This Generator Backfires & Won't Start - Let's Fix It!
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- Опубликовано: 6 сен 2024
- This Generator Backfires & Won't Start - Let's Fix It!
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Dude, you rock. I’ve been waking my neighbors every other day trying to start my generator hoping for it to fix itself. This was a very simple fix thanks.
Thanks, good to know. Buying the same generator tomorrow.
So many people are concerned about finding TDC. Your way is my way too. Always works!
Yet another clear, concise video with excellent image quality. In a mere 13 minutes you took the mystery out of valve adjustments on this style of engine.
Just wanted to thank you for helping me gain the confidence to work on my own engines and equipment. Been subscribed for a while, and have always enjoyed your content. Best of luck!
Thanks buddy, I really appreciate your support!
Well done donny
Great troubleshooting to find the valve gaps are suspect because the pull start indicates no compression. All these tips help us build our troubleshooting arsenal. I was thinking a carb issue at first. Thanks, Don. Another great one!
Great demonstration on valve lash symptoms, Dony! I have also seen issues where the intake valve is too loose and makes the engine very hard to start and run too lean. That looks like it had almost no hours on it, hard to believe that it was so far out of spec that it wouldn’t even run already!
it had just over 100hrs
Excellent video! Loved the way you adjusted the valves without worrying about TDC . Your way is by far the easiest. Had a generator that would sputter, miss and was sometimes cantankerous to start. Oil level was good. Come to find out ( After making multiple checks ) it had a defective low oil sensor. Simply unhooked it and it ran fine. Unfortunately it was an older unit and the sensor was no longer available. Customer said that's the Best it has run in years . I reminded him to check the oil level daily or 8 hrs to avoid burning the unit up. Once again great job! 👍👍
Thank you, great information. A lot of difference in the valves with a simple adjustment. Take care.
This saved my life and my family thank you
Great help guy - thanks - have a Princess Auto 420 wood chipper that started waking the dead with backfires in cold weather - this is the fix !
Hi Donny. Greetings from the state of North Carolina in the United States. There is a store here called Northern Tool & Equipment. I don’t know if you guys have those in Canada. They carry this same exact series of generators. They look just like the one you worked on except they are blue, and they are called Powerhorse. Like you, I know most of these come from China but they seem like decent little motors for the most part. I actually sold it after we moved a few years ago but recently I purchased a used generator that is a Generac/Briggs & Stratton PowerBoss 8500/5500 W generator. The man was honest and told me the engine ran, but it would not make power. I knew immediately I had stumbled across a GEM of a generator as long as the engine ran. I brought it home, ran some resistance tests, hooked up a drill and spun it backwards and excited the magnets, and it immediately started producing power. I cleaned it up and made it look brand new again. I’m keeping this one! I am just about to go and pick up an another generator made by DeVilbiss which is older and has a Tecumseh engine on it. I am going to restore it and turn it into a propane generator since I already have a gasoline generator. I know it will work fine because 20 years ago I sold it to my sister and they have since bought a new one that is dual fuel.
Done that exact repair many times. Good job.!
Donny, you are amazing. Thank You for sharing this video. I appreciate your expertise.
You saved my summer and generator! ❤
This channel is becoming one of, if not my favorite on RUclips. Excellent work!
That was in depth!!! Thank you sir for the as always explanation.
A clear and concise demonstration that even a mechanically challenged DIY-er can understand. 👍🏻
I've got to search your video's to find the valve diag for an ancient Simplicity Techumseh 8ish HP snowblower. I saw it like a year or so ago before my machine backfired very loudly and now won't start. Wish me luck. 😂
I had a Onan Propane generator with only 15 hours of use on it and this happened. I wouldn't start either. Last thing that I checked was the valve lash, Sure enough zero lash on the exhaust side. Set it correctly and it ran great. Wish I would have know about your RUclips site back then. Would have saved me hours of Troubleshooting. Thanks for everything that you do.
Thanks dony.
I just watched your video.Thank you!! It worked perfectly!!
Another awesome video Dony! Greatly appreciate all you do!
So what caused the exhaust valve to "suddenly" become too tight?? after it apparently was running fine before stopping to re-fuel?
wear and tear and lower quality engine
Thanks for sharing a clear video for valves.
I have 49 hours on my benchmark 6250 and now I’m pretty sure this is why it’s not starting. Thanks.
