Toyota 3VZ engine: An Overheat Disaster
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- Опубликовано: 2 янв 2023
- Here's a full teardown of the Toyota 3VZ engine to see what's inside and how it works!
The Toyota 3VZ engine is a 3.0L single overhead cam engine with an iron block and aluminum heads. The 3VZ-E engine used in this video is from a 2nd generation Toyota 4Runner, but was also found in Toyota's Tacoma pickups. It barely made 150HP and 180ft-lb of torque and was underpowered for typical 4Runner off road duty.
The 3VZ engine was associated with headgasket failure due to its design.
Once the headgasket failed, coolant and oil would mix and engine could overheat. If prolonged, the coolant-oil mixture would reach critical lubrication components such as the cam and crank bearings and cause them to wear out excessively, as seen in this video. Furthermore, the mixture could clog water passages forming sludge.
The engine in this video was out of a 1995 Toyota 4Runner. Usually, when the headgasket is replaced and cylinder head checked for flatness, the issue should not arise. The engine is also limited in capability due to its two valve per cylinder design, since it cannot breath or exhaust enough air to make power.
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Let's just take a moment to appreciate the fact that Speedkar is doing an engine teardown for us...outside...in the middle of winter...in Canada. He must love us or something, lol
Thanks. I enjoy what I do. If I'm not outside working on something I'll get bored or fall sick.
He's used too many of his wife's t-shirts, so the dining room is off limits during the winter.
@@Mtechthewise I think at this point he's used so many of his wife's garments that SHE'S off limits for the winter 🤣
I am glad he didn’t Timelapse it with headache music lol
"it's like Toyota sourced the head gaskets out of a Subaru factory or something"
Damn dude, savage 🤣
Haha you caught that one, nice 😂
That had me cracking up too lmaooo
I wish more people could edit their videos as well as you do. I sense the unbolting edits take alot of work and it is appreciated.
This is the cool aspect of those videos in deed.
Thanks, glad you like the style. It's tedious, having to record and then crop each segment of a second, but satisfying to watch when done 😃
@@speedkar99 One thing you should show more is the wear on the rod bearings, we didn't see those for very long.
I have this same motor in my 88, blew a head gasket right at 32 years on a back trail in Death Valley. I was still able to get home!
Wow
Mine went at 34 years old. I drove it with a blown gasket for another year before I got a 3.4 swap.
You do a great job of explaining operation of various engines.
Video editing is exceptional, plus a little comedy thrown in.
Glad you like them both
This is the first engine I ever took apart. Was my 1989 (built in 88) 4runner. Was a very reliable engine to me, overheated it several times pulling way to big trailers with it, changed the oil and forgot the cap drove with little to no oil, it took all the abuse. Never blew a head gasket but I did remove the heads cause I hydro locked it off-roading once. Put it back together and drove it another 80k miles until a drunk dude pulled out and hit me. Wish I had never got rid of it. The red interior was immaculate🥲
Your last comment about the head gasket was epic lol! You tell it like it is and we Love it!
Haha glad you caught that
My bet the thing that killed that engine was just neglecting oil changes, leading to the sludge. Then that also meant the early signs of the head failure went unnoticed, till they were gone.
Yeah I bet this engine was overheated without consent
Neglect is the only.thing that this engine can't handle
My 1985 Honda Accord Hatchback was totaled in an accident 2 weeks fresh out of college and my first full-time job back in 1993. Insurance settled from the guy at fault and I bought a brand-new 1993 Toyota 4x4 pickup. I couldn't afford the V6 with 3VZ engine so settled with the 4 cyl 22R-E engine which I'm glad I did. So easy to work on.
Yep the 4 banger is a better choice in these
Would love to see you do a 3.0 to a 3.4 swap video. This was pretty educational.
