R33 Problems

[MY33]

hey guys,

i need a little help with a few problems with my r33.

the problems are:

Stalls when i ease off the accelerater.

Idle goes up and down.

A knocking coming from the rear of the engine.

and when i am boosting the whole car feels like its shuttering. ( when i hit 4500rpm)

Could this be the air flow sensor? or maybe some thing else?

i am taking it to a auto electrician tomorrow but just wanted to get the opinion from some of you guys.

thanks heaps

[thirtythree-II]

do you have a aftermartket BOV and/or air filter? If so these devices could be causing a few of these problems. replace with standard parts and see what happens. otherwise needs a tune.

[EMZ R33]

Id spend the $130-$150 on a full service and tune if you havent already done so. I found a few little issues like lagging and for air flow solved with a good service and a decent air filter (im using one called "uni filter"), costa about $80, running beautifully now, very smooth.

Hope this is an option for your ride, all the best.

Regards Evan

PS) Please checkout cruise for a cause post in the SA events posting page

Edited May 19, 2006 by EMZ R33

[EMZ R33]

Dude, what fuel are you using? Ive recently started to use a 10% ethanol blend of fuel and have since (second tank full) had stalling issues. Im going to start using Shell or caltex only high octane fuel. I still had about 3/4 of a tank of 10% ethanol fuel in the tank and i filled up with 98 octane and it looks, so far, to have fixed the prob.

Kind reagrds Evan

[Whiplash]

I have got a problem with the air flow sensor i think the guys at Boostworx can't quite figure it out yet. Its causing it to ping above 4500RPM.

[Nightcrawler]

EMZ R33 .... it is my (and many other forum members) opinion that both Shell and Caltex so-called Premium fuels are shite, and neither guarantee a 98 ron rating necessary for our engines to survive a decent lifespan.

I ONLY use Mobil 8000, or BP Ultimate .... other fuels that you have mentioned have given me detonation and other problems.

Also, as far as I know the 10% ethanol fuels are not suitable for RB25 unless they are specifically tuned for it (hence why you have had problems).

[J_Red33]

Check that you don't have any air leaks too make, if your engine is sucking in air that isn't going through the afm it'll be running lean as hell & will cause your hunting with the revs too.

I've got a problem with mine leaking on the vacuum line to the boost gauge sensor. I fixed it once but the hose I got wasn't good enough. Need to get some fibre reinforced hose the right size. Bloody hard to find.

I May need to try Nissan themselves, I know local delivered 200SX's use the right stuff.

[-SKYLINE-]

hey man, id check your vacuum lines from your turbo. i also had this problem. There is a hose at the front of the manafold this could have come off too, youll here a sucking of air sound!! but like ther other guys said Boost worx will rectify that!

cheers

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