High Compression - Impossible to Start Generac Generator
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- Опубліковано 12 чер 2024
- My friend Jason sold one of his generators to a contractor. The contractor offered up his old Generac GP7500e to Jason at no cost. No information was provided about its run condition. I assume it has high hours and no longer runs. I turned the engine over and it sounds good, but the compression is really high making it difficult if not impossible to start. It this a parts machine or will it run again?
I no longer use Harbor Freight Super Heavy Duty Degreaser in my ultrasonic cleaner. Harbor Freight changed the recipe. The bottle previously stated "NON-CORROSIVE". Now it says "CORROSIVE", "do not user on Aluminum". It now damages most carburetors. Recently I have been using Simple Green PRO HD with good results.
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#Generac #GeneratorRepair #Generator #SmallEngineRepair #SmallEngine #DIY #Fixed #Troubleshooting #howto
Adjust Valves, Alternator, Broken Compression Release, Carburetor Cleaning, Clean Slip Rings, Compression Test, Decompression System, Dirty Carb, Engine Rebuild, Fixed, Generator, Hard To Start, Hertz, High Compression, How To, How-To, Insulation Test, Load Test, NGK BPR5ES, Old Fuel, Open Engine, Partial Choke, Remove Rotor, Remove Stator, Repair, Resistance Test, Small Engine, Stalls, Struggles to Crank, Stuck Compression Release, Surging, Troubleshooting, Valve Lash - Навчання та стиль
Who else watches the whole video without skipping a bit 😊
Your videos are very relaxing, educational and very well explained, my favorite channel 👌
I watch everyone i have learned so much from James the guy is a master.
Can't skip through any of James videos 😊
I skip through
But im also a mechanic by trade so theres a lot i can skip without missing out
I cherish every minute of his videos. They keep me sane at age 82 with a disintegrating body.
The key isn't skipping parts of the video. It is however, watching at 2x playback speed which is very doable with his videos.
James im 85 years i have the knowledge and all the tools you are using. I will give all the tools to a person who works like you and i used to do.
I'm still learning from this man and I'm 60 years old and I still don't have all the stuff that he's got but I'm still working on him I'm still learning what he does he does things a little bit different than I do
That's a great gesture sir... I hope you find a deserving person..
Good man!
You are beyond reproach. 😊
James..???
When you swapped carbs.. possible the main jet was not the same and or may have been smaller than the original carb may have been...you were saying that the carb looked like it had been changed ....main jet may not have been large enough for the 7500 watt pull????
Coffee,check. Egg Scramble, check. James Condon Thursday morning video, check. All systems go for a great day!
I commented a few months back about the length of your vids. I now realize IF I had one of these generators, there is no better video to follow to repair it. This is the best small engine repair channel on YT.
Well, more specifically generators as that's probably 80-90 % of his content. If you want fairly concise but informative videos I would say DonyBoy73 or Steve's Small Engine Saloon. James is like Mustie1 where you can sit and watch the videos for an hour or more but for diagnostic purposes James is pretty good all the way. Of course for handheld engines, Chickanic is pretty good and for advice as well and Taryl is informative in a Red Green style, just without duct tape.
No matter how many generators you work on there is always one that shows you something you haven't seen.
The time-lapse of the ultrasonic carb cleaning is always extremely satisfying to watch. Gourmet.
I immediately spotted the fault. It has no fuel tank!
Ain't got no gas in it..... mmmmhmmm
What you got good to eat in there?@@DeadKoby
These really are beautiful machines. I have a 15 year old Husky 3750 watt generator that never had any service and ran for 3 days straight powering my parent’s house during hurricane Sandy 12 years ago. Inspired by your videos I decided to give it a chance at some more life and did a full service. It had about 300 ml of oil in the engine…factory oil that had never been changed. Carburetor was a mess. After the JC treatment it runs like a champ again. Thanks so much for the education and inspiration!
