compression test

B

bean

Guest
Did a compression test on my car

Cylinder 1 - 155psi
Cylinder 2 - 135psi
Cylinder 3 - 155psi
Cylinder 4 - 155psi

But Dave and I did find a leaky injector on cylinder number 2 (fixed now) so it could of been running lean.
 

Fast Guy

Moderators
Staff member
bean said:
Did a compression test on my car

Cylinder 1 - 155psi
Cylinder 2 - 135psi
Cylinder 3 - 155psi
Cylinder 4 - 155psi

But Dave and I did find a leaky injector on cylinder number 2 (fixed now) so it could of been running lean.
If it was leaking for a while, you could have had some petrol in your cylinder, washing the oil off the bore on start up, accelerating wear and leading to the lower compression on that cylinder.
 
B

blr123

Guest
So it looks like 8bar (118psi) is low :roll: what I didn't mention is that the car has Forged pistons but the head gasket is standard, does this make any difference :?:

Also, the young lad's car is a bit noisy cause the shimms need setting up "Big Job" :?:

Cheers Bryan
 

Fast Guy

Moderators
Staff member
blr123 said:
what I didn't mention is that the car has Forged pistons but the head gasket is standard, does this make any difference :?:
It would if they were low compression pistons, but I'm not sure how much.
 
B

blr123

Guest
Thanks Fast Guy,

They were supplied by Norris Designs if that makes any difference, I'm thinking that they possibly supply specific types ie low compresion :?:

Cheers Bryan
 
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