Since this is the forum w/ the Harbor Freight genny thread, I figgered I'd put this here. Mods, feel free to move.
Getting my 16 year old Cummins Onan 2.8 KW w/ 900 hours back into shape. It's in the spare tire well space of my Class B RV, and hasn't run in over a year. My local RV dealer would charge me $100 to change the oil, so I just blew it off and didn't run it.
Took it over to a friend that has an oil pump. Drained the oil, pumped it full of a quart of SAE 30 and topped off w/ Marvel Mystery Oil, and then had to drain a bit b/c we overfilled it.
Wouldn't start. Sprayed the air cleaner down w/ starting fluid, nope. Pulled the spark plug wire & it sparks to the bumper. Pulled the spark plug - black.
AutoZone has the exact replacement, we throw it in, no start. We pull it out, it sparks, and we get gasoline vapor out of the cylinder. Plug goes back in - no start.
I get home, and realize the only starting method I didn't try was w/ the engine running, instead of trying to start off the house battery (pair). I try that - it pops a few times, but no start.
Ideas?