Thank you for this tear down effort. Something to be said, Remember this engine has fewer moving parts of potential failure than a 3.4 (4 valves per Cyl) or newer motors. This motor is a victim of Head gasket failure AND fluid/lubricant neglect. This motor works best with a manual transmission. And this is a non-interference engine.
My 95 4runner blew headgasket at 189,000 & 9 years old. Toyoto told me I missed a recall by 8 months but Service Manager made a couple calls as they done 100% of service work since I bought new. They replaced the complete top end in less than a week & handed me the receipt for $4700 in parts & labor showing Toyota covered 100% of cost. & you better believe I bought my next Toyota from them also.
That's awesome!! 189K miles in 9 years is alot though, how did it hold up after that ?
@@speedkar99 We traded it in on a new one in 2008 & it had 231,000 & still ran perfect.
I am rebuilding a 1995 GM 3100 V6, rated 160HP, pushrod engine. With the OHC setup, I thought they'd do better than 150 HP, kind of surprising. But when I saw the thumbnail, I thought...hmmm, looks like my 60° V6 block I'm working on right now, but it says Toyota. Thanks for the fun, informative video.
I was a Toyota truck fanatic back in the day, and given the choice between the engine you did here and the 22re, I'd take the 4 banger every day. The v6 made a marginal bit more power, but pretty insignificant at most of your lower rpm you usually do truck stuff at, and it had to actually run regularly to make power, which they frequently didnt.
Exactly. And to add to that the r banger was easier to work on in the engine bay
3vze. All the power of the 22RE minus the gas mileage and reliability.
@@GoonDick Well said.
Thanks for the videos man, You are like a more informative person than "I do cars". I've learned a lot watching your videos
Thanks. I watch his channel too, he does good work, I prefer to explain how things work.
@@speedkar99 And I like the way you point out the more common failures, and why they are failure prone.
9:52 - "I guess the cold is taking its toll on the battery"
I got that one. Nice
My impact couldn't take off any of those bolts
Missed your streams and Happy New Year to you and yours..
Take care
My 92 Lexus ES300 came with 3vzfe engine, very torquey and reliable. Never over heated and never blew headgasket so far. Oh and shes 5 speed manual
Absolutely beautiful editing!! Keep it up!
Glad you like it. Sure takes some tedious effort
@@speedkar99
It sure looks like it does. I’m appreciative of it, and I’m sure others are also.
Thanks!
That Subaru dig at the end 🤣
Digging like a Subaru's pistons dig the block. 🤣
Glad you caught that joke hahaha
@@fun_ghoul Or rather how the wrist pins dig the block 🙂
Another terrific video. Thank you!
You are welcome
I believe the little thing under the distributor rotor is the pickup coil for the ignition module / igniter, it acts like a camshaft position sensor.
Hall effect module, sends the 12v reference back to the coil to collapse the field
Thanks l like how You explain and how You work very close to the camera You help me a lot with My 4 runner 👍👍👍👍
Great video, haven't seen a distributor on an engine for a long time
Me too!
simply amazing all around! thnk you.
I bought new 1989 and 1993 Toyota trucks with this engine. It was such a dog. I FAR preferred the 22RE in my other Toyotas. Frankly, although mostly reliable, Toyota can't hold a candle to Honda engines, although I have grudging respect for the 4.0L in my current 4Runner & 05 Tacoma.
Thanks for ripping these down to see what makes them tick (and stop ticking!).
ME rebuilding a 3vze that sat since 2014 with blown head gasket, it was already rebuilt before and it the same with the coolant instead of the Toyota red or pink previous owner use cheap green. planning to do Arp headstuds on this
Well mine sat a long time but I had Toy red in it. Best you drain and put 65% Genuine Toy Red and the 35% distilled until you get ready to rebuild...the builder said mine was rusty. I had blown head gasket. Some coolant got in the oil...
I like you videos showing all the engine parts and workings but what do you do with all those pulled down engines. I assume they end up sorted scrap metals for recycling.
