How To Fix A Generator With No Compression That Won't Start

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Generator won't start and has no compression?
Watch this video to see how I repair this compression problem without replacing any parts!
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5 авг 2024

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Комментарии : 228

@ezelk1337 4 года назад

I went through everything on a Kohler propane generator with 30 psi compression. It only had about 20 hours of use on it total. I finally checked the valves and they both had zero play. I set them just like you did and it started right up! You are helping out a lot of people with your videos. Subscribed .Thank you

@petersack5074 3 года назад

what ?? the factory assembly didn't set them right, as 20 hours would NOT WEAR THAT MUCH...?? or just too soft a metal on the ohv parts...

@mwechtal 3 года назад

Our Onan generator specified valve lash check and 1st oil change @ 25 hrs. Valves usually loosen up a bit at first as parts polish themselves while running. Vibration can either tighten or loosen the adjusters though.

@danielswink8348 Год назад

Thank-you, Don! My DuroStar generator is 7 years old with only about 100 hours on it. On 12-23 the power went out. It was about 5 degrees and my generator absolutely would not start. : / All it did was backfire once about every 15 pulls. I researched for weeks, tried new oil, new gas, new spark plug, clean air filter, low oil sensor disconnect, starter fluid and even a new carburetor with no effect at all. Then I found your video. I got a set of feeler gages, I adjusted the valve clearance and about 20 minutes later my generator started on the very first pull and it runs great! 🙂

@1hjehje 4 года назад

I didn't think that the valve adjustment would change that much over time. An excellent video .. Thank You!

@chrisvill54 2 года назад

With RU-vid you can fix anything. I was having no compression on a predator generator. Took the valve cover off and realized both valves had no gap at all when at top dead center. Adjusted them and that fixed the problem. Thanks for the video. Very helpful.

@eosjoe565 4 года назад

I always re-check the gap after tightening the lock nut as 9 times out of 10 it changes the gap slightly. I normally have to compensate by leaving the gap a couple thousands loose prior to tightening the nut. Then when the nut is tightened the gap is right where I want it.

@rstephe 4 года назад

Wow! Glad I am subscribed to learn this one. Never even knew this was an issue. Had valves back out before but never tighten to keep open. Thanks for sharing.

@MRrwmac 4 года назад

Didn’t know that was as much of a problem on new machines! I would have thought a head gasket. Thanks for the tip!

@herbertsjeffrey 3 года назад

Super clear. I enjoyed learning from the cause to solution. Great teacher!

@sailme2day 4 года назад

Thank you Don , your skills and honesty is appreciated .

@barrybebenek8691 4 года назад

Weird that these things have the clearances change so easily. 🤷🏻‍♂️ Thanks for another easy fix. 🇨🇦👍🏼

@robkenna2795 4 года назад

Thanks enjoy your videos, and usually learn something new. You are the type of mechanic everyone would hope to know. Good stuff.

@davidhiggins8505 5 месяцев назад

Thank You! ❤ Our Ryobi generator had a very similar problem(stuck valve). And, your video and expertise helped me fix the gen, and avoid a long drive and hassle. Great information, well delivered.

@bobmcl2406 4 года назад

Clear, well explained, and helpful. Thanks once again Dony!

@steveb.6267 4 года назад

Great video as always. Have 3 Champion generators, my oldest one has close to 3000 hours on it. Other than replacing the pull cord on it and regular oil changes haven’t had any problems with them. I never thought they’d be that good when I first bought them but now I have no trouble recommending them.

@kevinsweir 3 года назад

I have always had problem starting my Champion Generator from day one. Fixed in 10minute. Thank you for all you videos and advice.

@watermanone7567 4 года назад

Great job Donny, I have found many of the 13 hp Honda's with the valves way out of adj. and making them extremely hard to pull over with the rope starter. Thanks for the video's.

@mikemcgrath5905 4 года назад

Thanks for the great tutorial! Very clear instructions. Very informative! Thanks for taking the time! You rock!

