This Generator Backfires & Won't Start

This Generator Backfires & Won't Start - Let's Fix It!

Рет қаралды 26,373

8 ай бұрын

This Generator Backfires & Won't Start - Let's Fix It!
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Tengo tutoriales paso a paso fáciles de seguir y completos, videos de "hágalo usted mismo" (DIY) para ayudarlo con su equipo de jardín y césped roto, incluidos quitanieves y cortadoras de giro cero.
Hago todo lo posible para enseñarle cómo diagnosticar fácilmente problemas de la manera más rápida, rápida y eficiente con reparaciones reales más allá de simplemente reemplazar una bujía. Estos consejos son tanto para el dueño de la casa como para el dueño de la tienda.
Ya sea un motor manual de dos tiempos y dos ciclos como una motosierra, un desmalezador, un desmalezador, una cortadora de hilo, una cortadora de césped, una cortadora de hilo, una cortadora de setos, una podadora, una desbrozadora, un soplador de hojas o unidades de cuatro tiempos y cuatro ciclos como una cortadora de césped, una cortadora de leña, un tractor cortacésped, una cortadora de césped de giro cero, una sopladora de nieve, una lavadora a presión, un generador o una cortadora de césped que necesita que se instalen o reemplacen piezas, soy su persona indicada.
He sido mecánico de motores pequeños durante muchas décadas y también dirijo mi propio taller de reparación, por lo que mis videos están repletos de consejos y trucos que he aprendido y quiero compartir con ustedes. También encontrará muchas revisiones de herramientas y productos de las mejores marcas en mi canal.
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Пікірлер: 151

@jamesc9327 7 ай бұрын

Thank you for another awesome walk through repair my friend. The people in Canada near your shop are certainly blessed to have such a talented mechanic. 👍🏻👍🏻👍🏻

@donyboy73 7 ай бұрын

Thanks 👍

@jimyeske8498 7 ай бұрын

So many people are concerned about finding TDC. Your way is my way too. Always works!

@cottydry 7 ай бұрын

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.

@gcarson19 7 ай бұрын

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!

@donyboy73 7 ай бұрын

Thanks buddy, I really appreciate your support!

@prairiemushroom 4 ай бұрын

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 !

@100vg 7 ай бұрын

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!

@UhBuddy1976 3 ай бұрын

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.

@richarddrempel8912 2 ай бұрын

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.

@mjg263 7 ай бұрын

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!

@donyboy73 7 ай бұрын

it had just over 100hrs

@heterogeneityrocks1 7 ай бұрын

Well done donny

@steveriggenbach90 7 ай бұрын

Thank you, great information. A lot of difference in the valves with a simple adjustment. Take care.

@Odawg3709 7 ай бұрын

Done that exact repair many times. Good job.!

@michaela3029 Ай бұрын

Fantastic video. I never knew valves could be too tight. I've only ever adjusted loose ones. Thanks for posting this great, informative video.

@mikeb6431 7 ай бұрын

This channel is becoming one of, if not my favorite on KZfaq. Excellent work!

@michaelspencer301 7 ай бұрын

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! 👍👍

@mantrahaki3838 3 ай бұрын

Thanks I’m living off grid and this video helped me get my generator started 😌 amazing content

@user-rs1uy8vb2j 7 ай бұрын

That was in depth!!! Thank you sir for the as always explanation.

@timmoore8036 7 ай бұрын

Another awesome video Dony! Greatly appreciate all you do!

@rodneygreen9968 7 ай бұрын

Great Job Donny. I always like to view what you are repairing & I learn more.

@gjensen500 7 ай бұрын

Donny, you are amazing. Thank You for sharing this video. I appreciate your expertise.

@Mudcat597 7 ай бұрын

Good tip! Thank you for sharing

@TheCrittercam001 7 ай бұрын

Awesome instructional repair video Don♥

@gregoryking9348 7 ай бұрын

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. 😂

@lgh081960 7 ай бұрын

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.

@rickmucci4785 7 ай бұрын

Great video as always! Well explained and more! Many thanks 👍

@trcass1 7 ай бұрын

excellent video. thanks for showing and sharing

@robertsimonofsky3959 3 ай бұрын

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

@Jursaw 7 ай бұрын

Great video! Had a similar issue with a dirt bike.

@barrypettit3668 7 ай бұрын

Don, Another great informative video . Keep them coming, i enjoy every one.

