Burning Oil

[95TalonOwner]

So lately I have been noticing some smoke coming out of my exhaust and that I am burning oil. I checked the compression yesterday and I got between 215-225 accross the board.

What are good compression numbers for the 420A and if mine are good, could I possibly have one or a couple valve seals that are bad? It lets out a decent amount of smoke only sometimes, I have noticed that it is mainly when I downshift to a red light.

I would like to know what it could be so I can replace it before I go turbo very soon. I though maybe it was my rings but now those numbers make me think it could be a valve seal.

Also, what are the best plugs to use in the 420A and 420A turbo applications? I know to 4g63 is NGK BPR6ES gapped and .028-.030.

Any help is appreciated.

 

[DSMcrazy3]

Valve seals.

Those compression numbers are as close to perfect as I've seen. A leak down test will provide more in depth results and help pinpoint the exact location of the problem. Although, I'm nearly certain it's your seals.

 

[Blitzeclips]

Those are VERY good numbers for your car. Did you have a leak down test done as well or no?

As far as the oil goes, have you checked your gaskets lately?

 

[95TalonOwner]

I did not have a leak down test done and I really don't know what condition any gaskets are in except the exhaust gasket since that was replaced when I got a header. The engine is completely stock besides a CAI and header with 147xxx miles.

Which gaskets are key to check and can anyone answer my spark plugs question?

I guess it's time to look up how to do a leak down test.

 

[DSMcrazy3]

Spark plugs...NGK BKR7E Gap: .35

 

[dr1665]

I concur on the leakdown and suspicion of valve seals. Typical compression numbers tend to run in the 180-200 range on the older, healthier 2GNTs. If the smoke is mostly out to play during extended periods of idling - gridlock traffic, drive thrus, etc. - then it's likely valve seals.

 

[95TalonOwner]

Thanks for all the help guys. Now I just need to get my hands on a leak down gauge.