@Dave7160 3 года назад

Hi Donyboy73, I just wanted to tell you personally that I have tried everything to get my generator to work and it wouldn't then I saw your video about the valve adjustment and It was the exhaust valve that needed adjustment I did the adjustment of 004, 102mm and put it back together and the generator fired right up on the first pull, it was thanks to your video, you should be nominated for an Emmy award for all the help you give people in getting their equipment running, thank you much for all your help please keep up the great work big thumbs 👍to you sir.

@skipproctor8979 4 года назад

Engine won't start, no compression. Automatic valve job. Thanks Don.

@josephpuchel6497 4 года назад

Hey I have found quite a few of these particular engines having to adjust valves. Excellent video Donyboy

@mikemcgrath5905 3 года назад

Awesome vid again, Tony! I've learned so much from you. I sure wish you lived in my area! I would keep you busy, for sure! Really appreciate you taking all the time and effort to make these videos, and would also like to complement you on how well the videos are shot. Nice camera angles and closeups, and you're easy to understand and listen to. You, my man, rock and roll! You are the absolute best!! Thanks and much appreciation and admiration from here just north of the Motor City in beautiful Michigan!

@zensterful 4 года назад

This is why I love this channel!!!!!

@LessThanHandy 4 года назад

Another lesson for me from the very best. Thank you.

@piratekiller13 5 месяцев назад

Did exactly what you said after buying the feeler gauge and I’ll be dernd if it didn’t start first pull! Thanks for the video and easy to understand instructions!

@160sura 4 года назад

Great video! I am sure this video will save me a lot of time and money in the future! Thanks!

@pippomonti6698 3 года назад

Grazie ragazzo, ti seguo dall'Italia. Fantastici video. Sei il migliore professionista di RU-vid

@manocox1215 3 года назад

had no compression on my generator just followed your instructions and it started first pull thanks buddy really helpful

@butler386 4 года назад

Good old valve adjustment. I needed that reminder. Great video..

@papajon6715 4 года назад

You are offerring a great public service. I want to know who the six people are that dislike this video, are they just 'professional malcontents'?

@donyboy73 4 года назад

usually other guys who do small engine repair and can't make videos

@papajon6715 4 года назад

You have helped me with several mowers with problems over the past few years and I greatly appreciate your invaluable expertise. Professional jealousy had occurred to me but I didn't want to say what flashed across my mind but didn't these bastages' grandparents teach them about the golden rule or even just keeping your pie-hole shut if you can't say something positive? Sorry...

@holdemNE1 4 года назад

Wow, nice simple fix. Thanks for sharing.

@transportationdisasterprev6250 Год назад

Nice video. All info with no BS. Thanks for your time

@rasmo243 4 года назад

Great tip always worth checking what a difference that made to the compression

@RayTuttiver Год назад

i have 6 generators and 4 of them would not run...but since watching this video now they all run great thanks a million

@gigiraymond9267 3 года назад

Thanks Dony for the information , this is very important to know . Thanks for the video , God bless you .

@chuckvoss9344 3 года назад

Very good. First time I have heard of this type of problem. Tks.

@BigDmike24 4 года назад

Awesome fix. Didn't know that information. Thanks!

@vetterfellow 4 года назад

Outstanding DB73; The first thing I thought of was rings among other culprits :-( This is why you get the BIG money :-) Thanks you for another video My Friend, God Bless !!!!.

@bobfrey6953 Год назад

Have a Smarter Tools 7500 W dual fuel generator that I use at our off grid cabin. It was becoming increasingly harder to start and finally would not start. Checked the compression - ZERO! Saw this video and checked my valves (just like yours, the intake was loose, the exhaust was tight). Adjusted both to .004", put the valve cover back on and wouldn't you know it - started RIGHT up! Thanks!

@JimFixIt74 4 года назад

Great video Don! Very helpful.

@bopalouie 2 месяца назад

Thank you! This got my little Generac 3600 going

@pauldelamere 2 года назад

Thanks donyboy I will check and sort my one tomorrow, I just bought it from auction site its nearly new so was glad to hear you say it can happen to nearly new as well, thank you from Edinburgh Scotland 🏴󠁧󠁢󠁳󠁣󠁴󠁿🍻👍

@donyboy73 2 года назад

No problem 👍

@rickster7834 4 года назад

Another great video and tip. Thanks!

