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In the last couple of days my R32 (RB20DET) has been running like crap. Above 1500 rpm is runs like usual but as soon as the revs drop it idles rough and eventually stalls. Theres no atmo bov or leaks anywhere that I could find.

I had it stall on me today and wouldn't start back up again, the RAC guy cranked it for a few minutes solid and it eventually started again. He sprayed a bit of fuel past the throttle body which made it worse. His consensus was the fuel reg might have been causing overfueling, the fuel pump seems to be doing its job and it definately has a spark. The only thing I can see being the problem is the injectors, AFM or fuel reg. I'm going to hook up a consolt cable tomorrow to check out the AFM and Injector duty to rule them out.

Anyone have any suggestions to what might be the cause?

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https://www.sau.com.au/forums/topic/184689-overfueling-under-1500rpm/
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