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Valve seals?

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fallenauthority

15+ Year Contributor
692
11
Oct 14, 2004
La Plata, Maryland
Ok well ive been having this horrible smoking problem which i have been trying to track down for a couple weeks. The turbo was bad, i replaced it, still smoked, replaced a few little things like pcv valve and ran some "Restore" through my motor, and also tried some Bar's Headgasket Repair, and its still smoking like a banshee, even at idle, while boosting after boost, u name it its smoking. A friends dad told me its my valve seals, he said they are probably totally shot. Could this be my problem? BTW It is also burning oil like no tomorrow. I never knew valve seals could cause this much smoke. Thanks, please guys help me on this I need to know like a.s.a.p.
 
buring oil is most likely due to seals, and the O-rings on the pistons. also are you loosing any boost, that is a good way to tell that your valve seals might be taking a dive. good luck man. :thumb:
 
fallenauthority said:
Ok well ive been having this horrible smoking problem which i have been trying to track down for a couple weeks. The turbo was bad, i replaced it, still smoked, replaced a few little things like pcv valve and ran some "Restore" through my motor, and also tried some Bar's Headgasket Repair, and its still smoking like a banshee, even at idle, while boosting after boost, u name it its smoking. A friends dad told me its my valve seals, he said they are probably totally shot. Could this be my problem? BTW It is also burning oil like no tomorrow. I never knew valve seals could cause this much smoke. Thanks, please guys help me on this I need to know like a.s.a.p.


Your rings are probably bad, and leaking oil that is getting burned out the back..

is it a bluish tinted smoke/bloack smoke white smoke?

You could try replacing the the little seals around the valves first before going in and doing rings... my best guess without any more info is the Ring's though.
 
fallenauthority said:
My compression is great , 190 190 185 185, yes i am currently only able to max out at 5 psi boost, so valve seals you think?


That doesn't seem right. The VFAQ says that factory compression is 178:

Code:
2G (95-99) T/E
 2.0L NT 420A engine  2.0L 4G63 Turbo engine  2.4L NT Spyder engine
 
Compression ratio
 9.6:1                         8.5:1                             9.5:1
 
Standard compression
 170-225 psi                 178 psi                          192 psi
 
Service limit
 100 psi                      133 psi                          146 psi
:talon:
 
It is probably carbon on top of the pistons and on the head. making a smaller space in the combustion chamber which is making higher compression, i have just been to scared to take seafoam through the motor because of all the smoking i want to get it fixed first.
 
help please, this is getting so annoying, i am going to start replacing the valve seals tonight. But I want to know if this is actually my problem, the car usually behaves itself in the morning on the way to school like yesterday on my way to school it didnt smoke, on the way home from school it didnt smoke, but on my way to work yesterday it did, my work is like 5 miles away, it smoked at stoplights, while cruisng and i didnt dare try to boost it. This morning it didnt smoke either. when im not boosting it its not a real heavy smoke but it is quite a lot that is very noticeable behind me. its bluish smoke and smells like oil. When i boost it it smokes really bad, do you think my new turbo took a dump on me or is it probably my valve seals?
 
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