Jump to content
SAU Community

Recommended Posts

Hey guys!!

my r33 GTS-T is running rough on idle.. its about 650-700 rpm idle.

when driving it... its doggish till about 4000rpm! still aint that great... you can here

this hissing and ticking from the turbo air being sucked ?! is that normal?

i mean its boosted @ 8-10psi atm and the guy who tuned my car to 10psi said its running pretty lean on the

bottom end of things... but got better up the graph.

when checking n regapping my spark plugs about 2,000k ago i noticed a few WHITE tipped plugs?! rest where okay.

also i have had the WRX symtom come n go randomly...

could this be coils? or a few dodgey spark plugs??? fuel??

i still get g00d Km's 'last 2x tanks have been 450km'.

but when i am booting it atm... starts kicking out smoke grey/blue/whitey, the more its booted the more grey/er it gets

i had a comp test done 2000k ago and was 170psi ish or sumfing wif maybe 5psi difference across the board!!

could i be fuel pump? injector/s? coil/s? CAS? AFM?

i mean i aint ever changed the fuel pump... and i have had the car 4#,### km

PLEASE help... its RAWR and its also backfiring sooo bad... like if 1 chamber aint denotating or sumfing...

=(

NOTE!!! and also around the first few injectors or pipes there i can here a HISSING 'LEAK'?

Edited by Mr_GaZZa

Thanks Iono's i'll check that out 2nite ...

umm Nissan had a look during my lunch break... and i just been told its spark plug / coil problem and that its miss firing

the blue/white smoke smells sweet... like fuel

=(

Thanks Iono's i'll check that out 2nite ...

umm Nissan had a look during my lunch break... and i just been told its spark plug / coil problem and that its miss firing

the blue/white smoke smells sweet... like fuel

=(

That's also possible, but generally spark plug/coil problems won't cause an issue with idle. Normally you'll only see problems under boost.

Check your pipes still first as this won't cost you a thing. How long since your plugs were changed?

sounds like a combination of a few problems.. hissing sound would be a boost leak for sure, it it's coming from around the injectors make sure the injector O rings are seated in the manifold properly, if it smells like fuel at all around there this would probably be your problem..

the "WRX symtom" is more than likely a loose or dirty plug on one of the coils, or perhaps the transistor pack (if it's a series 1) ontop of the cam cover ornament..

blue smoke is usually oil, but if it smells like fuel then you probably mean black smoke, which would indicate the engine is running rich, which also points back to a boost leak

hope i helped,

marcus :laugh:

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • @Kapr Haha yeah thats the one. I missed that you had a built up engine, I wouldn't want to run it on there either then. It was good in my situation just to replace the original turbo on a stock engine. @MBS206Yep definitely not a replacement for anything name brand
    • You are selling this? I have never bought something from marketplace...i dont know if i trust that enough. And the price is little bit "too" good...
    • https://www.facebook.com/share/19kSVAc4tc/?mibextid=wwXIfr
    • It would be well worth deciding where you want to go and what you care about. Reliability of everything in a 34 drops MASSIVELY above the 300kw mark. Keeping everything going great at beyond that value will cost ten times the $. Clutches become shit, gearboxes (and engines/bottom ends) become consumable, traction becomes crap. The good news is looking legalish/actually being legal is slighly under the 300kw mark. I would make the assumption you want to ditch the stock plenum too and want to go a front facing unit of some description due to the cross flow. Do the bends on a return flow hurt? Not really. A couple of bends do make a difference but not nearly as much in a forced induction situation. Add 1psi of boost to overcome it. Nobody has ever gone and done a track session monitoring IAT then done a different session on a different intercooler and monitored IAT to see the difference here. All of the benefits here are likely in the "My engine is a forged consumable that I drive once a year because it needs a rebuild every year which takes 9 months of the year to complete" territory. It would be well worth deciding where you want to go and what you care about with this car.
    • By "reverse flow", do you mean "return flow"? Being the IC having a return pipe back behind the bumper reo, or similar? If so... I am currently making ~250 rwkW on a Neo at ~17-18 psi. With a return flow. There's nothing to indicate that it is costing me a lot of power at this level, and I would be surprised if I could not push it harder. True, I have not measured pressure drop across it or IAT changes, but the car does not seem upset about it in any way. I won't be bothering to look into it unless it starts giving trouble or doesn't respond to boost increases when I next put it on the dyno. FWIW, it was tuned with the boost controller off, so achieving ~15-16 psi on the wastegate spring alone, and it is noticeably quicker with the boost controller on and yielding a couple of extra pounds. Hence why I think it is doing OK. So, no, I would not arbitrarily say that return flows are restrictive. Yes, they are certainly restrictive if you're aiming for higher power levels. But I also think that the happy place for a street car is <300 rwkW anyway, so I'm not going to be aiming for power levels that would require me to change the inlet pipework. My car looks very stock, even though everything is different. The turbo and inlet pipes all look stock and run in the stock locations, The airbox looks stock (apart from the inlet being opened up). The turbo looks stock, because it's in the stock location, is the stock housings and can't really be seen anyway. It makes enough power to be good to drive, but won't raise eyebrows if I ever f**k up enough for the cops to lift the bonnet.
×
×
  • Create New...