@garyhodder2784 7 ай бұрын

Great informative video Donny,thank you.

@harrygrimley4352 7 ай бұрын

Great video. Nicely explained. That's experience for you.

@Paul1958R 4 ай бұрын

Don, Great video -thank you. Paul (in MA USA)

@andrewsteele7663 7 ай бұрын

Thanks Don, cracking demo and problem solving, Cheers

@donyboy73 7 ай бұрын

Glad you enjoyed it

@kencurtis228 7 ай бұрын

TY for Sharing

@THExLAWxMAN 7 ай бұрын

Real good info , thank you 😊

@nitro74cs 7 ай бұрын

Great job Dan, thanks a lot

@deanmoore420 7 ай бұрын

Been there done that but great video. Nice tips for people that don’t know. Great job.👍

@darwindropmazda 7 ай бұрын

Very well explained

@ericstainz9072 7 ай бұрын

Great info. So glad I subbed. Thank you.

@hofnerbass 7 ай бұрын

Genius... excellent video

@BearE9090 7 ай бұрын

Thanks for the excellent video.

@RaysLaughsAndLyrics 7 ай бұрын

Great video on a must do maintainence step. Change oil, check valve lash and gap plug. 👍

@MrBgwolf 5 ай бұрын

Solved my problem thank you.

@johnbelliveau4704 7 ай бұрын

Thanks again. Best Wishes!

@randi740 7 ай бұрын

Great job Dony, boy that valve was really tight!

@PatHiggins-Mayo 7 ай бұрын

Learned so much from your videos. Thanks Dony

@ratt727 7 ай бұрын

Great tech session once again!

@williamalbright8878 7 ай бұрын

Awesome job sir

@ezelk1337 7 ай бұрын

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 KZfaq site back then. Would have saved me hours of Troubleshooting. Thanks for everything that you do.

@liljoeii6091 7 ай бұрын

Thank you for the video

@1beltfed 7 ай бұрын

Thanks for the video. :)

@canoetipper019 7 ай бұрын

Thanks for sharing your knowledge...it's very empowering...lol.

@ChuckD59 7 ай бұрын

Thanks dony.

@tonybrock5228 4 ай бұрын

I just watched your video.Thank you!! It worked perfectly!!

@mrclaus859 7 ай бұрын

Thanks Dony

@kjell-richardlvdal373 7 ай бұрын

excellent explained, I wonder on my 1450 briggs & stratton 20m314 engine on snowblower is thar also 0.004 inch clearence

@warrenvalentino5763 7 ай бұрын

Great video! Thank You So Very Much for making this video! it Realy helped me out! i Love watching your videos!

@bigteeist 7 ай бұрын

Thanks just learned something new

@donskelly6586 7 ай бұрын

Nice job donny...u da man

@annierenard5954 7 ай бұрын

good video, thank you

@mscir 7 ай бұрын

Well done.

@tsherbs1309 7 ай бұрын

excellent, as always

@reginaldcobb5456 7 ай бұрын

Thanks for sharing knowledge! This method shows how valve adjustments are not hard to perform. Are the Briggs engines similar.

@donyboy73 7 ай бұрын

Yes Briggs are similar.

@sebstream8440 2 ай бұрын

Thank you.

@jeffanthony5434 7 ай бұрын

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?

@timcolton4680 7 ай бұрын

Good Fix

@canyonken 7 ай бұрын

Excellent video. Make more

@robertsimpson7113 7 ай бұрын

So what caused the exhaust valve to "suddenly" become too tight?? after it apparently was running fine before stopping to re-fuel?

@donyboy73 7 ай бұрын

wear and tear and lower quality engine

@1oldteck 7 ай бұрын

Thanks

@tonym6920 7 ай бұрын

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? 😮

@donyboy73 7 ай бұрын

Yes same process on most ohv engines including lawn tractors

@johnbelliveau4704 7 ай бұрын

Hi Don, You mentioned not to worry about TDC. Does this apply to all valve adjustments or just this application? Another great lesson. Thanks.

@donyboy73 7 ай бұрын

I do this for all small engines!

@user-ou6cq1ch6q 13 күн бұрын

Познавательно и по существу.😊

@0610591 3 ай бұрын

Merci,

@johnropeleski6006 7 ай бұрын

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?

@philliphall5198 7 ай бұрын

Book said 6/8

@robertmailhos8159 7 ай бұрын

Great job on your thinking of the vavles might be out of spec

@OceanBreeze2022. 7 ай бұрын

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?

