Bad rings or something else?

[14of2000]

Hey guys,

So trying to figure our exactly what's going on with my car. When I drive my car and get into boost, I let off the gas a puff of smoke comes out of the exhaust for about 2 to 5 seconds then goes away. If I drive it and don't boost it, it does not smoke at all. I did a compression test and the numbers were 150 139 105 130 so kinda all over the place.

I pulled my turbo and exhaust manifold and I found oil leaking from the #1 exhaust port, it looks to me like it's coming from the valve up top. So I could be valve stem seals. However that would not make my compression numbers what they are. I also did a leak down test on cylinder 1 and air is coming out of the valve cover. I have also checked timing and it's dead on. There is zero oil in my exhaust housing as well, so I don't think the smoke is coming from that. Any other ideas on what you think it might be? I'm stumped at this point.

 

[MellowVR4]

throw some oil into the cylinders and redo the test.

 

[coyotes]

seems like bad valve seals to me.

 

[prove_it]

Aw that sucky. Looks like it's time for a forged bottom end....Don't worry I will work for turbos... /ubbthreads/images/graemlins/grin.gif

 

[14of2000]

Quoting MellowVR4:
throw some oil into the cylinders and redo the test.



I did that and added a good amount, it didn't raise it. Then for the hell of it I put more in and it bumped it up 20 psi. Haha Ryan, I knew you were gonna say something like that! That might be my only option right now, IF it's the bottom end.

 

[prove_it]

}:d 9.5:1 compression and e85..... /ubbthreads/images/graemlins/devil.gif

 

[14of2000]

Oh I agree your car would haul ass with that turbo! But I guess I gotta do what I gotta do to get my car back up and running again lol

 

[diambo4life]

Yup...the variance alone is enough to do a minor rebuild. Depending on your power goals you could do a simple re-ring with new rings and a top gasket set or build something more serious. Be cautious. It's easy to get carried away and overbuild while spending tons of money.

 

[gaylantvr4]

i would perform a leak down test to check the valves. I would put money on the valves not sealing

 

[14of2000]

Ok so today I took my cams out, and this is what I found. Also the valve guide looks to be trash, because I can wiggle it about a 1/2mm from side to side.

 

[prove_it]

Sweet, head job! I love head jobs...