. can you please run for president??!! 😁
YES
Seconded, let's take it to a vote. 😏
Oh, and the answer is 7. Seven times.
Good info! I like leakdown testing and borescoping before disassembling anything 😅
Would a leak down test have found this?
You are absolutely right !👍🏼 great content.
Thank you 🙌
learned this in 9th grade shop class. Back in the day they actually taught useful things in school.
I see this quite often as a aftermarket warranty inspector where the shop is now asking for a long block, and they had already put a cylinder head on it. I believe this condition gets overlooked quite often, and it’s more prevalent today because of direct injection engine, and the increased amount of crankcase papers that they’re force to recycle.
Vehicle now a days are designed to be more fuel efficient. Thus the rings are looser. Which allows for less friction. But on the downside it will burn more oil verse older engines. Hope that helps.
@@hoktang1that's only true if you don't rigidly stick to the oil change stated. Ask how I know.
@@ivanvarela3215 my buddy did oil changes on his jeep religiously every 2500 miles and it put the rod through the block. Oil changes have nothing to do with this.
@@ivanvarela3215most manufacturers are telling drivers it's okay to burn up to 1qt per 1000 miles (which is crazy) and this is with the recommended oil grade and change interval. They are just trying to get out of warranty work but this tells you a lot about just how loose these engines are built.
What's a "crankcase paper"? Curious minds want to know.
Intersting design in the piston heads.
24 years wrenching and I learned something new
You should figure this out by year 5
Thank you Dave, I’ll make sure to inspect the pistons in the future 👌🏼
I had a ‘06 GMC with a 5.3. LM7 is the code for the engine. I was burning oil so bad on startup I went as far as changing my valve stem seals. Only helped for about 3k miles, then back to a quart every 200 miles. Then I read about the shoddy PCV they put on that truck from the factory, and sure enough I have original valve covers.
Replaced the valve cover and PCV line, hasn’t burned a drop since. It’s a 320,000 mile motor, and somehow oil doesn’t make it past the rings.
I changed the oil 2,000 miles ago and it’s still right on the full mark where I left it… weird.
Edit: lots of Lucas and high quality oil to keep my seals from leaking like crazy. It has the usual drip from the rear main, but that’s all it’s ever been, a very slow drip.
Yep, updated cover has a baffle in it.
Any chance you have the part number on the updated valve covers? Or what year they started using them?
@@aballin4143 my comments are acting crazy right now. It’s 04-06 with the integrated design. it’s got almost 322,000 miles and doesn’t burn or leak a drop of oil. Lots of oil changes and Lucas oil stabilizer have gotten me to this point. I also did an engine flush recently which really helped out the performance of the engine, surprisingly. Got all kinds of sludge out of it 🥲
@@aballin4143 2006 GMC Sierra 1500 - Valve Cover - Driver Side
Manufacturer #RC32040008
videos-for-friends anytime u flush a motor & "all kinds of sludge" comes out when u drain it; it IS recommended that u also drop the pan @ that point and make sure your oil pick-up screen is clean! If it really has that much sludge it'll never all drain out through the hole and the pick-up screen can easily get clogged now...
Every time I did head gasket replacement ,the heads were machined to be tru . But thx for this cause if she was using a ton of oil it would get a full rebuild . It’s the way I’ve always done it . Never a issue after that .
Love watching this guy he knows his stuff. I wish I could rebuild engines like him
He knows how to con people into spending 3x more for something they don't need. We call guys like Dave a snake oil salesmen.
Leak down test.helps a lot
Been rebuilding engines for years! Just when I thought I knew everything ya proved me wrong!, thanks. You’re a wealth of information
Thanks - we learn something every day👍
I have seen where the head gasket blew and was leaking antifreeze engine coolant into the combustion chamber and literally made the top of the piston look like it was brand new. It was clean as a button.
That'd be clean as a pin. A button is cute.
It's literally steam wash the piston
Again Dave showing his expertise and honesty, I love his videos and the info he puts out.
I highly recommend any shop owner, mechanic or machine shop owner watch Dave's videos.
I'm a pretty good mechanic but I always learn something new from Dave.
Your shop is like a medical team specialized in cardio surgery..