Thank you for going over the steps so clearly….also thanks for showing that sometimes the valves need a second adjustment to get the correct. Enjoyed the video
It looks a lot like a Predator genset. from Habor Freight.
Thanks for sharing knowledge! This method shows how valve adjustments are not hard to perform. Are the Briggs engines similar.
Yes Briggs are similar.
Fantastic video. I never knew valves could be too tight. I've only ever adjusted loose ones. Thanks for posting this great, informative video.
Good tip! Thank you for sharing
You' re setting the valve lash at .004 on both valves?i thought the lash on the exhaust valve should be a bit more than the intake?
Book said 6/8
But what caused it?
It is a fairly new machine. Is this a running in issue?
Are the valves being deformed and work their way into the seats?
Maybe just some bad factory adjustment.
He mentioned cheap soft metal that wears rapidly .
That's a good point. Obviously, if the valve tips or rocker arm tips had worn - then the valve lash would be too loose. So it has to be the valve or seating has worn down. I've had this same problem in the past - too tight.; and always wondered why too tight.
Great Job Donny. I always like to view what you are repairing & I learn more.
Thanks I’m living off grid and this video helped me get my generator started 😌 amazing content
Fixed my problem! Thank you so much!
Thanks donyboy for all the advice you provide. You have helped me out in many occasions with my Ariens snowblower and other small engines. On a slightly different topic, I noticed that some of these engines have Torch brand spark plugs installed from the factory. I recently had a no start problem related to a bad Torch plug and I replaced it with a NGK equivalent. Anyone else had issues with the Torch brand spark plugs.
Thanks Donny!
I like these for the remote start. Do you or anyone have any feedback regarding longevity of these units and if the output power is really dirty or not?
Solved my problem thank you.
Hi Don, You mentioned not to worry about TDC. Does this apply to all valve adjustments or just this application? Another great lesson. Thanks.
I do this for all small engines!
Great video on a must do maintainence step. Change oil, check valve lash and gap plug. 👍
Don, Another great informative video . Keep them coming, i enjoy every one.
Thank you.
excellent explained, I wonder on my 1450 briggs & stratton 20m314 engine on snowblower is thar also 0.004 inch clearence
TY for Sharing
Thanks for sharing your knowledge...it's very empowering...lol.
Great video! Had a similar issue with a dirt bike.
Awesome instructional repair video Don♥
Познавательно и по существу.😊
Thank's Dony for this instruction video, is it the same to ajust the 9HP Craftman snowblower ? Thank's for your help and GOD bless you !
Yes almost the same.
This Man has more knowledge in his pinkie, than 10 men do in their brainZ! Go donyboy !!!! 👍
Great video as always! Well explained and more! Many thanks 👍
Great demo Dony, as always! 👍👍. I always thought you had to worry about top dead center, this way is a lot easier. Is this the same process on lawnmowers? 😮
Yes same process on most ohv engines including lawn tractors
Thanks for the excellent video.
Thanks Don, cracking demo and problem solving, Cheers
Glad you enjoyed it
Thanks
Been there done that but great video. Nice tips for people that don’t know. Great job.👍
Brilliant explanation. Does valve lash decrease from carbon buildup on valve seats? Ive noticed that a lot of the honda clones can burn quite a bit of oil especially on break in. What oil do you recommend? Single weight multiweight synthetic? Thanks been watching uour channel for 14 years
for generators I use 5w30
Thanks again. Best Wishes!
Thank you for the video
Great job Dony, boy that valve was really tight!
Wow. Awesome 😎 👏
Don,
Great video -thank you.
Paul (in MA USA)
Certainly glad I stumbled across this video. I have the exact same machine I might have 10 hours on it yet, so no issues as of yet. Danny, how many hours was on that unit?
approx, 100 hours
Thanks for the excellent tutorial,You did mentioned a low oil shutoff pressure sensor,does this sensor create basically a no spark issue through the ignition? Is this sensor located internally or externally on the motor . Thanks again
Yes low oil will cause it to have no spark, it's located on side of engine bock.
excellent video. thanks for showing and sharing
I have a predator 5000 that wont start on gas or propane. My question is those feeler gauges you used, are they the thickness needed to check the valves on my predator? I have returned so many predator generators they cut me off. I have a brand new one that died and will not start. Plug is good, oil level good but will not start. Please let me know if the feeler gauge thickness is the same for predator, Thank you
Great video. Nicely explained. That's experience for you.
