Compression test
- Thread starter buzzurd
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Mike1970
Well-Known Member
1, take out plug
2, put finger over hole
3, pull string
if there is compression, it'll try and blow your finger out of the way, if there is no compression - it won't.
2, put finger over hole
3, pull string
if there is compression, it'll try and blow your finger out of the way, if there is no compression - it won't.
use compression gauge from a lawn mower shop. They just have a rubber seal on the end and you hold them firmly in the plug hole. then pull the rope.
The gauge is more accurate than my finger. The gauge on my finger sticks and doesn't give correct readings.
The gauge is more accurate than my finger. The gauge on my finger sticks and doesn't give correct readings.
46u
Well-Known Member
I do not know what motor you have but on most stock motors you want 80 to 100 psi. When doing the test make sure you have the throttle wide open and the choke off.