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Old 10-21-2012, 10:56 PM   #1
Scooby Newbie
Member#: 264205
Join Date: Nov 2010
Location: Albany NY
2000 swapped RS

Default My new built EJ205 all of a sudden starts pouring out smoke.

The car is a 00 RS with an 04 WRX swap. The motor is a brand new rebuild w/ like 1500 miles on it.

I had the car tuned 3 days ago and since then everything had been fine. Decided to go for a drive today and everything was still fine until I noticed that the car started pouring blue smoke out the tail pipe. Not all the time but mostly just when you let it idle for a while like sitting at a light and then took off, huge cloud. Over the course of the day it has gotten worse until when I got home it was to the point that there was a steady blue cloud pouring out the back.

There weren't any drivability issues, stills pulls really hard and runs great so I wasnt sure what the cause was, it still starts right up even. I checked the oil as soon as I got back, it was down a quart, granted I did about 5 hours of driving today, and started to head the about 2 hours home after I noticed it was smoking but that's still alot to lose in that short of a time.

I started checking stuff fearing the worst. First off I pulled the intercooler to see if the turbo seal blew out, only a light film in there and the turbo is totally dry inside so not that. Then I thought maybe a cracked ringland or something, so I did a compression test. Cyl 1,2 and 4 were all 160-165 psi and the plugs were perfectly clean. Once I got to 3 I knew something was up since the plug was all sooty. But to my surprise I didn't get a low reading, it was actually really high, 178. I guess that can be attributed to carbon buildup on the piston.

Well now that at least i'm pretty sure all the major stuff with the engine is fine, I have to figure out what actually caused this. I didnt have time to check today since I'm too tired to screw with it any more right now but the only thing I can come up with is that maybe one of the intake valve seals fell off or went bad somehow. I cant think of anything else that would cause me to not have low compression yet still consuming oil on only one cylinder. All the major things that cause smoking and oil consumption on a single cylinder, headgasket, cracked piston, cracked head all cause low compression so i'd imagine it would have to be be outside the combustion chamber.

I'm going to take the intake off tomorrow to have a better look but is there anything else I should be checking for?
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Old 10-22-2012, 06:31 AM   #2
Scooby Specialist
Member#: 272096
Join Date: Jan 2011
Chapter/Region: BAIC
Location: Nevada
2002 6Speed swap wrx
Function Warrior!!


Might be head gaskets.
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