RB20 misfire: no injector pulse on cyl 1,3 and 5 - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

MadMaverick · 05-10-2010, 09:21 PM

Trying to figure out the running issue on a friends RB. Car misfires on 1, 3 and 5. Ignition harness is all new and spark is good on all cylinders. I checked the injectors with a noid light and found that 1, 3 and 5 are getting no signal. Pulled the CAS to spin/check injectors and only 2,4 and 6 fired. CAS feels a bit "crunchy" when turning in some spots. I told the guy he will need a new CAS to start with, but the car has other issues. The original harness was burned up but the seller told him the ECU was "good". Since I have no RB20 parts lying around, I cant test for a bad ECU.

Has anyone else had this problem? (Dropping injector pulse on 3 cylinders)

05-10-2010, 09:21 PM	#1
MadMaverick Zilvia Member Join Date: Mar 2006 Location: Central Jerz Posts: 161 Trader Rating: (1) Feedback Score: 1 reviews	RB20 misfire: no injector pulse on cyl 1,3 and 5 Trying to figure out the running issue on a friends RB. Car misfires on 1, 3 and 5. Ignition harness is all new and spark is good on all cylinders. I checked the injectors with a noid light and found that 1, 3 and 5 are getting no signal. Pulled the CAS to spin/check injectors and only 2,4 and 6 fired. CAS feels a bit "crunchy" when turning in some spots. I told the guy he will need a new CAS to start with, but the car has other issues. The original harness was burned up but the seller told him the ECU was "good". Since I have no RB20 parts lying around, I cant test for a bad ECU. Has anyone else had this problem? (Dropping injector pulse on 3 cylinders)