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My R34 Gtt Car Problems Thread Please Help Guys

MrRx7s3

By MrRx7s3,
in General Maintenance

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MrRx7s3 Mentor

MrRx7s3

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Posted (edited)

Hey guys first of all I'll describe my car and I'll keep this thread for all my problems instead of opening up new threads, and yes I will and have search before I ask lol.

Car is a R34 GTT

Mods:

Full 3" exhaust with a split dump and screamer pipe.

Cold Air Intake.

Turbo Smart Boost Tee at 12psi standard turbo.

Front mount intercooler.

Yellow Jacket Coil Packs.

NGK PFR8 plugs.

Apexi Power FC tuned with 211RWKW.

Exedy Heavy Duty Cushion Button Clutch with Lightened Flywheel.

I always use Royal Purple 10/40 oil and Genuine oil filter.

Fuel: Shell V-Power.

Ok so now that thats covered, I recently came up with a problem.

Sometimes when at Idle especially if I'm idling for a while or with the Aircon on I get a greyish/black smoke smells like burnt oil.

This started happening after I had a vacuum leak for a while, ended up being my PCV valve and I have since changed it and went to re-ajust the idle and turned the screw on the AAC, not sure if this has anything to do with it but I'm putting everything out there.

What could be causing the problem?

I've done a at home valve stem seal check (hold the revs to 2500rpm for 2 minutes then snap throttle and check for smoke and it was clear)

My oil is way past it's oil change time and is black and is a little more runnier, I will be changing this tomorrow and I have been thinking of changing over to Penrite Racing 10 what are your thoughts?

Performance wise everything is the same.

I do have quite abit of Shaft Play in the turbo.

Any help and advice is very much appreciated in advance, thanks.

Edited by MrRx7s3
  • 2 weeks later...
  • 3 weeks later...
MrRx7s3 Mentor

MrRx7s3

Posted
  • Author
Posted

Hey guys, quick update and a new problem.

For the smoke problem, it looks like it's solved, did a oil flush and changed the oil and it seems to have stopped now, probably had a sticky ring due to gunk/carbon build up?

New problem: Car wont idle properly and it seems as though the AAC valve isn't working.

Looked up the forum and cleaned and tried to set the idle with the AAC valve and even played with the throttle stop and still it constantly changes its idle and when I turn it on when cold the revs don't go up as they used to to let it warm up, when I turn the A/C on same thing etc, when I disconnect the 2 pin harness from the AAC solenoid nothing changes so my guess is that the AAC Solenoid is stuffed? can someone confirm this for me, also when I adjust the idle from the power FC hand controller nothing happens, how does the ecu adjust the idle is it through the AAC solenoid or something else, if it's the AAC solenoid wheres the best place I can get one from or does someone have one for sale, thanks.

  • 2 weeks later...
B-rice Mentor

B-rice

Posted
Posted

I have the same problem with the car mainly on decel and sometimes during idle. Ive broken it down to these

Valve stem seals
Turbo needing rebuilt

Worn piston seals

Thin oil

PCV valve

I started with changing the PCV and i can now decelerate without any smoke or idle. But I still do get a bit of smoke when I load it up my driveway slowly. Start with the simple things first. If i disconnect my breather hose to the turbo intake i dont get any smoke from the exhaust.

With the idle problem did you clean out your TB, there is some rubber stuff that helps it to seal and people usually scrub it off and the car wont idle well. The rubber stuff tends to look like carbon build up aswell.

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