Generac 15 kw generator won't start? Two common problems 

The first issue saved my family from sleeping in the dark or without any A/C after the most recent hurricane. Thanks for sharing!

If the battery drops below a certain voltage it blows that fuse too. It's like a safety warning to you that if the fuse blows odds are your battery might be not up to snug for it. Had a battery that was a little weak but still good and it kept blowing fuse. Changed battery and fuse stayed good. Hope this helps

Thanks. I spent an hour on the phone with Generac help line and they didn't mention this and told me to buy a new battery. I pulled the fuse and naturally its burned out.

Great to know I have one just like that and your video is the only one that I have found.

Great video - wish I had found it earlier!!!

Thanks for this video. Was looking for a fuse ont the front panel and found none... Though also was a bad battery, so charge it.. nothing again.. I was going to replace the ignition switch since nothing happened when pushing the switch and found your video. Found the fuse and looks fried. Will order that and see. Thanks again !!

Well changed the oil and cleaned out gas tank today... Hooked up jumper cables to the dead battery.... Nothing.... Running to the auto parts to get a fuse... Pulled mine out and it is in fact blown... Hoping and praying this fixes it.... Nice Video......Thanks

Thanks, you saved me. Ive replaced the carb. once a few years ago. I had a feeling it was the solenoid again. After seeing your video, I'm checking it first.. Good job.

Thank you so much for this video! You are a lifesaver! The generator was running fine after the last bad nor'easter. Turned it off to fill up - and it didn't start back. Without you we would never have found that fuse!

I have the 17,500 version. If I squirted a little gas in the carb, it would run for a few seconds and then die. Irma is threatening us and I probably spent 4 hours screwing with this. Even took out the carb and cleaned it up. I wondered about that Electric thing. This morning I watched and listened to your youtube posting and I knew exactly what to do. The solenoid was definitely frozen. I pulled out the cylinder and cleaned it with carb cleaner the verified that it worked. I now have a working monster generator. THANKS so much, I'm ready for Irma now. Steve

I am so grateful to you for this video. I know nothing about generators, and no just a little about small engine repair. But the bigger the motors get the more complicated they are. I ran into the same problem I push the starter but it would not keep running. I pour gas down to third of the carburetor and it would run so I knew it was not a firing problem. I had never come across the solenoid issue before on a carburetor. But sure enough I followed your instructions, and the solenoid was the problem. On my end I had not started the motor frequently enough and waited too long before firing the engine up. So when I pull the solenoid out it was gummed up I could smell how the gas had turned to turpentine. Anyway, was a little cleaning solenoid worked again just fine and the motor started right up. I cannot thank you enough for posting this video. As the last poster stated you’re a godsend. Thank you so much. Lou

This video is gold! Replacing the fuse saved me hundreds in transporting and repairing my Generac at the shop. Thank you for sharing!

Thank you Thank you Thank you...The storm was coming I went to test my 15k and the starter was dead dead dead.. Just like you stated....yup, I Praise God for guiding me to your video.

Thank you! I had both of those problems fixed, as you stated. I did not replace the selenoid because I always shut the gas off, which almost dries the carburetor.

I was able to remove the solenoid and cleaned the plunger with carb cleaner. It was really gummed up. Once I freed it up I reinstalled it and started the generator I also drained the bowl. There is a drain tube on the bottom of the carb. Connect a spare piece of fuel line to it. Then turn the screw and it will drain the bowl. You need a cup to catch the old gas in. Thanks.

Fixed it! I have the 17,500 model and your video helped me diagnose and start my generator. Excellent to the point video. Thank you Sir!

Thank you so much, i tried everything and it didn't start until i saw your video about the fuse Thank you so much again

Thanks so much for this video. I didn't think to check the fuel solenoid. Totally solved my issues.

Thank you for the informative video. I was pulling my hair out for two days and yes it was the solenoid. Awaiting hurricane Dorian and my generator would not start. Thank you so much!

I have had this generator since 2004. I have had to replace the silinod twice. Been chasing wires to find why it would not crank this time. I am glad I found your video. I never seen the fuse on the schematics

Thank you! Great job, you saved me a lot of time troubleshooting the no start situation. I found out the hard way why the manufacturer installed the fuel solenoid in the carburetor: it prevents fuel from flooding the engine and locking up the cylinder.

Thanks for posting this. I had a blow fuse and wouldn't have known it if it weren't for the time you spent!

Appreciate you taking the time to make this video. Pulled mine out today to fire it up and it won’t run. Carb bowl won’t fill either. Thinking it’s that solenoid so I’ll check that next!