The one thing I enjoy most about your videos is that no matter how much I think I know about mechanics, engines, and how things work... I ALWAYS learn something new from you!! Especially the small little details that most either overlook or ignore. In my experience, those are the ones that either make or break you. Yours rapidly became my favorite channel. Thank you for your detail to the little tubes things.
Little things
Aahhh, a fresh cuppa and Jim is on the screen.😊
A James Condon video is not complete unless it includes a trip to the paint booth. Well done.
Paint does not survive long in his area,that motor had silver spray paint all over it already,
Thanks James-it's channels/videos like yours that *will* make cable tv obsolete.
Wow, thanks
@@jcondon1 // James; I just went back and re-watched this, namely because of your response. During the video I thought "I think it's true" especially when it involves an item(s) that are rescued from a landfill, or those people design/build themselves. Fact is, I regularly see comments stating "This is way better than anything on tv" i.e., the "how to/mechanical" related videos e.g., repair, rescue/restore, etc. Those comments and even some here, reflect the fact that people are starting to choose to watch videos like the ones listed here [you are helping someone]. 👍 God bless.
Another one cleaned up, dressed up and ready to go back to work.
I own a couple of Honda's. I never understood why they bother with a dipstick. We have all been taught that if there is oil on the hash marks, were good. This isn't true with these. Great save on this one.
Excellent video, professor. Imagine that...broken dipstick. Another genset saved from the junk pile.
i got the honeywel 7500 and it powers my house.. your videos have saved me soo much in parts and maintenance repairs/ i wish u were my neighbor here in MidCoast maine, Small engie repairs guys are dissapaering
I have always wanted to retire to Maine.
Howdy neighbor. Another MidCoast Mainer who enjoys James' must watch weekly video.
What heat do you set the sonic cleaner at.for cleaning your carbs
@@jcondon1 Come on up! I retired here from MA in 2016. Great place to live. Question: I knew of a Condon family in Dawchestah, MA. Are you related?
@@williamwallace8994 Waldo County- Swan Lake.. retired and bult after 20 yrs on Active Duty USMC..
Nicely done James. It never gets old.😊
Great job James
Nice job Jim! Thanks!
I've come to think of your Thursday morning upload as the start of the weekend. Nice!
Another great episode. Thanks James!
Thanks for sharing James, another great video. Thursday morning at 7am has become my weekly ritual to watch your videos. 👍🇨🇦
Great work and explanations throughout
Examining every detail and solving the problem is a great skill. I congratulate you. Thank you.
Great video James. See you next week.
Another excellent video, James. I love the way you work, so methodical. Thanks for sharing.
Great troubleshooting James 😊
excellent and very useful show! thanks for the publishing.
Think about it: With 20/20 hindsight, draining the oil and doing a borescope inspection, pulling out those 2 pieces, it could have been running in 20 minutes.
Thing is, you put it through the paint shop, upgraded the carb, reset the valves.
Sure. It gives up a little performance, but that thing is rock solid. It’s better than new.
Well done.
I beg to differ. The piece of the plastic dip stick was lodged underneath the compression relief slide, and was removed by working the slide back and forth. You can't do that with a bore scope.
These Thursday morning releases just make my day! Thank you sir, another "revival" gone beautifully!
Very enjoyable my friend watching a very knowledgeable gent at work
Welcome back!
Another victory, for James.
Well done, sir !!
Perfect timing for me. I have an engine that is showing excessively high compression. This gives me at least a starting point. Thanks...
I worked on a friend's WGen9500df. The electric start wouldn't work and the pull cord was broken. He had bought a new battery, expecting that was the problem.
The underlying cause was a failed compression release on the camshaft. The high compression combined with the wireless remote electric start repeatedly cranked the engine until the starter burnt out. The broken cord was from him trying to pull start it.
The starter rotor wasn't just a little toasted, it was fully charred with a strong smell.
