Low compression?

Status
Not open for further replies.

brokenvespa

New Member
Local time
4:31 AM
Joined
May 9, 2016
Messages
1
Hi guys, I am looking for more power. I just used a compression gauge on my bike and it is only reading 40psi. The bike runs and with a 38t sprocket tops out at 25 mph. I have read that stock compression is around 90 lbs. Is it even possible the enginevitable will run at 40psi? I got this bike used and was told that the engine only a couple of tanks of gas run through it , so should be fairly new.
 
Maybe your gauge is wrong or is leaking that seems very low u need 3 things for combustion fuel fire and compression
 
And air.
And proper carburetion of that fuel and air.
But if it really isn't possible to run at all with 40psi compression then the test must be going wrong...
 
are you holding throttle open and turning motor until the gauge stops going up?
 
Status
Not open for further replies.
Back
Top