All 89 to 95 3.0 had bad head gaskets..but they are one tough engine..mine has 212.000 miles and still going..After I replaced the gaskets and rebuilt the heads
Thanks Speedkar 👍🏻
Wow, 2 valves per cylinder, no VVT, an *actual* distributor, a mechanically operated fan and a cast iron block. But I didn't notice a vacuum or centrifugal advance on the distributor body?
I also thought it was funny you said you were surprised the oil cooler wasn't part of the filter assembly. I just rebuilt my cooler yesterday. And i was laughing my ass off realizing they just used another oil filter in the block. They are actually interchangeable. My 4x4 for example has the filter in the front and cooler in rear. 2wd is opposite. Honestly i like this engine for its simplicity as a 6
Hi. When the BMW 320d or 320ied driving , (Zf8hp45) all of them that I drive makes a hard movement to the front, the car shifts down from 3 to 2 while I am slowing down, and if I pump up just on the shifting or just little bit after the shifting it makes a hard movement to the front, the engine speed highs up and then its shifts to 3 again. İts actually normal. But I think its disturbes the comfort of the drive. Did you explained this position at the end of your video while you explain the line pressure (you said “mash the gas”. Thanks.
What size socket were those crankshaft craddle bolts I know theyre 12 point but what size exactly?
Please do a 5VZ teardown!!
Only 28 years old and it has already failed!
but look at the oil is never(or very little) been chanced.
Neglect can accelerate failure
@@speedkar99 28 years of neglect can be fatal to an engine. 😉
Thank you
Welcome
This engine is how I learned. Toyota recalled it, then extended it. The composite head gasket is a possible solution to the dissimilar metals (iron block and aluminum head) heating and cooling at different rates. This engine, 4g63, Ford 3.8 V6....
Yep
@@Imalrightnot The replacements never failed. This engine isn't ingesting 12 lbs of boost, but that would certainly be better. It is kind of common on non-performance engines these days.
MLS head gaskets are necessary, along with toyota long life coolant properly mixed by the owner. Do not trust a garage mechanic to do coolant fluids, do it yourself.
@@tonyisme4934 Yeah, go with appeal to authority. Rather than experience with the V06 campaign. Although I don't recommend DIY to people that ask.
I had a 1990 4-Runner with a slightly different V-6. It blew a head gasket to the rear of the left rear cylinder.....near where the exhaust crosses over on the left rear of block...so I assumed there's extra heat at that corner of the engine. Caused a small divot/cavity in the top of the block next to that cylinder. Had to have that cavity welded closed, done with the pistons still in there. Then for milling the decks of block they required everything out down to a bare block.
Yeah I mentioned the exhaust crossover flaw near the end of the video. Your right, you will have to get everything off to mill down the heads or block
great video! a new competitor to "I do cars" for engine tear-downs. Actually (just checked) you are a bigger RUclipsr
Yeah,I've seen that channel too. Boring. There's also this channel called watch Wes work, also uninteresting.
I watch his teardowns too. He does great work but a little too slow pace for me haha
Another great engine tear down. Thank you
Glad you like it
Do the 3VZFE which came in the V6 camry of early 90s and lexus ES300 early 2nd gen. They share some parts with this 3vz but are much different in setup
Almost have 250 thousand on mine. Most likely gonna do a 3.4 swap when the hg blows
Another great video! The battery insinuation (hmm Tesla), the engine off the stand NO the stand off the engine and the Subaru factory joke.
Any chance you can do Skyactiv G video, there must some in the junkyards in the Great White North?
Yes there's a few skyactiv engines out there but I don't want to pay $800+ for a blown one nor do I want the struggle of removing one in the junkyard haha
@@speedkar99 $800 for a blown engine is insane, tell the junkyard it's for education purposes.
Good day Speedkar99. Boy I seen your wife crying when u threw her t shirt. lol
Anyways interesting video. So did he not change oil often enough also?
So u should never add green antifreeze to red ? Thanks for
Happy New Yr to you & yours.
