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When I pull that part # it’s saying that it won’t fit my 2018 Raptor … seems like it should be the same seat. By chance do you know?

I think I have this in my 2014, but can’t find a part for a 2014, would the 2015-2020 part work?

Would relacing a RC14YC spark plug with a RC12YC be ok? Just wondering if that would help starting and eliminate too many cranks. Need to know ASAP. Thanks

What if you just take out that part, and leave it out?

Do you have the part number for this

Thanks for posting as I have the same issue and it has been driving me nuts. This video will help me resolve!

Brilliant video!! I have the 8kw air cooled unit and I have the same exact issues. A couple years ago I swapped in an aftermarket starter which did not solve the issue. I have confirmed my battery is good with a battery tester. I have tried to start the unit with a higher CCA rated battery from my car and same issue. I am going to check my valves and adjust them as needed. Thanks so much for making this video!!!!

Great video, helped my out tremendously with my 2016 F-150.

Hey this is great , same model only my starter went out , gave it a heavy TAP and heard grinding before RPM sensor popped on but I will adjust Valve after your experience

I have a Generac 8kw that looks exactly like yours. Just purchased my house a few months ago and the Generac was cycle running once per week. Now I noticed that I haven't heard it turn on at all, so I checked it out and the RPM Sensor Loss light was on. I'll have to go through the processes you explained starting with the battery and then go from there. Also, is there a need to reset anything after disconnecting the battery? I know on some Generac's, you have to go through a reset process. Another question I have is, when you turn it on manually, should the house main breaker be turned off first. This is all new to me and I was told many different things that if you start the Generac without turning off the house main breakers you can cause damage to the house, the Generac, etc. Anyone that can expand on this, as well as the RPM Sensor Loss light coming on, I would appreciate it - Thanks in advance!

How many times can one say …….ummm in one video.

Thank you The valve lash adjustment did the trick. The engine now starts up right away and runs smoothly.

Three years later and this video is still getting people! Thank you, I started by replacing the battery, and still had RPM SENSE LOSS. I was able to get it running by freeing up the starter motor, it seemed to be stuck in place. If problems persist I'm going to follow all of your steps and watch the adjustment video if needed.

Great video. I am having the same problem with my 8kw Generac. Battery tested good, also started one of my cars with it. No voltage drop through the contactor. Starter spins when off engine, but won't power through compression stroke. Pulled spark plug and no binding through several rotations. But checked valve adjustment anyway, there was just under .001 clearance, so I made the adjustment to .003. So your video was a benefit because it helped me rule out the valve clearance.

Sounds like what mine is doing. Except when I got there there was more oil under the generator than normal, when I tried to start it after checking the oil, it made a grinding noise when it cranked for just a second then it never cranked again. Just a clank and no crank.

Wow. You just saved me close to $400. Thanks for taking the time to post this video and explain the issue. My generator experienced exactly the same issue - "Inspect Battery", "RPM Sense Loss", clicking. I replaced the battery and has the same symptom. Puzzled, I started researching and ran across your video. I removed the fan guard and attempted to turn the shaft (clockwise) and sure enough...parts of the cycle were restricted. The clearances were way off on 3 of the 4 valves. (I'll start checking these clearances with oil changes like I should have all along...) Also, my generator is a 17KW #5873 - so this process likely applies to a wide range.

I have a propane 8kw acting up. Same problems. Just recently. The guy that was servicing it retired. He replaced the coil a couple years ago and it was good for a while but I have a question. That intake tube. Did you replace that with something aftermarket?

Thanks so much for posting this. I bought a 2018 f150 and noticed this noise on my drive home.

I have a question did you know that when you're cranking that flywheel by hand that when you hit the compression stroke it will get very hard and you will not be able to do it and you may not be able to hold it on top dead center did you also know they're on the other part of the stroke cuz the Piston comes up once for the exhaust back down for the intake up for the compression then the ignition that's where you get the compression stroke that when it's on exhaust stroke the valves are very tight you shouldn't be too tight but they are tight I hope you adjusted that right and didn't teach everybody unadjust their valves I would say I don't know what to call it by the way the contactor is also known as a solenoid in the automotive world and generator world just FYI I hope you have a great day I'm glad your generator is working very well the valves were probably your problem they were probably miss adjusted they're supposed to be adjusted every so many hours great job

Anybody can help me with this problem? Our generator wont go into Auto Mode. Every time I press the Auto button, it goes to Manual mode and start the machine. I tried to re-hard wiring method, didnt work. Thank you!

Was the difficulty turning over because of a compression release not functioning because of the valve adjustment being off?

One possible tip for other people with this generator or similar models, if it won’t start ,try taking the fuses out, let it sit for a minute then put them back in. I have an 8.5 kW Generac, Gen.one, been running for at least 15 years, anyway mine was having A real hard time starting and wasn’t able to start on its own, for the weekly exercise. I tried using the manual switch and it just seems like it would try to start but wouldn’t, I could tell that the battery was giving it enough juice to start and the starter was trying but it just would not kick over. After 30 minutes of screwing around with it I decided to take both fuses out and just put the continuity tester on them. After putting them back in the generator it started like a champ, so I don’t know if it’s kind of like a computer, And needed a reboot but I just wanted to put this tip on there for any other people with a similar model, if all else fails, just cut all the power to it for about 30 seconds to a minute and then put your fuses back in mine started right up and has done it several times since. Also great video there aren’t many videos out there about how to fix these models for a DIYer or average home user who can’t get service for weeks, but wants to be able to try something on our own in the meantime.

Ignition coil

Thanks for your help!! Your explanation was clear and concise.

FYI model no. shown at 8:00 min mark and what he did to fix it (valve adj.) isn't shown :(

My 8000genrac starts runs for a few seconds then dies can u suggest what may be wrong

The flywheel should not be FREE to turn 360. It called the compression stroke! If you dont know how it works good idea not to make blind adj.

Gracias for the video, I had a customer in my city with the same issue, I already told him to change the battery 13V for a new one (It had a voltage drop), we already changed spark plugs (They were rusty) and finally the starter would be the problem (We havent checked the contactors). best regards

Hey. Thanks so much for this video! I have the same generator with a very similar issue. Do you have any information on changing the starter? This is my next step, thanks!

Thanks for posting this. I've had my 8KW serviced by the local Generac outfit several times because of this problem, and now it's back. Not only doesn't it crank long enough to have a chance to start, it doesn't crank at all. When I try to start it, there's a loud 'clunk' sound, which is very much like the sound a starter solenoid makes when a car battery is dead; is that the sound that yours made?

I been having sensor loss issues. Thank you very much for posting this!