RB30DET ECU fault code 21, but it has spark

Discuss the RB20, RB25 and RB26 series engines.
laurel33
Posts: 2
Joined: Sun Feb 14, 2016 1:12 am
Car: 1990 Nissan Laurel C33
RB30DET

Post

my 30det has a s1 rb25 head and ecu, i had it running before but for some reason it doesn't start anymore. It cracks over but doesn't get going. all i know atm is that the ecu indicates fault 21 but it has spark and that the spark plugs keep getting flooded. Any ideas what might be going on.


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