Justin1997GT

After my car warms up it starts to smoke bad even worst when i give it throttle. Could this be rings or valve seals?

cliffyk

Could be both, however typically smoking on acceleration is a piston ring issue...

Performing a dry, then wet, compression test will tell you...

Justin1997GT

What do you mean by wet and dry.

cliffyk

A dry compression test consists of pulling all the plugs, propping the TB open, and checking the compression of each cylinder.

The wet test is done by injecting a couple teaspoons or so of oil into each cylinder and then checking to compression again. The oil will temporarily seal the rings and if the compression reading increases you can be pretty sure the rings are shot--if it doesn't then it's a valve seating problem...

fisher2985

wont the non pi's bad for valve stem seal problems.??

cliffyk

Yes, 12+ year old cars have all sorts of problems...

Justin1997GT

thank i am going take it to a garage and have them pull the heads then take them to a speed shop that's near by to have fixed. I will also have them do the compression tests. It just sucks i just bought the car and it has a crap load of aftermarket stuff on it. I just hope it is the valve seals because it still runs good.

cliffyk

How many miles on it?

Bad valve seals generally smoke worse on deceleration, when the higher manifold vacuum pulls oil down through the bad seal...

JC316

I say rings. Usually when it's the valve stem seals, it smokes real bad at startup from where they leaked down.

Justin1997GT

it has 133,xxx but i don't know if it's the original engine.