Blowing Black Flakes, Need Help Asap

[Vengy]

Basically as the title reads, was blowing abit of smoke under boost before but now blows smoke just idleing, and just recently started blowing a constant display of black flakes.

I've changed the oil, oil filter, fuel filter, o2 sonsor, flushed the cooling system, changed the spark plugs, cleaned out the AFM with the correct AFM cleaner and now running out of ideas, so if anyone can help that would be greatly appreciated, I've also had the ECU checked and came back with no errors or problems, it is running rich but both I and the mechanics are unsure why.

Mods

- r33 actuator

- splitfire coilpacks

- greddy boost controller (running 10psi)

- R32 Gtr front mount intercooler

- full 3.5" cat back Exhaust with hi flow cat and random jap cannon

- cold start bi-passed

- pod filter

- z32 AFM

[Dobz]

Stock turbo? Sounds like the turbo seal is possibly leaking. The unburnt fuel from being rich sticks to the oil and forms a crusty coat in the exhaust and it'll start to crumble off when it gets built up enough.

[Vengy]

Yes stock turbo, could that also cause the oil to blacken quicky? When I drained the oil it was as black as ever, and was only 2 months old since last oil change.

I'm also experiencing a big lack in power and terrible fuel economy If that helps narrow it down to the turbo (forgive my lack of knowledge)

[mad082]

the blowing of smoke means the turbo has seen better days.

as for the flakes, as was said above. could also be that the cat converter is starting to break up.

[Vengy]

I've got a spare turbo which appears to be in good condition, no play etc, I'll swap them over and see how it goes.

Thanks for the help guys.

[KEBAB_DRIFTER]

Z32 on stock computer?

[DVS JEZ]

Good question^^

what ecu?

[bubba]

+11ty to above and have you checked all the cooler pipe connections?

[Vengy]

Sorry been running around trying to get another turbo, the spare I had was the original stock r32 turbo, the turbo that it was running was alittle bit different, I believe to be an r33 turbo maybe? Code on the front of the compressor housing reads "16v 8", fluid lines and bolts are larger and drain pipe came off on a different angle, can anyone confirm this?

It's running a nistune ECU...

[10 4]

I'd do what Marc said - check the cat.

Edited August 23, 2011 by 10 4