OK, so I started noticing that I'm going through oil pretty quickly. Decided to do a compression test. I took off the injector clips and wires off and hooked up the tester and just let it crank till the needle stopped moving. Check out the pictures of spark plugs and my numbers and tell me what you think please. #'s were 180,165,175,190

 

im running a stock obd1 p72 gsr motor, stock intake manifold, tb, headers, everything is stock except an intake

 

Do a wet test, if numbers go up, you need new rings. 94

 

do a valve lash adjustment on a bone cold motor, then drive for a bit to warm it up and repeat the compression test. then do a wet test.

if numbers stay the same dry-wet, valve seals are probably leaking. if numbers go up dry-wet, rings are probably leaking.

valve lash adjusted unequally can actually have a fairly large effect on compression test numbers, hence my suggested to adjust it and do the test again. it'll give you a better idea of what's going on inside knowing lash is adjusted properly.

 

test should be done with the motor at operating temperature, and with the throttle wide open.

for what its worth, that one plug has some extra buildup on the fire ring something is likely going on there whatever it may be

 

This seems to be the most overlooked part, and will throw the results WAY off.

 

well I did the test at WOT cold/hot got the same numbers both times 210 200 200 205. My buddy said it might be the valve seals even though I had them changed when I redid the head. He said not to worry about it now because its only smoking when I floor the car and its not smoking when I am cruising or idling so... idk what do you guys think?

 

200-210 is pretty ballpark for most of the stock b16/gsr's that ive worked on over the years. how dirty is the oil. you are probably looking at a valve seal or gummed up oil control ring.

take your manifolds off and look at the valve stems through the ports. if there is black or brown gummy looking oil on the stem toward the top where it goes into the guide the seals are leaking. if they are all relatively dry the oil is possibly coming past your control rings cuz they are full of gunk

 

well I changed it only 300 miles ago and it still looks good... im keeping track of it right now to see every week how much oil is actually lost and the color of it. Dang no other way than to drop the manifold to see about these damn valve seals huh?

 

Well, you could remove the head. But that requires removing the manifold and then some.

Your compression seems good to me. The thing to note about compression tests, they don't all generate the same number. If you are in the right ballpark and the numbers are close, (<5%?) you're generally good.