Comp test.. hows this look?

[GSXTuner]

Cyl 1: 160 psi
Cyl2: 150
Cyl3:175
Cyl4:175

is cyl 2 too low?

 

[Old Mitsu Tech]

Squirt a little oil in each cylinder and do a retest. Make sure the battery is fully charged and see what happens. You could have the start of something that may need addressed. If the compression comes up when you squirt oil, then it's likely rings. If it doesn't, it's likely valves.


Good Luck and let us know.

 

[GSXTuner]

i read that you should hold the throttle open when you do it.. so i did that and the new results are as follow:
175
175
162
177
... that is in reverse order 4,3,2,1.. still number 2 is low.. although within 10% of the others so.. ??

 

[Old Mitsu Tech]

You know? If it were mine I wouldn't worry about it. I'd make a note and periodically check it to make sure nothing is deteriorating without my knowledge. Enjoy what you got. I've seen them worse on here.

Good Luck

 

[stars]

According to the factory manual which this is strange because it's not close to your value they say 137 psi as being normal with a difference of +/- 14 psi max. I'd almost say this value would change depending on the drivetrain mods attached or is the block and internals still stock???

 

[dhornet]

Well, I see I'm in the right place. Before it weather started to change I noticed some wight smoke coming from my exhaust. Didn't think nothing of it ya know. It's getting cooler at night it'll go away. but it hadn't yet and frankly I'm a little worried. I'm in automotive school, and I ask my teacher to help me do a compression test and everything was 150 across the board. I'm going to do a leak-down test next to see what changes.

Oh yeah i drive a ESI not the same, but same problem.

Cyl 1: 160 psi
Cyl2: 150
Cyl3:175
Cyl4:175

is cyl 2 too low?