Nice I hardly learn anything new these days but Dave is here to drop some knowledge bombs 💣
That is very nice to know i never looked at it in that way. I think the ring wash goes back to changing your oil at factory recommend milage. Like you said before cut the milage recommendation in half and ring wash may not happen
I love the access to info now a days
Im damn near a master tech and didn't know this! You sir have earned another subscriber!
Appreciate the sub!
I'm willing to bet this starts to happen because of dirty oil / non frequent oil and filter changes.
Built lots of junkyard motors and it was very rare to find one with a good short block. So rare that I never considered selling one . My reputation wasnt worth the few bucks to fix the accidental factory assembly.
Literally 4 days ago I put a new headgasket on a engine that is back in the car now. I had top end problems and did all the valves and was contemplating doing the bottom end since it was out but didn't know if it needed it... wish I saw this 5 days ago.
Thanks for the video all the same Dave! Now I know!
What’s the bottom end?
@HighPriest1776
The engine has many parts but they can be considered in two different areas, the top and bottom end.
Typically anything above the headgasket (valves, lifters, pushrods, camshaft, head, etc) is considered top end and anything below the head gasket is considered bottom end (pistons, crankshaft, oil pump, connecting rods, etc)
The fun part is actually getting to the engine. So much emissions and computer crap and wires its amazing anybody can pull a engine without screwing something up.
We had new heads put on our 150k mile 454 in our farm truck. This is what the bottom end looks like and it needs a quart of oil every tank or so. No leaks, just burning.
I am glad someone said it, Thank You Mr Dave...for the work that you do I and others, appreciate it beyond words, because I told myself this, and this the second time I say it and know to the world.. anyone who has a trade and teach others to master their craft and save MONEY is an enemy of state... MR DAVE I WAS ACCOSTED 1800 for rotors, 4 wheels, with sensors, change of break fluid and breaks, of course it was just a quote.. becuase I watch videos all the time I can do it all myself and cost me nothing but material, that will cost me 3/5 of the prize.. Lady's and gents soak all these videos and learn
Good to hear from you! You are someone who deserves all the credit because you choose to learn. Well done.
I learned of ringwash in high school auto shop. Circa 1976
Idiot Biden and Democrats made shop class / welding class, hunter safety shooting class, automotive classes illegal.
Oldschool knowledge is the best knowledge because there were minimal electronics
Not always ,on higher mile units proper combustion pressure is what keeps the oil down ,no spark or injection activity brings oil in top of the piston ..
We used to use foulers on cylinders that were burning oil.
Same here... I also learned the difference between an "engine" and a "motor"...
Maintenance;
My pistons are washed with Lucas gas treatment. Buy it by the gallon, use it at every fill up. A gallon last about a year.
At oil changes using Mobil 1, fully synthetic engine oil. I also clean the catalytic converters by adding 2 quarts or half gallon of lacquer thinner into a less than 1/4 tank of ethanol free fuel…
A clean engine runs better!
I'm not even a mechanic I just love watching this guy school everyone that thinks they are mechanical.
He's not a mechanic. He's a technician. Probably a master tech for at least one of the big manufacturers
Yeah kind of like when they did weld repairs on camshaft lobes and then never got them heat treated because he doesn’t know shit about industrial mechanic practices, just shop mechanic BS. This guy knows a lot but he also tip toes into areas of machining he has fuck all idea about.
Long 30 years. I appreciate your insight and wisdom thanks
Been rebuilding for 20 years and didnt know this. Great stuff man.
The amount of knowledge in your head blows me away. I just wished I was a good friend. The only real thing I have a passion for is carburetors. But I could sit and listen to you all day. Fan for life
You are the most knowledgeable mechanic that speaks clearly, unlike one crazy yt channel lol, but your channel is the best, ty!
Wow, thanks!
I believe what helps is Dave has a high volume shop tied to a high volume machine shop. When you work on stuff cradle to grave you develop a sense of why things happen. I've been in high volume shops where techs never look at the mechanical side of engine when doing diagnostics. When you are a set of plugs and coil packs into a misfire diagnosis and haven't considered the state of the base engine, you're already in trouble.