In my case the compression release wasn't simply jammed. It was horribly mangled, with broken pieces beating up the oil level float frame, breaking the tip of the oil splash fin, and leaving plenty of gouges elsewhere.
Every part that needed to be replaced was out of stock from Westinghouse, while most other parts were listed as available. I suspect that this wasn't a one-off failure.
Thank you James. I totally enjoyed watching this video. I always learn something from you.
I watched the whole video. Great find.
I always learn something from your videos, as does my confidence in problem solving and engine repair.
Opps I didn’t know I was supposed to put my age. I’m old and have been tinkering with engine for more than 50 years !, and I’m always trying to learn new things , because things change and learning is the name of the game.
James, keep up the great content. Loving the generator videos!
I picked up my late Father-in-law's PowerStroke 6800 Watt unit with the Honda GX390 engine (NOT a clone!) The generator counter had....22 hours on it! The unit sat in his shed and got a lot of crud on it, but thankfully no mouse house. Cleaned up nicely. I had to remove OLD fuel. Changed the oil, removed the carb and gave it a deep cleaning. The engine started on first pull and runs great. Why? Because I watch James Condon videos and I did EXACTLY what he does. Thank you for the great work you do, Jim.
Enjoyed the video. Thanks for sharing
Another fantastic video.....thanks
Great find James.
Love your videos
Another Thursday generator gets saved,very enjoyable video
Saved another one from the scrap pile great job keep them coming
I recently had to remove a GP5500 generator head and didn't have a gear puller for the stator. I ended up using 2 large reversible trigger clamp and pushed the stator off the crank cover. worked surprisingly well.
I watch these beginning to end. I enjoy the problem solving style that James has. Its hard to find someone who knows what theyre doing and cares about their work. Good Job James, Good Job!
Watching from South Africa loving your work
Cool!
Nice work. Its fascinating how such a small plastic part can gum up the works. Great job!
Thank you again sir for another interesting video.
Jason seems like someone you’ve mentioned before, like he’s a regular contributor of machines in need of diagnosis and treatment by Dr. Condon
I like the fact that you don't skip details when you get towards the end. So many cut out details as they get close to the end and if your trying to do something the way they do it doesn't work. I really enjoy your channel James. Keep it up.
what i was taught in gen. repair school is NOT to exceed 80% of total load of the MAX cap. of the gen. set. so far its worked for me for years. nice save on this gen. set !
best blog I've seen in a long time coming from your channel. I like longer bogs and keep me interested longer and you taught me something
Thank you for all your videos! Really informative. You are an important reference for all of us. Thanks again ! I'm already looking forward to your next videos to learn more. 🍺🍺🍺
Without the video no one will believe you about the broken dipstick! Great job as usual.
That starter sounded like the Tardis (Dr Who) getting ready to time jump😂
One of my favorite shows.
Wow I really enjoyed watching every minute of this precise trouble shooting video! you have tons of patients and you really get into every aspect of every component of the motor! I love the details, they are an intricate part of putting everything into its own place and the calibration is so well explained too!
Wow, never woulda guessed that dipstick piece👍👍👍👍
Super interesting video James thanks for sharing 🦘
Nice one, James
another great video I remember your first video
Great save James even at 7k, watching late wife not feeling well and better that I'm not on UA-cam.
Keep posting as everytime I learn something new.
Tks Michael
Great video! Looks like a new machine, not a throwaway! I thought the oil plug looked funny when you checked the oil. Your videos are so good I could almost see the plastic dipstick was broken. Enjoyed the video, keep it up!
Great watch.
perfect restoration :)
I have fixed a generator for a friend lucky for him it just needed a coil now it runs great
Good job keep it up my friend, 👍
I have been using those Autozone spark plug gap tools for years, and I never thought to use the hole to widen the gap. I guess you learn something new every day, lol.
thumbs up,great video,yea i was watching for that compression release bump in the beginning,the new honda mower engines are having issues also hard starting,cam related always enjoy these videos
Great job. 👍👍
So easy to understand when units are litres etc.