Well I must say this video was very helpful. I drove myself crazy. I changed the Fuel Pump, all lines, and spark plugs. I cleaned the carburetor and nothing. Till I watched this video. I took the solenoid apart which is very easy. I cleaned it out with carb cleaner. I put it back together and walls it worked. Dam I spent an entire week trying to fix the problem till I came to this video. Thank you Thank You.

Wow, thank you. I’ve been all over this generator and couldn’t find the problem. It acted like a fuse but I sure couldn’t find one and wouldn’t have with out your video.

thanks brother for the information

Thanks for the information adrianrog! Darn fuel solenoid causing me grief! Removed the spring and plunger and she is purring like a kitten!

This video helped me get my gp15000e running. Thanks!

I have the 17k Ultra Source 4583 but got the same problem. So checked the fuse, its ok. Then I removed the "fuel-shutoff" solenoid, then removed the plunger & put everything back together. Then hit the start button, it fired right up. Was doing some popping & acting like it was about to stop, but kept running. So I hit the idle-control toggle switch on control panel to speed it up. It smoothed out. I've re-started it several times with good results. So I will order this part & replace the bad one. Thank you for this excellent video.

thanks so much! just got our 17500e started! the solenoid was stuck

Perfect...my issue was the solenoid. Can't thank you enough!

LIFE SAVER!! She runs flawless... Thanks

I don't use non ethanol gas and have all my small engines on a 3 week start schedule. If I start on the 14th of the month, next month it gets started and ran on the 7th etc etc. Thanks much for the info on the fuse location and the anti backfire solenoid. I'm familiar with them on my riding mower but have never had an issue. Thanks!

My GP15000 will not turn off. Have to close the fuel valve and wait for the fuel to run dry. Any ideas out there?

thank you, I was looking for that fuse!

Thank you, I had the same problem with the fuse. It was very helpful what you did and selfless. In my case, to top it all, the fuse casing was broken from the factory hard time to remove it. Also from the factory the wire on top of the breaker Of my GP17500e was loose I believe it is what shot the the voltage up and down resulting in various surge protectors and one GFCI outlet to blowup and carbonize. I have a voltage regulator coming in case. It was the culprit. I had a better impression of that company until now. Very difficult to find help if you are a portable generator owner all repair places only do small engine repair, as soon as you mention it is electrical they wont touch it. there are no service manual to be had etc etc. I though a US company would be different than a chinese one.

Thanks for sharing. Good job troubleshooting and finding the faults. Hope O never need to use this but, now I am better prepared.

Thanks man! The fuse was the trick. Stupid little thing is well hidden. It is a 250V 10A Bussman fuse. I went to the electrical shop and purchased 3 for $2 and viola! It started right up. If you have money to burn or cant get the fuse, Grainger will ship 5 of them to you for a mere $17.

well well well this guy adrianrog deserves the noble prize, I pick up a 17.5 kw for $1000 that was sitting in someone garage for over 2 years. they use the generator once after a hurricane. They said it won't run and only start with starting fluid they had it check out and was told it need a new carburetor, a $400 job to fix. I new it wasn't nothing major since it would start and run with the starting fluid after seeing your video on the solenoid i had a feeling that was the problem. I took the solenoid out which was stuck in the close position use a little wd 40 to loosening it a few q-tips to clean inside it re-install and VOILA it fired right up...HOT DAMN I JUST CAME UP ON A PRACTICALLY NEW 17.5 KW GENERATOR FOR $1000 BUCKS...THANKS TO YOUR VIDEO YOU HELP ME OUT...now I can sell my brand new duro max duel fuel 12,000 watt generator still in the box for $1000 and try to get my money back

Thank you for your video, I didn't know there was a solenoid. Mine was bad. That fixed my problem.

Hey Man thanks a big time bunch!!! The dang fuse!!! Really do appreciate the post! You are a life saver!

Fuse was problem, THANK YOU!!

great video, really helpe

You sir saved me a lot of headache. The fuse Holy Cow! Thank you thank you thank you!

Thanks for the post. Got mine running. I ground off the plunger because it was frozen and it started right up. Should I replace it or can I just use it the way I have it now?

You are the man!!!! Thanks saved me a huge headache

You are a life saver! Thank you for putting it out there

Thank you for your video, after trying everything on my own, I decided to google my issue and found your video., I did it as described and surely it works. Big thank you.

Thank you, the 2nd issue was the trick.

