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Popping and hesitating on takeoff

Mick

By Mick,
in General Maintenance

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Mick Mentor

Mick

Posted
Posted

hey my car has been doing this for a long time now, it seems to pop pop pop pop and hesitating if im taking off from a stopped position, if im gentle it doesnt do it but if i take off a bit quickly it will do it, it used to only do it with 91 octane but now does it even on 98. Its much worse on hot days, it happens alot worse on high boost but still does it but not as bad on normal boost. Could this be coilpacks?

the car is an R33 GTST S2, no real mods and high boost is only 11psi and low is about 6psi

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GTSBoy Grand Master

GTSBoy

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Posted

You shouldn't even try to run these engines on 91 RON fuel, even on 6 psi.  You may well have pinged the thing to death and no have lots of damage on top of your pistons making hot spots and making it more prone to pinging.

Nevertheless, this is the standard "my car is missing" type of question and so all the standard answers that have been rolled out millions of time before apply.  Ignition system, AFM, CAS, etc, etc etc.  All possible.  Internet diagnosis is impossible.

Mick Mentor

Mick

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Posted

oh sorry i ment the premium 95 but now does it on 98 as well, i never run on 91 unless emergency and i have octane booster in car just in case, i feel like its coil packs cos maybe it started after i put the coil pack cover back on im not sure, i never used to have it on

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