James, I've watched many of your videos repairing generators and I have often had the thought that maybe star washers ought to be installed on the threaded electrical terminals to ensure the best possible connections. It would be a small thing with huge results, in my opinion.
best channel on youtube
Awesome video!! 🤗... We have this exact generator! Same make, model and watts!! I learned a lot!! Ours is nearly new with only about 15 hours of use (I didn't check it yet). But lots of valuable information. Thanks 😊
wtf just a little piece from the oil cap can do this? amazed and terrified for that labor. good work.
Heat works magic on rusty bolts... better than any canned product. I always keep my propane torch in the garage with me when working on the car.
Another beautiful rescue, James. That bit about the contaminant being a part of the dipstick is almost baffling. The only way I can see that happening is outright carelessness on the part of someone operating that generator, and it reminds me of something which happened quite a few years back.
A large (15KW iirc) generator had been loaned by a church group to a Boy Scouts group, but came back not working correctly. I was asked to have a look at it. I found that it started but would only idle after starting, which was baffling to me at the time. It took me a while and a few tries before I finally realised that there was "something screwy" about the throttle control. It looked almost... backwards. After further investigation, I realised that it looked to have been pushed all the way past the full throttle position and right around to the idle position again, and was jammed there by a metal bar which should have fouled it on the way through and prevented that from happening. With a lot of effort, I managed to force the idle control back past the bar and when I started the engine again, the generator came up to speed and regulated correctly. So it was fairly obvious that someone had abused the generator and maybe even deliberately fiddled around with it in a way which wouldn't be too obvious and which they thought would be very hard to discover. I'm pleased that it proved not too difficult for me to discover and fix. 😄 I still don't know how it actually happened, and I'm glad that it wasn't my job to find out.
My little generator repair seems to be finished (need to double-check when I start it next time). I got it running, I confirmed that it would hold the right speed supplying 1000 Watts to a heater (it's rated for 1500 Watts maximum continuous load), and with the help of a frequency analysis app on my phone, I set the speed as close to correct as I could. The speed is supposed to be 3000 rpm for my country's 50Hz power supply, so since it's a 4-stroke engine which fires once every 2 rotations, I set it so that the frequency the analyser could "hear" from the exhaust was a tad over 1500Hz. I'll give it a final test along with my regular monthly "maintenance run" of the other two generators I have, then decide if it's worth selling or not. I'd guess I'll only get back about what I've put into repairing it. Maybe a bit more if I'm lucky.
Awesome. Those frequency apps come in real handy.
If only you had been my Power Mechanics teacher in high school. I coulda been a contender!
Erase that FIVE and change it to a ZERO... Voil`a 7000 watt generator. You do admirable work and put together an enjoyable video to boot. Much appreciated..
Given the crusty exterior look I am surprised this machine didn't fight you more. Good lesson today on how the smallest bit of debris in the wrong place can cause foreign object damage (FOD). Good video James.
Hi James, I've watched maybe all your videos and enjoy them all. You might make mention of the screwdriver that you use to remove the main jet / emulsion tube for the benefit of those watching your videos. That's a 'special' ground screwdriver made for the purpose. Some new viewers may not realize that and try to use a regular screwdriver which will bugger up the jet for sure!
I should, but the set I use is no longer available. Here is a link on it ua-cam.com/video/jN5c76XCQFo/v-deo.htmlsi=Pl6GB_xrtNQlNKsd
@@jcondon1 Great reference video! I enjoy Donyboy's videos as well. Thanks!
My FiL left me one, and I don’t know what it was, until James was using it and I made the connection.
‘WOW!’ James has the same screwed up screwdriver as the one Dad left!’
Duh.