The failure here is a mixture of coolant, lack of fluid changes and flawed head gasket design.
I love this channel
🙌
😍
Thanks
Making there oil changes when they need it and checking there oil often and water (coolant) these motors are great
Notification Squad!🔥🔥🔥 Happy New Year!🎉🎉🎉🎉
Thanks for being first !
On the 3 core brass original radiators, they can develop a small crack at the base of the filler cap. Not taking care of this hard to find leak, can help rust form inside the cooling chambers over time, even with using Toyota Red Long Life properly mixed. I saw this problem on mine. Mine did barely leak and i thought it was a radiator cap. It never leaked like dripping on the ground. It was finally re-soldered. The design of the 3.0 is late 1980's and these motors need adequate zddp in the oil, which has solely been reduced in off the shelf oils. So researching the oil type along with climate temperature is necessary, due to the bucket shims under the cam and one need to properly mix distilled water with genuine Toyota Red Long Life. Can't leave this step up to a shop/garage. Must be DIY. Its nice these are a not-interference engine, and work better with a manual transmission vs an automatic. Denso & OEM parts are necessary as replacements. Especially plug wires. I am currently using 10W 40 conventional with elevated zddp levels and at least 89 octane gas.These vehicles like 31" tires (per the door jam label) an going bigger is not suggested.
Why not use synthetic oil? I’ve been using that since a rebuild and heard switching will cause problems.
I had one of these engines in a 93 4runner. Crap on fuel. Crap on power. Leaked a fair bit of oil from the valve covers.
But... it bounced off the rev limiter for many hours of many days and never let me down. Had to turn at 4200 rpm to maintain hwy speeds with the big tires n gears... but it never let me down.
Sounds like I got lucky with the headgasket. I have mixed feelings about that engine, but I much prefer the new 2GR-FKS in the newer tacos. Or the 5VZ 3.4L. That one was crap on fuel but at least made some power.
Yeah I hear alot of people are swapping in the 3.4 into these older 4 runners. The 2GR is way more modern and no comparison haha
I’ve always liked Toyota’s 4.0 V6.
I have the Australian made model of this engine. I wonder if they fixed these issues or perhaps sourced material elsewhere. I have it in my almost 30 year old Camry (granted it has 165k miles or 265k km on the clock) but mostly vehicles with this engine are either on the road or still sold by the wreckers after the car has been junked.
5:31 Hope you were wearing the safety-toe sandals instead of the open toe sandals before switching to the winter boots. Stay warm!
I reserve the slippers to take the garbage out. For this, I wear boots
When I did my head gasket I took a burr bit and opened up the back of the manifold on number 6 where the exaust pipes come together
Did it help?
@@speedkar99 yess
That new shirt was just too nice
It was. But she doesn't wear it anymore so why not
You can clearly see that this guy knows what he is talking about!
Lol, custom stud removal tool. Was surprised you didn't get a custom gear removal tool to get at that oil pump later.
Not worth it. A crank is so thick to grind thru
SK99: _"...only two valves per cylinder..."_
Ford:
Yep. They're still using ancient technology
@@speedkar99 It's not "still", tho. They had "Modular" SOHC and DOHC V8s in Mustangs, cop cars and trucks for 30 years. I guess too many warranty claims and not enough profit margin made them design a new pushrod engine to keep up with GM, which never lost money switching to "new" technology for no perceptible gain.
Also, the cammers are huge, which makes packaging more difficult. Finally, valve shroud is less of an issue if you have a relatively large bore (>95mm).
Are youable to easily source a 3VZ-FE? It's the DOHC version and apparently shares very little with this particular engine. I've got a complete 435,000km example you can have. Only problem is freight from Oz haha.
If it's old and was sold in Canada, it's easily sourced. Cars return to the earth quick enough when driven on salty Ontario roads...
Nah these cars are way to old to find in a junkyard. Rusted cars get scrapped pretty fast here.