What type of oil do you use for generators?
Very well explained
Great job on your thinking of the vavles might be out of spec
Thanks for the video.
How to differentiate an open valve from a broken connecting rod when no compression?
Remove spark plug. Insert drinking straw till it touches top of piston. Pull starter cord slowly. If straw doesn't move, broken connecting rod is evident.
@davidquinn6161 I repaired a B&S engine recently with a broken connecting rod. It's impossible to have access to the piston while removing the spark plug as it's located on top of valves. That's why I ask for an advise here
If you've already repaired it, why do you need to ask for advise ?
@@davidquinn6161 It was an old machine so I decided to remove the oil pan and see how it was inside, I had nothing to lose. I just ask whether a better way to check this is possible.
So it must be a flat head. I would remove the cylinder head. Only a few bolts and less messy than removing the oil pan. Also allows you to check the valves at the same time.
Great fix , I have seen the same problem , I also check the voltage , and frequency to ensure proper RPM settings . To do this I use a watt meter sold on Amazon it also tells you how much draw a appliance has in wats . Nice meter easy to use not very expensive .
Could you post link here on the meter you use? thanks
P3 P3IP4400, Kill A Watt Electricity Usage Monitor
how does a watt meter help with adjusting rpm/frequency adjustments?
As RPM goes up so does frequency and output voltage , this is how you can check to see that your generator is running at the proper RPM , if not turn carb. adjustments to get proper output voltage .
Hey Donnie. Can you tell me what the recommended valve lash is for a 420 cc Ducar generator engine? I wanted to say also that while my Ducar generator it’s not a Honda, it runs very well and has going on 900 hours on it. Does not burn oil or anything.
I set at approx. .003"-.005"
Donnie, I got a 212 predator that I’ve been adjusting the lash for the last two days and when I think I got it right go to crank it. It still pop and won’t stay running. What do I do, buddy?
Good day. I have a 5.5kw generator and is backfiring, I did adjusted the valves but it still backfires into the exhaust and the carburetor, the oil is fine the spark plug is new and have good spark. Please help!!
Thank you Donny, adjusting valves like this doesn't matter what stroke engine is on? Can I use this procedure for any four stroke engine?
Yes, absolutely
@@donyboy73 okay, I thought the tickets were looser on the compression stroke.
Learned so much from your videos. Thanks Dony
Great job Dan, thanks a lot
👏👏👏👏👏👏 no cabe duda Eres el mejor
Motor made in china 🇨🇳
Great informative video Donny,thank you.
Thanks just learned something new
Great video! Thank You So Very Much for making this video! it Realy helped me out! i Love watching your videos!
Genius... excellent video
Well done.
We had no doubt, Dany.
Great tech session once again!
Real good info , thank you 😊
Awesome job sir
Was the pull cord more difficult to pull over as well? Thanks
Yes it was!
Greetings from Fenwick On and Cheers for this one Don. The timing is perfect. I have an Ariens snowblower with a Chinese engine. The spark plug is/was completely carbon fouled. It starts and runs but misfires a lot. I’ve cleaned the carb three times and installed a new plug. The last time I cleaned the carb with an ultra sonic cleaner. I’m thinking now it’s a valve problem but cannot find the valve clearance specs. Can I adjust mine to .004 as you did?
Thanks again.
I set them at around .004 as you mentioned. Those machines often require a new oem carburetor
@@donyboy73 Thanks Don. That’s what I was afraid of. I adjusted the valves to .004 yesterday, they weren’t far off, and there’s only a slight improvement. OEM carb it is.
Great info. So glad I subbed. Thank you.
good video, thank you
I thought that ohv tended to increase clearance and flat heads closed up.
I just got a duel fuel generater and plan on only useing propaine is there any thing i need to do with gass tank
I would remove it and put oil in it and coat the inside good, drain and install it back
excellent, as always
Good Fix
Cool
What do you normally charge
Excellent video. Make more
Thanks for the video. :)
The customer's report that this happened suddenly (ran fine, refueled and would not start) is a little odd for me. Would you expect an alert user to notice symptoms developing as wear begins to change the lash? I recently obtained my first Honda type (clone) powered device, I may check this at winter prep. Thanks!
IT happens often that way because the momentum of the engine running keeps it going even though it became out of adjustment. Once stopped it becomes very hard to start it and sometimes impossible.