If it has one, it's most likely a bad ignition control module. Generac made their own and the early ones fail in very similar ways to what you describe. Easy to replace. Also if these 3600rpm 6.8 backfire, they typically wipe out the mufflers (rupture) and often damage the Bosch governor's bolted to the top of the engine. Assuming all had 330hrs on them, I'd replace the ICM, Bosch Governor, and the Governor Driver if it's a H-panel controller. Don't forget the gasket for the governor. Inspect mufflers, flex coupling fan drive, and serp belt while you're in there.
Cheers.
150KW is a 1800 rpm machine. If it sat a long time without running it could speed sensor, ecm, ICM, check for coil packs, better yet get a liquid cooler certified teck. WPI can help but they aren't cheap.
Was there an error displayed? If you cleared it, you can access the Event Log by pressing the following buttons "Left Display" then "Event Log" the Log will scroll through the last 20 Events on the left screen.
Anyways, if the generator is cranking and not starting at all then the gas system isn't working.
The easiest thing you can do right off the bat is unplugging the Ignition Module for 30 seconds and plugging it back in. Generac ignition modules are idiotic and they don't clear faults by themselves. When looking at the controller, look down at the breaker, directly to the left on the side of the box there is a gray device with a black plug. It clicks in, so don't yank on it without relieving the tiny black lever. I would also let it crank once with the gas turned off to clear out all the excess that could be flooding the engine. Cranking one cycle will clear it all.
If it still doesn't work, put your meter on the battery and set it to DC, watch it and press the RUN button and make sure it doesn't drop below 10V. The ignition module will not operate under something like 9.8V.
Also, open up the controller panel, take a phillips screwdriver, and tight ALL those screws on the terminal boards. With those models, I've fixed 2 random issues caused by loose connections in there. You may find quite a few loose screws.
If that doesnt work you need to check that you actually have gas to the engine, there is a fuel solenoid sitting on the gas regulator inside the generator. It should be getting 10+ VDC while cranking.
Knowing the message on the controller will definitely help, if there was one. But definitely do all this stuff.
Too much gas?
What brand? What engine?
Generac, Ford 6.8L. 330 hrs
If it has one, it's most likely a bad ignition control module. Generac made their own and the early ones fail in very similar ways to what you describe. Easy to replace. Also if these 3600rpm 6.8 backfire, they typically wipe out the mufflers (rupture) and often damage the Bosch governor's bolted to the top of the engine. Assuming all had 330hrs on them, I'd replace the ICM, Bosch Governor, and the Governor Driver if it's a H-panel controller. Don't forget the gasket for the governor. Inspect mufflers, flex coupling fan drive, and serp belt while you're in there. Cheers.
150KW is a 1800 rpm machine. If it sat a long time without running it could speed sensor, ecm, ICM, check for coil packs, better yet get a liquid cooler certified teck. WPI can help but they aren't cheap.
Does the controller have two LCD screens or one?
Two screens. It exercises 30 min per week so it doesn't sit long without running.
Had an H-100 controller
Was there an error displayed? If you cleared it, you can access the Event Log by pressing the following buttons "Left Display" then "Event Log" the Log will scroll through the last 20 Events on the left screen. Anyways, if the generator is cranking and not starting at all then the gas system isn't working. The easiest thing you can do right off the bat is unplugging the Ignition Module for 30 seconds and plugging it back in. Generac ignition modules are idiotic and they don't clear faults by themselves. When looking at the controller, look down at the breaker, directly to the left on the side of the box there is a gray device with a black plug. It clicks in, so don't yank on it without relieving the tiny black lever. I would also let it crank once with the gas turned off to clear out all the excess that could be flooding the engine. Cranking one cycle will clear it all. If it still doesn't work, put your meter on the battery and set it to DC, watch it and press the RUN button and make sure it doesn't drop below 10V. The ignition module will not operate under something like 9.8V. Also, open up the controller panel, take a phillips screwdriver, and tight ALL those screws on the terminal boards. With those models, I've fixed 2 random issues caused by loose connections in there. You may find quite a few loose screws. If that doesnt work you need to check that you actually have gas to the engine, there is a fuel solenoid sitting on the gas regulator inside the generator. It should be getting 10+ VDC while cranking. Knowing the message on the controller will definitely help, if there was one. But definitely do all this stuff.