Mechanics

WHAT IS THE REASON FOR EACH CYLINDER TO HAVE HALF THE COMPRESSION?

2004 Mazda 3 • 168,000 miles

Did a compression test on each cylinder.
the minimum is 199psi
cylinder 1: 100
2: 120
3: 125
4: 100
when I first start the car it seems to shake, sputter. After the 2nd or 3rd start it fires up runs rough than smooths out.

the only code that is showing is cylinder 2 misfire, pulled plug.
plug is normal, checked all all were good
.

another question:

where is the casting number on the head?
Avatar
Birdy
April 5, 2012.



Get a cylinder leakage test this will indicate where its leaking

Rasmataz
Apr 5, 2012.