Tecumseh OH-160 ignition problems, HELP!
Posted August 18, 2011 - 11:22 AM
It starts and runs, at idle and low rpm it's great, but as soon as you throttle it up, it starts misfiring and too much throttle will make it quit.
I assume it's a timing issue, but I'm not sure what to do to fix it?
The missing long pin is for starting (correct?), so does it matter that it's missing?
Can too much or too little air gap cause this sort of thing?
What to do....:confuse:
Posted August 18, 2011 - 09:04 PM
do you have a timing light to see if it adjusts
Posted August 18, 2011 - 10:18 PM
I ordered replacement pins today. I guess I can see if that helps?
Posted August 18, 2011 - 10:28 PM
Posted August 20, 2011 - 04:13 PM
Posted August 20, 2011 - 04:34 PM
Posted August 20, 2011 - 05:15 PM
Are you sure it's not the spark plug? Reason I say is 2 or 3 times in the past I had the plug give those symptoms, I went nuts trying to figure it out, pulled the engine apart looking for something wrong and found the spark plug bad, when I replaced it no problem.
IMO the engine will run with 1 pin in. I think the tall pin is on the left for starting and the short one on the right advances the timing above 800 or so rpm.
If you only have the pin on the right in, that's the one for running it advances the timing and it should run fine.
The tall pin on the left makes it easier to start the engine, less kick back.
As Mikes says tall pins air gap should be .010, too tight it might touch and ground the pickup coil out???
Picture from manual for HH100 or 120s
Edited by DH1, August 20, 2011 - 05:23 PM.
- mikebramel said thank you