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Rb20det Missfire

MR CRX

By MR CRX,
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MR CRX Explorer

MR CRX

Posted
Posted

Posting for a mate

he has a 93 GTS-T R32

Went for a cruise the other day and it decided to shit itself

it missfires whenever hard throttle is applied at anything from 4,000 onwards

checked sparkplugs, coil packs, fuel filter, and put in a fuel pressure regulator,

still has the same issue.......

has anyone had this problem before and do they know how to fix it ?

everything was working fine until the RSM Overrode the speed limiter

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https://www.sau.com.au/forums/topic/100354-rb20det-missfire/
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blind_elk Grand Master

blind_elk

Posted
Posted

When was the last time you had the injectors cleaned?

The ignitor modules (little black box at the rear of the valley cover) are prone to start misbehaving under heat stress. They often recover once everything cools off. Try swapping with a known good one.

Try cleaning the AFM, maybe swap for a known good one.

r32skyline_89 Enthusiast

r32skyline_89

Posted
Posted

had simular problems when first brought my skyline. Used multimeters to check fuel pump. Needs to be running 12volts but can sometimes drop to 11 causing a surge which can seem like a missfire. If not that check AFM. Does it have trouble idoling sometimes ??????????????

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