Hey ht this is kinda dumb lol but I'm about to do a compression test on my b18b1 how many psi am I looking for 180+? Also, it smokes a little on start up and when I slightly take off, but anything after that it's good. Valve seals? And yeah how many psi am I looking for when doing compression test? Thanks

 

Just do the test. Report back what you get.

 

150 135 135 150

 

Found this on the net for your reference.

(nominal= good)
(minimum= anything below this and you need to start worrying)
(max var: maximum variation between cylinders. ie Cyl 1=190, cyl 2=150, you have a problem)

Gen 1
86-89 d16a1
nominal: 192 psi
minimum: 134 psi
max var: 28 psi

Gen 2
90-91 b18a
nominal 185 psi
minimum: 135 psi
max var: 28 psi

92-93 b18a1
nominal: 199 psi
minimum: 135 psi
max var: 28 psi

92-93 b17a
nominal: 199 psi
minimum: 135 psi
max var: 28 psi

gen 3
94-01 b18b1
nominal: 199 psi
minimum: 135 psi
max var: 28 psi

94-01 b18c1
nominal: 270 psi
minimum: 135 psi
max var: 28 psi

97-01 b18c5
nominal: 270 psi
minimum: 135 psi
max var: 28 psi

gen 4
02+ k20a3
nominal: (?)
minimum: 135 psi
max var: 28 psi

02+ k20a2
nominal: (?)
minimum: 135 psi
max var: 28 psi

 

The absolute number is highly dependent on the compression tester, engine temperature, etc. The consistency of the readings is not.

OP, adjust your valves and retest.

 

Engine was at operation temp. And do a valve lash adjustment? And see if it smokes still and see if compression is better?

 

and you're testing at WOT,yes?
what color is the smoke?
the lower compression in 2 adjacent cylinders is synonymous with a breached headgasket due to a warped/cracked head.
try running a wet compression test. see how the numbers differ from the dry

 

Blue smoke. And are you saying I might have a warped head?

 

And no just crank not pedal wide open

 

test with pedal at wot. this keeps the pcm from fueling and washing the cylinders

 

question for you i did a compression test and i got 90-90-60-65

 

This thread is 13 years old. You have to look at the dates before you post in an old thread. Usually, you start a new thread for your problem.

Your motor is low on compression and needs a rebuild or replacement. You can try doing valve lash, but I mean, look at the numbers posted in the thread above, you're under the minimums by a good amount. Not to mention a variation of 30psi, outside spec there too. Kinda obvious.

 

Does your engine run ? If it does... you did the test wrong. If not, those numbers are ALL too low for combustion, so you would need a rebuild.