Well thankfully I repair single cylinder upto 150 cc petrol engines ... never seen one but good to know ... learn something from you evertime you come ON 😊 thankyou
Great 👍
Great information, If I tear a engine down that far if it's mine it's going to be a complete rebuild. I'm not taking the engine out anymore.
Definitely a buy once cry once kinda deal.
It depends on the vehicle for me though. I've owned some cars that burned lots of oil. Sometimes oil is cheap compared to the alternative
Same here
You are an absolute genius. Love your videos
Glad you like them!
"Talking to an experienced man is worth more than reading a library !" Tibetian proverb 👍🏼👍🏼
Seen the same thing from the built-in PVC valve on the driver side valve, cover, plugged up and filling up with oil to the point where the vacuum would suck it up and burn the oil Usually gets to cylinders five and seven
I’ve worked in auto repair 30 years, at regular shops, machine shops, and race shops, never heard of that. I love new info.
Never heard it because it's nonsense. Ring wash is real term but it doesn't mean what he is saying. And that definitely didn't happen from oil leaking past the rings. He's just looking for a reason to upsell more work when the head is off and he has the customer committed to a repair. Read this shops reviews and you'll see how they operate.
I grew up around engines all through my childhood. I just learned something 👍💥
Right on
very common in modern engines that come standard with loose piston rings to boost economy (with added unreliability)
I know absolutely nothing I mean nothing about motors but I really enjoy your videos and how you explain things well and very professionally
We love having you on our channel!
Dave is one very wise, & highly experienced man. I love your videos brotha!
I appreciate that!
Watching this guy is slowly making a out of mechanic. Most if his knowledge isn't in the books. The experience he has is insane. 🤯
Appreciate your watching!
Dave your knowledge is up there with the Car Wizard spot on ole skool brilliance a collaboration video would be awesome
Yes, and I have put heads on. It requires communication with a customer. Sometimes it’s all they can do and they need the car to run.
Point well taken, thanks for the feedback
I've seen it a few times as a backyard mechanic, which my assumption was fuel additives causing it
Three motors before an old head finally was watching me take a head off a Honda civic and he said that motor needs rings and I was like what you mean how you know that and that's when he told me that. The more you know.
I have to say these videos and your presentation is absolutely top notch. Probably, no definitely the best car repair videos I have ever seen on the Internet. Your knowledge is second to none. Love the channel and I always learn something even if it is not a repair I am looking for information about.
This is something you don't learn from books.
Thats why i read car magazines. But they are too expensive and hard to find
It seems like something one should learn from a book.
Dude, books have this and thensome.
Yes, you DO learn this from books. Hell, this guy probably learned it in a book.
this should be in every engine rebuilding book, so that you CAN learn it from the books. they have freaking spark plug photos in the back of the POS Haynes manuals so that you can use old spark plugs to diagnose an engine. they can put photos of pistons in there too.
Fascinating. Good to know, thanks Dave!
You bet!
If somebody is working on cars, it doesn't want to spend the money.
I have such a great time, learning from you Dave. Thank you to you and your team.
Dave, we all know you are a very busy man running a business that has been thriving for decades. Have you ever thought about on your day off doing like a livestream Q&A for like an hour or 2?
Thanks for the feedback! Sounds like a great idea if enough people are interested👍
@@DavesAutoCenterCenterville, too many people would be interested. There is a guy with a built Dodge Demon that races on the track. His name is "Demonology". His wife would make him breakfast on Sunday morning and he would do the livestream from his kitchen while eating breakfast. It would last around an hour or so. Tons of people would be in the livestream asking questions about his build, parts, upcoming events, how to shift etc. I'm 40 years old, Dave. Wish you were around when RUclips first started in my early 20's. I would probably be an engine builder now.
Im so privileged to get to hear this guy dump years and years of knowledge. Thank you thank you. Also on the 6.7 where you made a different oil tube. You didnt do a test to see how long that oil would take to get to top of engine with frozen cold oil we have lots of 25 degrees days here in ny im sure it would add another 3 seconds
Saw this on every Subaru I pulled apart for leaking head gaskets lol. External oil leaks for head gaskets.
Low tension Rings lack of maintenance
Man, good rebuilders are hard to find. My brother had to replace his motor twice within a month because the first replacement had HUGE issues after a few hundred miles.