I had the 17.5 kw version of this generator. It started putting out 130 , and 260 volts, instead of 120 and 240 volts. I went ahead and used it for my function, because it was not terrible high. The next day I went to start it, and it was like the battery was dead. I checked fuse behind the control panel, and it was blown. I changed it several times, and it kept blowing the fuse. It was still under warranty, and took it in. Found out it has a computer that went out. It would have been like $300 if it wasn't under warranty. I never trusted it after that and sold it

I have a 17500 that runs for about 5 seconds and then shuts off. I tried disconnecting and shorting the oil pressure sensor, and that didn't help. The carb is rebuilt. The gas is fresh. All fuel filters and fuel lines have been replaced. The shutoff valve/filter is replaced. The solenoid is clean. It starts fine every time but only runs for a few seconds. Any idea what could be causing this? Let's assume it's not a fuel problem.

Can you do a video on how to fix the solenoid problem? I have no idea how to fix it. Thank you.

Thanks! You helped

I had a problem with GP17500E that would start but would shut down after releasing the switch.I thought it might be the oil pressure switch so I disconnected the switch. It started and ran for 10 seconds and then shut down. Doing exactly the opposite of what it should do. I connected it back and it started doing the same thing. I was able to get it to start and stay running by removing the negative cable on the battery for a couple of minutes then reconnected it. I basically rebooted the control board that controls the engine shutdowns.

Thank You!! solenoid!

Adrian, I disabled the fuel solenoid, reconnected the connector, started the generator and the engine ran fine. Except that it would not output any current. This is the first time it has done that. Any suggestions? Something I missed? Thanks, Al

I had this same problem a couple years ago. I just lots of back fire. Replaced the solenoid and that fixed that issue. Fast forward to today, I have another problem. I am looking for the connectors that connects the generator to the control panel. There two of them, one green and the other grey. I can't locate the part number in the manual. Would you know where I can find them? They are 12 pins connectors.

Overall impression of this generator? I'm looking at a used one. I'm concerned about its age.

Great video. Does anyone know where I can find parts for this generator?

Thank you for a great video. I have a problem with my GP15000E. It starts with no problem but after running a couple minutes it revs up and shuts off due to over-rev. The stepper motor has been replaced. Can you offer advice on what to check next?

I disconnected the "solenoid" and my 12500 then ran. Where do you buy this part. I've searched everywhere. Were you able to find it?

New solenoid in it.

thank you it was my fuse

Good to know, THANKYOU.

did you replace the solenoid?

I have the 17500e. It cranks but won’t hit. New plugs. New diaphragm fuel pump. Plugs are dry. Which I suspect the solenoid wasn’t opening to allow fuel into the intake. I checked for voltage at the solenoid and found none. Traced the hot wire “14” to the front panel and it eventually enters the voltage regulator. Im suspecting a faulty regulator but contacted an authorized generac repair center get theory of operation. Reluctant to throw 100 bucks at a suspicion. But i think it’s accurately assessed.

good work! thanks a bunch.

I have the same Generator, it has been extensively used in South Florida for the last 10 plus years. Be very mindful about theft, three of my neighbors during Sir Hurricane Andrew in 1992. The thieves would place old, garbage lawn mowers next to generators already in use, and would simply walk off with the generator.

Thank you so much!

Where did u get the solenoid

I appreciate the video I think my solenoid is acting up. Where did you buy yours?

I found your guidance on the fuel solenoid extremely helpful! That was the issue of my fuel system not feeding fuel to the carburetor. I could bypass the fuel inlet and feed fuel directly into the chamber and it would not run. But the solenoid had become stuck and would not actuate the valve. I simple $20 purchase of a replacement solenoid solved the issue. Thank you. Do you still have your Guardian Generac 15,000 watt generator?

Awesome

Thank you! Mine wouldn't start. I removed the solenoid and it was stuck. It's a poor quality . If you need your generator running now and cant wait for parts , do this: 1) Turn of the fuel using the switch below the tank 2) Remove the panel where the choke is (4 bolts) 3) Unplug the solenoid (read and black wires in a white connector) 4) Remove the solenoid with a deep socket 5) Tap the pointed end of the solenoid. Its probably stuck. Leave it depressed in. 6) Put the solenoid back in. DO NOT RECONNECT THE SOLENOID POWER connector. 7) Put panel back on 8) Turn fuel. 9) Start generator and survive. 10) Order part. Amazon sells the part. Its $30. Search for "Generac Fuel Shut off Solenoid Part# 0E5551"

I have a surging problem with my Ultra Source 15K gas generator. Model# 004582-2. Has anybody had this problem need help.

The fuse on mine keeps melting. does anyone have a fix for that

Those problems sound bad for Generac...neither should have happened. Did the carburetor bowl have any dirt/gunk in it? I've been running the fuel out of my generator (running it till it stalls). I'm paranoid of flooding the engine/crankcase if I don't make a habit of it.

Thanks so much for this video. I didn't think to check the fuel solenoid. Totally solved my issues.