Ok I have put 750 miles on my car as of today. I changed the oil 200 miles age with castrol 20w-50. But I am just having problems.



At about 500 miles I was driving, someone swearved from a side rode and came 2 inches from hitting me. I nailed the gas, hit and held 5.5psi of boost. I had been boosting for about the past 200 miles and the motor was running awsome. Nothing over 3 psi though. My car started to smoke blue/thick clouds of white oily smoke from this point on. It smokes when I start it and it smokes whenever I hit boost. The car now hesitates badly at the 3.5k secondary injector turn on and at about -10hg of vacume. I have brand new re ran grounds, and I yanked my intercooler pipes and found oil. I also found oil dripping from the DP gasket, and around the cartridge of the turbo.

This really frys me, I bought this turbo off a low miliage jspec, and paid damn well for it. It was leaking a bit of oil before my rebuild, just enough to smoke at really high revs. Well I think the Apex seal being tossed through the hotside did it in. It still has the same shaft play from the day I bought it so :-\. It will boost and hold it just fine, it just smokes.

I have a new S5 turbo on the way along with my cleaned 680 GSLSE injectors so I am hoping this will help with the hesitation.



Other then whats already mentioned, I am having just the oddest oil pressure issues. At a warm 750 rough idle I hold 30psi, at about 3k, it jumps to 60+ psi, and above 4k, its at 110psi!!! I dont know what to think. What would cause this? Could this have caused damage to my turbo?

Thanks .

 

I yanked the turbo today and found oil leaking from the turbo, into the intake, through the throttle body, and into the runners. However I also noticed that my front rotors exhaust port was black. My rears was white/brownish. It was not oily, just black and dry. What could cause this?

 

[quote name='the spyder' date='Mar 20 2005, 04:43 PM']I yanked the turbo today and found oil leaking from the turbo, into the intake, through the throttle body, and into the runners. However I also noticed that my front rotors exhaust port was black. My rears was white/brownish. It was not oily, just black and dry. What could cause this?


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this usually means that ...that specific rotor is lean or its leaking water (both rotor exhust port should be the same color) try to turn over the engine with a 19 socket and ratchet to see if there is bit of water in the combusting chamber. if not then you must have one injector not working correcty

 

Well I yanked the plugs, 2 weeks ago and 200 miles ago they were brown/lean. Today both the leading and trailing plugs are black and oily. I looked at the exhaust ports again and I dont think theres anything to worrie about.



I will replace the turbo and see what happens.



But I do think you may be correct I have a injector not working correctly, I will test them and see whats happening. Ofcourse I am running a monster street port on stock injectors for up to this point... . That will chage really soon.

 

Driving arround like a grandma is horrible for your engine. It packs everything with carbon.



I saw the inside of a newly rebuild engine of someone who was "breaking in" thier car and it was full of carbon.



As long as your engine is clearenced I say boost away. Just dont sit there and bounce off the redline.

 

I'd say 110psi has something to do with your turbo leaking oil.

 

Check your oil drain line from the turbo if it is blocked or kinked your oil has no place to go but out the seals!

 

My PCV system was clogged and causing the oil system to pressurize. I tore out the offending hose and now its running great. The oil system lines are all clean and free flowing, but I think I know what happened. I got my oil pressure sendor soaked in simple green inside and out, so I will pull one off my parts car and see if it changes.

 

[quote name='GMON' date='Mar 21 2005, 09:20 AM']. Just dont sit there and bounce off the redline.


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bouncing off the rev limiter can be very bad. hitting it is ok, but dont leave it there!