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Discussion Starter · #1 · (Edited)
I think context is needed to understand my situation. 5 or 6 months ago my 1.4 ate its orange intake manifold check valve and popped the regulator disk on top of the valve cover. When this happened there was oil pooled on top of the coil packs. In response to this I replaced the valve cover and installed an XR pcv check valve kit with a BNR throttle body spacer. The car drove fine and all was normal. Fast forward to a few weeks ago and the car starts acting strange. I first noticed that my car would act strange on cold start. it would shake and then go away no more than 20 seconds later. Then the car started to consume oil more rapidly. After that the car would pull boost if I accelerated hard and stayed on boost for a longer period of time. After it pulled boost it would blow blackish smoke if I tried to accelerate again and it would stay in this reduced boost state for a min or so then go away.

I decided to do a boost leak test. I found no boost leaks but I did find that the check valve in corrugated hose running from the turbo to the intake had a slow leak manifold so I replaced the hose. The problems persisted.

Yesterday I decided to do a compression test. the results were 190 220 180 200 PSI in order from left to right. As I was pulling the engine cover I noticed that there was oil sitting on the top of the of the coil packs again. There was also some signs of oil on the plugs altho not allot. In response to this I once again replaced the valve cover. I then knew that there was probably a reason that the diaphragm in the valve cover blowing again so, I decided to pull the intake manifold to inspect the XR PCV kit and the epoxy that was blocking the OEM check valve hole. There were no signs of leaks around the XR kit however the manifold had oil pooled in it enough to pour out and make a mess on the floor. After cleaning up the oil I tried to scrape away any loose epoxy but the epoxy still seemed firmly attached so, I just cleaned it and applied more epoxy just to make sure that there were no leaks.

Today cold starts where better It didn't shake once. However the problem with prolonged periods of boost still persisted altho, it did not take as long to recover from it. I’m thinking it's still sucking residual oil left in the charge piping. It is still too early to tell of it is still consuming oil. In this whole process the car never threw a cel, code, or go fully into “limp mode”. It never displayed service stabilitrak or anything.

Any comments or advice would be welcome. If this goes on i'm not sure what to do next.

 

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One of the most important things to know when diagnosing an automobile, is its odometer mileage.
 

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Black exhaust points to running rich.

Are you running a tune?
 

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One of the most important things to know when diagnosing an automobile, is its odometer mileage.
84000
Black exhaust points to running rich.

Are you running a tune?
Yes I,m running a bnr tune I have thought of this and I'm having the tune looked at. Just waiting on BNR to get back to me. The car has been running a tune for 6 or so months but i've never had problems with it.
 

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Since it seems better with the valve cover change, I think I'd drain the oil from the intercooler and go from there.
 
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