R33 S2 Gtst Troubles, Please Help D:

[Spring&WateR]

Hey fellas just wondered if anyone could help me... my skyline engine seems to be pulsing while on idle to the point of cutting out on me while im at traffic lights :S, im gonna take it into a mechanic to get it checked out does anyone know what i should look out for ? eg.. idle speed and fuel pump well thats all ive got so far... any extra things to look for much appreciated thanks

Just in addition it dose not pulse on cold start just seems to do it after a drive around abit so i guess after the engine heats up abit...

Edited December 19, 2007 by Spring&WateR

[HotPlates]

Add some octane booster and fuel injector cleaner to check if that resolves the problem. Could be your AFM or o2 sensor aswell. Sounds weird that it is cutting only after being warmed up though. What fuel are you using and what is the RON?

[Spring&WateR]

Add some octane booster and fuel injector cleaner to check if that resolves the problem. Could be your AFM or o2 sensor aswell. Sounds weird that it is cutting only after being warmed up though. What fuel are you using and what is the RON?

Hmm im kinda a newb at car stuff but im learning haha D: ....

Well i got the car back from the mechanic saying he fixed it but like after i drove it around abit the next day it started happening agian T_T im gonna take it back to him, but ill try some of the stuff you mentioned first.

I pump premium unleaded and im going to try the fuel injector cleaner tomorrow morning, what is "RON", Im sorta working on the problem with my bro in in law... hell probly know thanks ill relay this info to him should help out ! Also my cars smoking abit when i accelerate what would i check for that? ... My bro in law says its just running abit rich, does that mean i like need to get it tuned by someone ? Or is there some stuff we can do on our own first?

thanks...

Edited December 22, 2007 by Spring&WateR

[Spunky Munky]

Look mate, I don't think it's a petrol thing, but give it a go as you're learning (me too).

You should do a full petrol flush...

E.g. run 1 full tank of, say, premium 91 octane petrol, then run it to the very last drop (or lost to it when the meter shows E) - then fill it up with something like Shell's VPower 100% Octane race fuel... then see if the difference is huge? IF that, then upgrade your fuel, if no difference then it must be something else.

In my ace, for some reason my car runs it's best only on Shell's Vpower and and BP's Ultimate petrol.

Good luck - also , you car might need a full service.

[joeyjoejoejuniorshabadoo]

All skylines run best on 98 octane fuel as thats what they are tuned for. Do not ever use less as it will only lead to problems.

do you have an aftermarket bov?

Pod filter?

Whats the cold idle at?

Whats the warm idle at?

Aftermarket computer or piggy back or stock ecu?

[zebra]

Could Also be a vacume leak.

Check all the hoses that run to the intake manifold for splits/come off,

There is one that always comes off on mine, its right at the back of the plemum/intake manifold its a small (tiny) hose that runs under the brake booster and comes off the nipple or splits. that causes my car to hunt around at idle.

BTW who knows what that hose is? its runs to a little electronics box (kinda looks like a map sensor).

Hope This helps.

[WOG BOY]

i at times have the same problem as the thread starter....after a while driving i pull at the lights or break to a stop and the idle drops really low....not to cut out point tho....but yeah....i dunno either