Pergatory
06-13-2006, 07:28 PM
So I recently got my Sileighty back from a repair shop, and suddenly it idles rough (stumbles) and spits plumes of smoke whenever I get on the accelerator. More recently, it has also been pushing a little bit of smoke out the exhaust at idle but not so much at speed. I haven't got up on the accelerator since the first time I saw it spitting smoke when I did that, but it was a LOT of smoke. Greyish maybe with a bit of blue.
For some background, I have an S13 SR20DET blacktop (from '95 180) with S15 turbo. It's running at safety boost (0.5 bar), the shop I had it at told me it was because of 2 nozzles on the passenger-side of the engine bay which have been bypassed (some sort of sensor I'm guessing?). This was done by the previous owner I guess, and I've been doing work on it since then so I haven't even had the slightest interest in resolving that issue to get it up to full boost. Odds are it was running safety for a reason and I didn't want to find out why until after I got it running well at safety boost at least. It has an SARD intake, Greddy FMIC, Greddy intake manifold, HKS downpipe, RS-R cat-back, Mine's ECU, Koyo alum rad, Flex-a-lite dual fans.
I took a look at the engine bay, and the area around my blow-off valve has a fine layer of oil around it. It's worth mentioning that my BOV is in my fender well all by itself, so the oil had to come from the BOV there's no other way it could get there. I took the intake off to get at the turbo, thinking perhaps it was dying on me. Sure enough, the pipe leading to the compressor inlet had a pool of oil in it. However, there was very little shaft play, about 1mm. I was able to move it a very slight amount, but I've heard if the bearing seals are going out it would be rather obvious... so what are your opinions? Please give me another suspect besides the turbo, I know these S15 turbos are highly sought after and won't be cheap to replace. Thanks much!
For some background, I have an S13 SR20DET blacktop (from '95 180) with S15 turbo. It's running at safety boost (0.5 bar), the shop I had it at told me it was because of 2 nozzles on the passenger-side of the engine bay which have been bypassed (some sort of sensor I'm guessing?). This was done by the previous owner I guess, and I've been doing work on it since then so I haven't even had the slightest interest in resolving that issue to get it up to full boost. Odds are it was running safety for a reason and I didn't want to find out why until after I got it running well at safety boost at least. It has an SARD intake, Greddy FMIC, Greddy intake manifold, HKS downpipe, RS-R cat-back, Mine's ECU, Koyo alum rad, Flex-a-lite dual fans.
I took a look at the engine bay, and the area around my blow-off valve has a fine layer of oil around it. It's worth mentioning that my BOV is in my fender well all by itself, so the oil had to come from the BOV there's no other way it could get there. I took the intake off to get at the turbo, thinking perhaps it was dying on me. Sure enough, the pipe leading to the compressor inlet had a pool of oil in it. However, there was very little shaft play, about 1mm. I was able to move it a very slight amount, but I've heard if the bearing seals are going out it would be rather obvious... so what are your opinions? Please give me another suspect besides the turbo, I know these S15 turbos are highly sought after and won't be cheap to replace. Thanks much!