Nowadays with 0w oil and low resistance rings it within manufacturing specs to burn oil.
It's always been within manufacturer specs to burn oil, it's a byproduct of how an engine works.
Yeah Toyota changed their warranty coverage, so now it's "normal" for their engines to burn 1 quart every 1200 miles. That's a lot of top-off oil between changes.
I had that once on a 466 deere. It actually was burning coolant due to a bad head gasket. I haven't had it because of burning oil I'll be watching closer for that for sure
I did overhaul on tractor engine with wet sleeves, had to pull the head out under 10 hours in and the pistons looked like that.
I was dead sure it was from burning coolant but now we know that it was just from the new rings bedding in
Ring wash can happen from to much fuel being injected into the cylinders or by carburetors that are jetted way to fat and rich . You see this on drag car engines at times when they weren't jetted correctly on carbureted engines . Ring wash from fuel gasoline race fuel etc can wash the oil off the cylinder walls and cause ring wear and cylinder wear and scuffing .
You guys are extremely informative. I learn new things watching you all the time. Thanks
Those LT engines burn oil with AFM/DFM and that thin, water 0w20. I deactivated AFM and run 5w30 and no more loss and mileage is better. Truck also shifts better.
They all burn oil these days. All manufacturers are running low tension rings. Hell, Toyota says its normal for their engines to burn 1 quart every 1200 miles. I hear guys screeching like an autistic kid when their LT is burning a quart between oil changes and yelling how they're switching brands because of it. Very stupid.
Every so often the stars align and and some wonderful, valuable information gets passed along like this.
Thanks!
We call that "blow by".
Time to rebore cylinders, and put new rings, rods, and bearings in according to cylinder bore job. Cylinder compression test or horoscope used to confirm. Big job.....gonna need new injectors and spark plugs during rebuild. Clean out carbon build up on valves and exhaust manifold. Heck, might even need new upstream O2 sensors. Clean carbon build up from throttle body. Could be cheaper to go with refurbish engine from jasper.
Blow by is cylinder pressure making it past the rings into the crankcase. This is oil making it past the rings into the chamber. Two totally different scenarios.
that depends on a lot. sometimes it really is just rings, and you can always hone a cylinder before deciding whether you need to re-bore it.
That is not what blowby is lol
@@5uprnva gonna review that
@@QuincyStickblowing oil past the rings into the combustion chamber. Rings are allowing oil from crankcase into combustion chamber. 😮
This is so simple but so educational. Thank you
Glad it was helpful!
Finley, an explanation of ring wash. I learnd this 50 years ago by my dad.
That is why they smoke after doing a valve job
The amount of knowledge Dave shares is awesome! Love all the info and I’m not even a mechanic. Just really like engines
Great to know theres a great machine shop thats local. Keep up the great work and thanks for sharing this information
Our pleasure!
You and barry are gonna help produce the next greatest generation of automotive technicians!
Thank you! That is part of our mission
@@DavesAutoCenterCenterville how many years of experience and what licenses do you all require for someone to work at your shop?
Awesome info. I'm grateful for your continuing this type of knowledge. I wish such awareness of how things work was still as common.
Sir, I definitely did not know that. You are sharing pure gems! Thank you!
You also get wash from fuel, be it a weak or inconsistent spark causing fuel loading or from having a rich fuel-air ratio.
That... is very helpful to know! Thanks!
Learning is endless in mechanics 🙏🏽🙏🏽🙏🏽🙏🏽🙏🏽🙏🏽
I've been a mechanic my entire life even worked in machine shop doing wide range of machine work and all of the balancing and assembly. Never knew that. Thanks!
You sir are very informative. Have taught me things that I thought couldn't be taught. Hats off to you sir
Thank you so much Dave your videos are so helpful every time I’m bored I scroll through your videos and I just learn
Good for you! Using your free time to learn. That's great. I do the same thing.👍
Great information Dave! I needed that.
Glad to hear it!
20 years and damn that’s mind blowing
It is amazing how much I have learned from watching RUclips videos like these.
Man i didn't ever think anything of this. Neat info! Thanks!
Glad to help!
Fun fact. You know you have ring wash or blow by on the dip stick before having to pull your block.
Oil will be all the way up to the top of the stick.