@donyboy73 7 ай бұрын

approx, 100 hours

@johnduff36 7 ай бұрын

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

@donyboy73 7 ай бұрын

Yes low oil will cause it to have no spark, it's located on side of engine bock.

@pinatek100 6 ай бұрын

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 !

@donyboy73 6 ай бұрын

Yes almost the same.

@michelpaulcote156 7 ай бұрын

Had a shut off after 30 seconds. Oil level was fine. Eventually I bypassed the low oil sensor, I ran fine. Ordered and installed a new sensor. Sometimes I guess these sensors fail... Thanks for the video.

@YukonHawk1 7 ай бұрын

It looks a lot like a Predator genset. from Habor Freight.

@wtbm123 7 ай бұрын

Cool

@UhBuddy1976 Ай бұрын

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.

@donyboy73 Ай бұрын

I set at approx. .003"-.005"

@Skunkheaven1979 5 ай бұрын

What type of oil do you use for generators?

@chrisssmallengines7163 7 ай бұрын

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 .

@donyboy73 7 ай бұрын

Could you post link here on the meter you use? thanks

@chrisssmallengines7163 7 ай бұрын

P3 P3IP4400, Kill A Watt Electricity Usage Monitor

@michaelotoole1807 7 ай бұрын

how does a watt meter help with adjusting rpm/frequency adjustments?

@chrisssmallengines7163 7 ай бұрын

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 .

@timd5597 7 ай бұрын

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?

@donyboy73 7 ай бұрын

Yes, absolutely

@timd5597 7 ай бұрын

@@donyboy73 okay, I thought the tickets were looser on the compression stroke.

@rjb6327 7 ай бұрын

We had no doubt, Dany.

@richardseymour8746 7 ай бұрын

I just got a duel fuel generater and plan on only useing propaine is there any thing i need to do with gass tank

@philliphall5198 7 ай бұрын

I would remove it and put oil in it and coat the inside good, drain and install it back

@EzRay11 7 ай бұрын

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.

@donyboy73 7 ай бұрын

I set them at around .004 as you mentioned. Those machines often require a new oem carburetor

@EzRay11 7 ай бұрын

@@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.

@Francisco-sx7th 7 ай бұрын

Thanks for the video. How to differentiate an open valve from a broken connecting rod when no compression?

@davidquinn6161 7 ай бұрын

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.

@Francisco-sx7th 7 ай бұрын

@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

@davidquinn6161 7 ай бұрын

If you've already repaired it, why do you need to ask for advise ?

@Francisco-sx7th 7 ай бұрын

@@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.

@davidquinn6161 7 ай бұрын

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.

@petemaverick4538 7 ай бұрын

Was the pull cord more difficult to pull over as well? Thanks

@donyboy73 7 ай бұрын

Yes it was!

@Drottninggatan2017 7 ай бұрын

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?

@Morkvonork 7 ай бұрын

Maybe just some bad factory adjustment.

@johnduff36 7 ай бұрын

He mentioned cheap soft metal that wears rapidly .

@KC_justme 7 ай бұрын

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.

@martindesmarais7158 7 ай бұрын

Rarely/never saw you "wrong" Donnyboy

@bretttufte5394 7 ай бұрын

What do you normally charge

@rooster3019 7 ай бұрын

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!

@donyboy73 7 ай бұрын

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.

@robsdeviceunknown 7 ай бұрын

I have a new Generac genny. Well a few years old and maybe 100 hours. Yall think I should check the valve lash now that it's broke in? Anything you can think of i should do now that its been used a bit? I did change oil recently. Not sure what else. It's the best machine I hve ever had and I want to take the best care of it.

@michaelotoole1807 7 ай бұрын

if its running fine... its running fine.

@michaelotoole1807 7 ай бұрын

i would say get a hertz meter so you can check to see if rpm's are on target. refrigerators don't operate well if the hertz isn't right on 60 hertz. my gen was a little off hertz spec and my fridge compressor was constantly operating but not cooling down. freezer started to thaw out. bad news . cheap multimeter like from ideal with hertz setting should work. the hertz will change a little depending on the amount of load on the generator so when adjusting it make Shure it is under some load.

@michaelotoole1807 7 ай бұрын

if it has a oil filter don't forget to replace it every few oil changes. I also use seafoam and murphy's mystery oil in the fuel. keeps carb happy. small engines run better with high octane fuel as well.