pressure testing causes oil burning

[nazthug]

ive noticed that everytime i pressure test my car for leaks, when im all done, and start the car up, for about 5 minutes, everytime i give it even a little gas, it blows blue smoke, pretty bad

yesterday when i tested it with compressed air, so it pressurized it alot, man, i was blowing blue smoke driving all the way home for like 10 minutes, and it finally went away completely, and is totaly fine now


what does this mean? Where is it allowing oil to escape into the engine? IS this a source of a leak somewhere?

 

[Thomas91169]

how much did you pressurize it?

i usually only put the same amount of pressure as the amount of boost i run, which is 20psi. usually need 2 people to do a leak test, 1 to watch the boost gauge and the other to do the pressurizing.

 

[oldman]

ive noticed that everytime i pressure test my car for leaks, when im all done, and start the car up, for about 5 minutes, everytime i give it even a little gas, it blows blue smoke, pretty bad

yesterday when i tested it with compressed air, so it pressurized it alot, man, i was blowing blue smoke driving all the way home for like 10 minutes, and it finally went away completely, and is totaly fine now


what does this mean? Where is it allowing oil to escape into the engine? IS this a source of a leak somewhere?

Well, I'm suspecting you never finished the leak test. (holding 20 psi reasonable) oil can get out of the crank case in several ways.

1. Turbo seal.
2. pcv valve.
3. Valve seals.
4. Piston rings.

This means during the pressure test, you should be loosing air into the crank case pretty quickly. If this is true, repeat the test with the oil cap open and see if you hear anything inside. Post back result.