Hey... I was thinking. Before I put this back together... if that does fix the problem, what would the cause be? The only thing that I can think would be if compression was leaking past the rings. If that were the case, I shouldn't have such high compression (150psi), would I?
Engine Spitting Fuel Through Intake
- Thread starter rebeltaz
- Start date
Hey... I was thinking. Before I put this back together... if that does fix the problem, what would the cause be? The only thing that I can think would be if compression was leaking past the rings. If that were the case, I shouldn't have such high compression (150psi), would I?
- Joined
- Sep 24, 2017
- Threads
- 250
- Messages
- 6,441
150 is about right.
I have a 1 cylinder 9 Horse engine with a spec of 176 psi.
I have a 1 cylinder 9 Horse engine with a spec of 176 psi.
7394
Lawn Addict
- Joined
- Sep 5, 2014
- Threads
- 84
- Messages
- 4,709
Scrubcadet- Does the 9 horse have a lot of carbon in combustion area, including piston top ?
cpurvis
Lawn Addict
- Joined
- Aug 25, 2015
- Threads
- 21
- Messages
- 2,256
It can get in the crankcase through a worn exhaust valve guide.
- Joined
- Sep 24, 2017
- Threads
- 250
- Messages
- 6,441
OK... so I put everything back together, disconnected the crankcase ventilation hose and started it back up. Still got the gas spraying out the intake and running way rich.
I have checked the cam timing. There's a photo earlier in this thread that I took of that. The compression release, no... to look at that, I'm going to have to pull the camshaft out to see it. I did inject air into the cylinders, though, and I couldn't hear any leaks with the valves closed and the piston at top dead center.
cpurvis
Lawn Addict
- Joined
- Aug 25, 2015
- Threads
- 21
- Messages
- 2,256
I don't think that's a valid check of the compression release but I'm not familiar with your engine. There wouldn't be much point in a compression release still being open at TDC.