steved
ArboristSite Guru
I have a 16HP twin cylinder Onan that misses sporadically, and only on one cylinder...when it runs right, its runs good.
I thought bad gas initially, but it should miss on both cylinders if that was the case. Adding fresh gas did seem to help, but when I started it tonight it missed like it did before. It backfired badly tonight, which it didn't do earlier.
We replaced the plug wires and the plugs...no change.
I'm thinking its either a coil issue (not sure why it would fire one side and not the other), or possibly a compression issue. I'm not sure what the ignition system on a Onan looks like...could be a condensor issue.
This is for my old beasty Gravely garden tractor, soon to be firewood hauler.
Thoughts?
I thought bad gas initially, but it should miss on both cylinders if that was the case. Adding fresh gas did seem to help, but when I started it tonight it missed like it did before. It backfired badly tonight, which it didn't do earlier.
We replaced the plug wires and the plugs...no change.
I'm thinking its either a coil issue (not sure why it would fire one side and not the other), or possibly a compression issue. I'm not sure what the ignition system on a Onan looks like...could be a condensor issue.
This is for my old beasty Gravely garden tractor, soon to be firewood hauler.
Thoughts?