*Laughs in 22RE* Might be slower than a 3.slow, but you can get home on a quart of used diesel oil and a boot lace for a fanbelt with no loss of power.
Was the NSX the first car with variable valve timing?
With VTEC style yes
can you make a video about redblock volvo engine
Ahhh, the b230, indestructible.
Wow. Where would I find an engine that old...
"...(Toyota) got these head gaskets out of a Subaru factory..." 🤣
Haha
What is the best coolant to use for these 3vze motors? Just factory Toyota coolant?
Yes. It's an iron block so very sensitive to coolant mixture since it can rust
Nothing but that Toyota brand from the dealer, mixed 60% coolant, and 60% distilled. DO NOT TRUST a shop to do this. Do it yourself, by pre-mixing in a clear jug.
@@tonyisme4934 Okay, sounds good. I just bought the OE Toyota coolant
This is why the 5vz swap became a thing. Superior engine. I still can't believe the idler pulley water jacket. What were they thinking!
Do you sell any parts from the 3VZE ?
No
Loving the Canada shirt used to sop up filth, ngl. 👍
Gotta use what I find. She doesn't use that shitt anymore and probably won't now!
Not using Toyota Red long-life at 60% coolant 40% Distilled water was a contributor to this failure, and probably oil changes not done timely. My 3VZE had cam wear , likely due to off shelf oils with insufficient zinc/moly. Using higher zinc oils now...
8:37 Great vid. So I’ve been reading mixed reviews on what to use for coolant on these motors. From factory they came with green but now people recommend red. Is it the red coolant that caused it to fail or was it the mixing of coolants?
My manual says Red Toyota Long Life. At least 60% coolant , 40% Distlled. I pre-measure in a container ahead of time...
did this engine sit outside for 20 years?
With me it probably sat 7 months
Not sure about the previous owner
That was not one of Toyota's better designs; however they learned a lot from it and the newer ones were much superior. Kind of the reverse of what the Americans and Germans do
Yeah it's kinda low point in Toyota's engines. Especially in the 80-90s when build quality was top notch
I have the same engine (1994 Toyota pickup V6 3.0/3VZE), and I'm getting a code 24 and code 31...rough idle, rich running, hesitation sometimes when i press on the gas pedal, check engine light on, and occasional backfire when first starting (cold). The truck came with an EGR delete set up, as well as a cold air intake simplification mod when I bought it. If you (or anyone) could offer some guidance, I am by myself and really need help. Thanks!
A bad Denso water temp sensor can cause this, I was getting 13mpg and running rich. AFTER checking all areas for vaccum leaks including throttle body. Bad temp sensor tricks the engine computer to think the engine is cold all the time. My sensor was 34 years old. It had never been changed. I had the vehicle 31 years. I used an exact 89422-20010 Denso Japan replacement and a 19mm crow foot fuel line socket by E-cowlboy to get it out, after using CRC Freeze-out to get it real cold. Then it came out without breaking off and using a 3/8th S&H long ratchet.
Pink vs green coolant? Sometimes I'm not sure if you're kidding or not. 🤣😂
Say what you will about the faults of this engine but I've owned a 95 Runner that ran for over 550k till trans gave up the ghost. And a 04 Tacoma that had 475k before I sold it. Toyota makes the best plastic money can buy...
Nice! Any issues with the headgasket or overheating?
@@speedkar99 I didn't have any issues with the engine on either. Just replaced timing belt every 100k miles & routine maintenance. I've had good luck with the 3.4. I bought a Tundra with a supercharged 5.7 so I doubt I'm gonna have the same luck. I enjoy your "quick to the point" style in your videos. Keep it up man.
I'm 306K on a shop rebuilt 3VZE. 5sp manual. No cat. Decent power.... using conventional 10w40 elevated zinc oil and Red Toy long Life coolant
I didunt see the differential he sed was under the sumpé covér,
whéré it Wás ¿¿¿¿¿
So how did the newer head gasket design differ and solve the problem?
