after 15 revolution 100 psi dry and 150 psi wet in 7 revolution.

 

That sounds most likely to be blown rings. Its only supposed to go up a little with oil, not 50 psi. Did you add the right amount of oil, like a cap each cylinder? Too much oil and it could be artificially inflated (doesnt sound like its the case, just letting you know)

 

it's got to be bad rings when the psi jumps up that much. Maybe it was running around overly rich for a long time or just had bad oil in it. Hard to say but I think it may be time to have the engine freshened up. Might be a good opportunity to put a buschur 2.0 or 2.3 in there

 

Thats what we figured but wasnt sure. Thanks Chris. About that buschar 2.0 or 2.3 I dont know, maybe only if i had a tree that grew money lol..

 

I wonder how much blood plasma is going for these days

 

any chance your equipment is off a bit?

 

Mivec engines always have low compression numbers due to the cam timing during cranking. The cam profile is not active until the car is running. In addition it needs oil pressure to operate correctly.

Just throwing that out there. You should post your number as stated above.

 

+1... IX's read lower compression than 8's but like eb66 said, 50 psi difference from dry/wet testing is not good. Do a leak down test.

 

I didn't catch that ^ Sometimes if you use too much oil during the wet test it will considerably raise the compression.

 

I was going to say head gasket, but once you posted the diference with the oil I say piston rings. Is your car burnig oil? And check all the sparkplugs for color they always tell the truth.

 

As stated before, a leak down is the best way to figure out what is going on.