@jimmeyer803 3 года назад

BIG "D"... THANK YOU. I just saved myself 200bucks in parts! I'll never trust any local engine guys again without looking for a fix with you 1st!

@charlesroberts3910 2 года назад

Thank you for the tips Donyboy

@nashguy207 4 года назад

Good Job donyboy great tip for people!!!

@clauslundberg9224 4 года назад

Super useful - thanks for sharing

@thelawnranger184 2 года назад

A genius at work.

@cedricmerritt7664 4 года назад

Great video! I knew it was the valves!

@milwsdl39 3 года назад

Well I just picked up a generator for half of a local yard sale page guy said he ran it went low on oil but then it doesn’t seem to work now no compression so hopefully it’s the valves thanks for the video

@michaelchilders1658 2 года назад

Awesome teacher!! Thanks so much!!👍🔥

@BradleyRains 4 года назад

@donyboy73 .. thanks for the video man!! Saved my butt! This was the exact issue. Dealing with the power outages out here in California having to rely on generators. Thought mine had cooked a ring- nope- you totally saved the day! Didn’t have feeler gauges but got it good enough by feel and using a headlamp in middle of the night. Got power going just in time for the mrs to get home and have heat and lights. Thanks Again!

@billlovett4256 4 года назад

Awesome video, you're the king.

@Pitross20 4 года назад

Great work as usual .

@f.demascio1857 4 года назад

Seeing those valve adjustments reminded me of the many VW's I owned in the past. Seems like I was adjusting those damn things every other weekend, & #3 was always tight due to the excessive heat at that part of the engine (Type 3's.)

@rexbenoit1073 4 года назад

thank you I think you just solved my trouble with my champion generator.

@robmochdre 4 года назад

Another great vid! Thanks don !

@scottfirman 4 года назад

I always check the valves on any OHV engine that has starting issues after checking the carb. As you said, no compression is the biggest give away on those engines. Especially riding mowers in really good condition. I also pull the plugs first thing. An oil soaked spark plug means bad news. After seeing a no oil plug, I know then its just valves. I have had stuck valves on older generator too. A poorly maintained generator is just asking for trouble.

@elpunto231 4 года назад

RC Hobbyist Extreme ohh nice to see you here ;) i love this chanell to ;)

@jamestackett2879 4 года назад

Good video thanks for sharing.

@GrampiesWorkshop 4 года назад

How's she goin'? Air, fuel and spark is all you need to make the engine run. Well not quite!!! You also need compression!!! Great video and thanks for sharing!!!

@matthewkallevant7558 2 года назад

You need a nice tight space to make the air spark and fuel go boom 💥 😂

@mrbottomfeeder 4 года назад

Great infor. Thank you. Thank you.

@garrettstevensen2467 4 года назад

Damn I love this channel!!!

@robertmailhos8159 4 года назад

Great fix on the motor my canadian brother 😄😊🙂😃😁😀

@stevenmchenry9276 11 месяцев назад

Donyboy I'm going to try it but I have not been having good luck. Thanks for the video.

@papabits5721 4 года назад

Always great content.

@alvarosantibanez5565 4 месяца назад

I like the way you explain

@genehensley767 4 года назад

You're a genius no doubt about it

@michaelj38 Год назад

Thanks for this video. My exhaust valve was out and after I adjusted it the engine started right up. Engine only has nine hours on it.

@rdpaullin Месяц назад

Thank you Donyboy73, excellent video. I appreciate your information

@jill4618 3 года назад

Really appreciate the video, our new champion all sudden decided it didn’t wanna start. Pulling the recoil I could tell no compression. Upon opening valve cover, both valves were sloppy loose. What causes this issue? Never had this issue with my firman genny, in fact we bought the champion to replace my firman wit 3800 hrs on it. When the champion refused to start, the firman started first pull.

@jefferyoneil944 4 года назад

Thanks Donny

@colinevans7134 2 года назад

Another good video from croydon surrey England 👍 👏 👍

@ebfromwyoming4118 3 года назад

great video sir thks

@briangill6219 4 года назад

Well done!