Yes
@@speedkar99 :-)
When you releasing merch?
Na
So nice of your family members to donate their clothing.
Donate? More like steal ..
@@speedkar99 reallocation of resources 😁
It overheated because they used second hand head gaskets without the coolant sleeve ports to match.
is the engine an interference type?
Nah
Okay ive never seen a 3vz-e before. Ive only ever seen the 3vz-fe which were east-west and made for camrys. Completely different to this one
Yeah they're the same engine family but a few things changed for the longitudinal mounted
Mine has 272k currently and just rebuilt oil cooler. I bought it from a real estate company that took good care of it tho. Its obviously beat up because its a work truck. And it doesn't run perfect at idle. But gotdamn if that thing wont handle the daily abuse... Trying to keep up with modern traffic 😂 seriously i baby this thing because i have to beat on it to get anywhere
Guessing the PO wasn't keen on preventative maintenance
In addition to the flaws in Engine design
Why the toothbrush?
It's part of the "schtick"....a mannerism that identifies the channel.
Oh...it also makes a good pointer....
Prop comic
It’s his brother’s….LOL
It's my teach-brush
Green instead of pink= dead engine!
Yes. Toyota uses red or pink.
haha love the toothbrush....lol nice job on the vid. Very watchable....
I sold my black 95 4Runner like 6-8 months to some Hispanic guy. the motor did overheat at one point and eventually just died in the parking lot at work a couple weeks after the overheat. Took it to the mechanic n said the head gasket blew. So I sold it to that guy n he got it running I guess but never registered the car in his name and the 4Runner was impounded because it was found on the side of the road abounded. Guessing it broke down on whoever. Makes me wonder if this the motor, highly doubt it. Im in Ca
Funny all those new shirts 🤣
I don't know, she doesn't use them anymore
@@speedkar99 Yeah, might as well use them for your videos then 🙂
VVT? it can be not closed vaves
Watch your toes! I cringe every time you drop a piece of engine equipment. Composite toe shoes, I highly recommend. Great vid!
I have regular hiking boots on, better than slippers I used to wear in summer
How much would you charge for me to send you this engine and rebuilt for me
I don't fix. I break
"Turn those BIG 13" wheels better" LMAO
I purposely left that during editing haha. I think I meant to say 33 inch wheels
- does the women complain about usage of her clothes
- your stud remover tool is the piece of equipment about whom is not asked octroi
- all in all super nice edited
What she doesn't know won't hurt her.
I love my stud removal tool to take things apart! Best tool ever.
Glad you like the editing. It's tedious lol
Stupid question alert: What's the deal with the pistons not being round?
I find it highly hilarious they used plastic for the cooling stuff, but had a steel oil pan. Like they were afraid the ground would take out their bullet proof engine design. Lol...
I agree! I'm not sure why the headgaskets aren't round but the pistons sure are.
And yes why plastic... On an older engine you'd expect metal everything! Interesting design
@@speedkar99 Oh, the pistons are actually round? They looked whatever shaped to that gasket like there was a bulge on one side. Lol
ah yes.. the 3.slow.. which eventually becomes the 3.blow. gutless wonder that will blow its head gasket. the 5vz was an amazing leap forward and a welcomed replacement for what may possibly be the worst engine toyota made. meanwhile the 3vz-fe from the 92-94 camry or es300 is a bullet proof DOHC beast like the 5vz.. what were they thinking with the truck motors?
2:21 🤣🤣🤣
🫡
I had one of these take a total shit on me when I was a kid in 2004 in a 1995 4runner
maybe it got hidrolocked and the piston bose is bent
I didn't notice any bent piston
This is different to 3vzfe engine
Does the 5vzfe also have shitty head gasket s?
Yeah but not as bad
Kinda odd that they used plastic covers. Who the hell was the engineer for these engines? Lol.