What is 4g63T compression suppose to be?

[98TsiAWD]

I did a compression test and am just curious what psi these engine are brand new, and what is the service limit on the turbos?

 

[larryd]

160

 

[GST4U2NV]

wrong,
180 for the 95-99 with 8.5:1 compression
164 for 90-94 with 7.8:1 compression
service limit is 120 psi, and or a 20 psi difference between cylinders

 

[98TsiAWD]

Cylinder 4- 156psi 6%leakage, 2% leakage oiled
Cylinder 3- 141psi 27% leakage, 22.5% leakage oiled
Cylinder 2- 140psi 24% leakage, 16% leakage oiled
Cylinder 1- 150psi 14% leakage, 8% leakage oiled


How are these numbers? My Cylinder 3,2,and 1 have intake valves that are sticking open. I am running through some injector and valve cleaner to try to fix it. Cylinder 4 had a very minute amount of intake valve leak also however.

Is there some kind of valve cleaner I can run through the intake to clean them off?

Looking at those numbers Im thinking once I get the intake valve's to fully close I should be looking at about 158psi all the way across. I am going to retest it after I have ran the tank empty and I want to run some kind of cleaner through the intake also, so what is recommended for that?


*edit*
I drove about a mile, then the car sat for about an hour, then drove it in the garage, shut it off, put a fan on it for 10 minutes, then pulled the plugs. The temp in the spark plug holes was 125 degrees. So I did these tests at a rather low temp, but I dont wanna risk strippin my spark plug threads in the head. If I did the check at a higher operating temp I would come up with alot higher compression and less leakage right?