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R33 Gts25T Popping Under Hard Acceleration


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  • LR33
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Hi all.

Just gave my 93 R33 a run at full throttle from about 60 kmph and it started "popping"

93 R33 gts25t

Only mod is turbo back full exhaust .
Standard boost, no pod.

The popping sounds the same as when it changes gear under heavy acceleration. It started around 5-6000 rpm and lost all power while it was happening.

Could it be?

A, fuel cut.
B, Detonation.
C, Faulty wast gate / Std Bov

I would love some opinions and to hear from anyone who has had this issue and fixed it.

Thanks all.

Posted 07 April 2012 - 12:47 AM


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Hi all.

Just gave my 93 R33 a run at full throttle from about 60 kmph and it started "popping"

93 R33 gts25t

Only mod is turbo back full exhaust .
Standard boost, no pod.

The popping sounds the same as when it changes gear under heavy acceleration. It started around 5-6000 rpm and lost all power while it was happening.

Could it be?

A, fuel cut.
B, Detonation.
C, Faulty wast gate / Std Bov

I would love some opinions and to hear from anyone who has had this issue and fixed it.

Thanks all.


Also it didnt happen anywhere near as much if I accelerated slowly to full throttle still did a couple of pops but held its power.

Posted 07 April 2012 - 03:25 PM


  • mlr
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Sounds like a problem, get to a tuner to find the fault before you kill it.

Posted 07 April 2012 - 03:38 PM

The path of the righteous man is beset on all sides by the inequities of the selfish and the tyranny of evil men, blessed is he, who in the name of charity and good will, shepherds the weak through the valley of darkness, for he is truly his brothers keeper and the finder of lost children, and I will strike down upon thee with great vengeance and furious anger those who would attempt to poison and destroy my brothers.
 


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Sounds like a problem, get to a tuner to find the fault before you kill it.


Good tuner on the Goldcoast??

Posted 07 April 2012 - 03:46 PM


  • mad082
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sounds like it may be a spark plug/coil issue, or a fuel issue (leaning out)

Posted 07 April 2012 - 06:14 PM

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marc's right


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  • toffy
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Coil pack or spark plugs .

Posted 07 April 2012 - 10:55 PM


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Fuel filter fuel pump spark plug coil ect ect.

Posted 07 April 2012 - 11:04 PM

The path of the righteous man is beset on all sides by the inequities of the selfish and the tyranny of evil men, blessed is he, who in the name of charity and good will, shepherds the weak through the valley of darkness, for he is truly his brothers keeper and the finder of lost children, and I will strike down upon thee with great vengeance and furious anger those who would attempt to poison and destroy my brothers.
 


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Coil packs, spark plugs or spark plug leads. Same thing happen to my car. You have to gradually increase pressure on the gas but still popping, yea? I changed my coilpacks and all fixed.

Posted 12 April 2012 - 09:11 PM


  • LR33
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Yup you got it. Exactly the same.

Ill start working on the electrical side as soon as i have done the fuel pump.
I changed the filter and it helped a little.

Its going to go something like this,

Fuel Pump, injectors and the things that they include..
then ignition side coil pack, leads plugs.

Im not looking to make it a rocket ship it will just be nice to have it running at full capacity.. (foot to floor no issues)

Posted 14 April 2012 - 12:37 AM


Check your FPR, pull the vac line off it and have a sniff.. If it smells like fuel, then it's a faulty FPR.

I had the same problem as you, but my issue was contaminated fuel..

Could also be a faulty pump.

By the way, do you have a larger pump ? Say a 040 ? If so, they hate 1/4 tanks of fuel lol (well mine does anyway) and it surges on boost..

Posted 14 April 2012 - 01:27 PM


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Firstly im going to get the std pump to 12 v so its running at full pressure and see if that makes a difference. After that ill fit the 040 as the DIY topic explains.

I take it "FPR" is Fuel Pump Return line?or something to that description?? The one that runs from the engine back to the tank past the filter??

Posted 14 April 2012 - 01:39 PM


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mine did this ages ago 2 times, 1st time was spark plugs, 2nd time was crappy fuel.....havent had a prob since

Posted 16 April 2012 - 07:02 PM


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had similar problem after fitting 3" hi flow cat. changed plugs to iridium and reduced gap slightly 0.9 mm i think, smaller gap better when combustion pressures are higher as fuel harder to ignite. gave coil packs a good clean as there was carbon around them. ran fine then. drew

Posted 04 May 2012 - 02:24 PM


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+1 for coil packs, good tuner on the coast Gavin wood Autotech 55292313

Posted 04 May 2012 - 02:27 PM

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Posted 04 May 2012 - 05:12 PM

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woo how much??

Posted 05 May 2012 - 02:38 PM





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