jeturn
New member
Will not run although gas is getting through - changed fuel filter but machine will still not start
Will not run although gas is getting through - changed fuel filter but machine will still not start
Hiya,
Here is how I troubleshoot small 4 cycle engine starting issues:
1) crank or pullstart the engine over
2) place a cupped hand over the exhaust outlet, Do you feel a puff of air when the engine turns over?
No: Engine has a major issue, no compression, broken valve, bent valve, broken connecting rod, not looking good
Yes: Engine can be assumed to be in good enough condition to start, continue to step 3
3) cup you hand and smell the air in your hand
Smells like fresh fuel: You have either a spark or ignition timing issue.
Smells like varnish or paint thinner: you have old gasoline, clean fuel system and put in fresh gas try again
Does not smell like fuel at all: You have a fuel delivery or carb issue.
I know it's simplistic, but these engines are pretty simple. This is the technique I used when I ran a small engine repair business in my teens.
Tom
There were two runs of the 316: one in the 70's with the Kohler and one with the Onan.If you have the Kohler, you probably should start with a new set of points and condenser. Pull the spark plug. If its dry after you crank it over, then youre not getting gas. Your carb needs cleaning. if its wet, assume no spark. You should get about 12VDC on the positive terminal of the coil with the key switch on.
I had a 318 with the Onan engine and the condensers failed fairly often due to excessive heat