‘Today I learned…’
I have seen many stuck decompression weights and have never conclusively seen the actual cause. this is a bonus! I always felt odd putting it back together and never knowing. I never got a call back for it. So I assume cleaning them, fixed them. :-) If I needed I genset and lived in your area, I would easily pay more than market value for one of yours. I would never underestimate the value you put into these generators to make them the best!
I usually replace the cam if I cannot find a cause and know it is fixed. Usually it’s not obvious like this one was.
Lovely, thank-you. Yes, if it can happen, it will happen!
And yes, running any machine at its maximum rated capacity is a bad thing. As a very good friend of mine says, "Always keep a little in reserve!"
James, Love watching you. One thing I noticed is when I work on stuff that is stuck, bolts, nuts etc. Apply whatever spray you like best, but I always let it soak. Makes a world of difference. The PTO you had stuck on the Cubcadet was one example.
Anyway, keep the videos coming. I still have a problem with my Cubcadet kz1042kw, hydro transmission, hangs in forward. Very annoting, reverse is ok.
Sam
Letting it soak is the way to go. Unfortunately, I have a schedule to keep so usually rush though that part. It still helps spin the nut or bolt out once moving.
Awesome job snd video. You are expert for this motors. 🙌🙌🙌🙌🙌😊👍👌🍀🙏🙏
James, if you keep loosing a .001" or 2 when adjusting the valves, start with a larger sized feeler gauge.
Hello from Australia
👌👌👍👍 Nice work! Oddly satisfying and calming to watch work being done in an orderly manner. Maybe the 7500 watts is just the "surge load" as opposed to the running load?
Jim...love your vids! But when I started watching this one...that handle was irritating me!😂
Me too
Thanks!
Thanks
Very good video James. Thank you for the finer points of editing, it made it flow smoothly from a viewer perspective. Just a couple things I'd like to mention. 1). The carb you replaced may not be matched or manufactured to the spec's needed for that engine. So possibly there is an A/F ratio issue at max demand. 2). There are feeler guages w/ a step on them to be used as a "Go-No-Go" quick measure. And finally, 3). I own a 1970 Montgomery Wards lawn tractor (Gilson built) that has a 14 hp Briggs engine that some how my son put the engine oil dipstick in wrong and something chewed the end of it off. The dipstick tube is rigidly attached and sticks up above the main engine block making the dipstick about 9 inches long. The dipstick is metal so there are metal shavings and bits all over internally. That lawn tractor was very well built and is still on the job. Gilson designed it very robustly. Hydrostatic drive makes the rototiller work perfectly. 42" mower deck & 46" snow plow are hydraulic lift. A fine example of "proudly made in The U.S.A." FB James, tnx. ben/ michigan
Defiantly could be jetting. The engine was holding well at 7200 watts at about 59.5 hertz.
And by the way James I finally broke down and bought me a inch pound torque wrench finally LOL thanks for the info buddy appreciate you
Hi james watching from kenya🎉
With that generator being an ex contractor machine and the total hours and prior maintenance unknown the hp loss could be from normal engine wear. A new ring job and valve lapping could restore it to as new. But i agree its not worth the effort and expense. Close enough !! Great job, James !
Was thinking the same.
I bought an EV several months ago. Seeing that orange debris stuck on that cam preventing that piece from sliding. It’s amazing how many little intricate parts a gas engine has.
Compared to an EV which you could say compensates by having a sophisticated inverter, but it’s far less mechanical things that can get stuck.
That said, I did just buy a duromax generator and lamenting having to reinvest my time into dealing with an internal combustion engine again. Oil oil oil.
That fuel line looks like that vulcanite they make for the black pipe stems of smoking pipes. It's hardened rubber as well.
" ask me how I know" the voice of experience
James, I love watching these videos. If anyone is a professional on generators it's you. I wonder if you could recommend a brand or do a Q & A on which brand to purchase, and which ones to avoid.
Until I get a "broken" engine running properly, I just add used oil if it is low.