@themowerman 4 года назад

Great job well done

@RangerTim 2 года назад

Great video

@lebaroncars 2 года назад

Mine doing the same great video thanks

@jamesbolt7090 2 года назад

Thank you!

@charlesoverton Год назад

A good one, thanks

@danmorrissette4814 4 года назад

Great!! Thanks!!

@davemarks7322 4 года назад

Awsome...as usual.

@tomycodd 4 года назад

Thank you Don for the great video! Where do you get your parts for Champion generators?

@HenrykandBasiaJarzabek 4 года назад

you are the best!

@willtricks9432 4 года назад

Nice. Thanks

@themishernandez1738 4 года назад

Hi, great videos super easy to understand, I have a problem with the battery connection to start, could you helo me with the process of instaling the battery in a gasoline engine

@ronraby4561 26 дней назад

Thank you sir

@jamesws3 3 года назад

How is the "One valve open, one valve closed" method different from adjusting with both closed and piston at TDC on compression stroke as I've also seen? Either way, great video as always!!

@iamrichrocker 4 года назад

with Honda being so darn expensive i have bought a Champion and am very happy...this video will be great reference if ever this happens..thx..

@alanlevine3984 4 года назад

Excellent

@thomasedwards3428 3 года назад

Your awesome 😊 problem solved. 👍

@Jake-jw3sk 4 года назад

Hi Don. I've been looking every where on internet and can't find information on how much compression a generator is supposed to have! My generator that I'm working on is 2300 watts, it looks about the same size as that one. By the way great video, like always. I am interested in making a business like yours when I'm older.

@philliphall5198 17 дней назад

90-120 is plenty

@daydaysaint6657 4 года назад

I have this jonsered st2261e snowblower about a year old no spark anything you could tell me to do or try anyway I think your RU-vid is great thanks Dave

@unfundedopportunities7278 4 года назад

Donny, if replacements for carburetor-mounting and exhaust gaskets are not available, what do you think of cleaning both sides of existing gaskets and coating with gasket maker? Making a gasket is difficult.

@Jim-ie6uf 4 года назад

Thanks

@zx8401ztv 4 года назад

Those adjustments do seem to wander off over time, easy to forget :-)

@sajid390390 2 года назад

Hi, Thank you so much for sharing such nice info. My generator is starting correctly and running the load correctly. But there is one issue. The generator is bubbling too heavily. It has too much vibration. Looks like it will break the frame or some parts of the engine. Please guide me on how to fix it and make it smooth. The frequency is stable and controllable. Voltages are correct. Only too much vibration and bubbling.

@sergiomontemayorgutierrez9839 4 года назад

Un saludos desde Monterrey Nuevo León México.

@donyboy73 4 года назад

gracias

@angrybobking5083 3 года назад

I have a Honda EB3000c generator that died on me ice fishing this year never ran again. Just did a compression test wet/dry and failed miserably. Was gonna just throw it away and go get a new one when I thought " ah I'll just check and see how bad it is to tear these down. Stumbled upon this video and that exactly what it was set the valves to .004 and started first pull. Can't believe I almost threw this away when it was a 3 min fix!

@mattludlum1916 7 месяцев назад

Just bought a "broken" generator with only 1-2 PSI compression - cylinder seemed ok so a quick search later brought me here. Exhaust valve was very tight with no play. Loosening it and setting to .004" seemed to restore the compression - I could tell just by air whooshing out of the spark plug hole. Put it back together and the generator came to life off started fluid. It'd be good to have a general "guide" to compression for small engines, including what "unloaders" will do to the readings.

@thomasramsay4286 3 года назад

Have you ever run into a 16hp Wen generator that breaks exhaust valves? Twice it has broken off the top of the valve. No damage to the piston so I'm suspecting a valve guide that is a bit under sized. Any thoughts would be appreciated.

@edwardkawecki8101 4 года назад

Donny, just like to complement you on all your videos, excellent teaching aids. I also have to make a shout out to "Steve's Small Engine Repair" channel and "Taryl Fixes All" channel. My top 3 sm. eng. subscriptions. Just goes to show there is more then one road to the same destination. Thanks Ed Cleve. Oh.