My rb25 isn't running right - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Thatsoverated101 · 06-21-2012, 05:55 PM

Ok I'm brand new to this forum and to the rb family but here's what I have so far. 1989 240 with stock rb25 with Cx racing turbo, 550 deutch works injectors, walbro 255, apexi power fc. Now here's the problem. I just put the rb in this past week and upon first start up it was running rough. I pulled all the plugs and replaced them and it ran z little better but still not perfect. You can only tell its running bad once you give it some throttle and it stutters, so I started checking coils to see if it was spark related. Now here's where it gets Wierd. All the coil packs are good and are giving off good spark, but I can disconnect the 5 and 6th cylinder coils and the car runs exactly the same. There is no smoke at all from the exhaust like youd expect from unburnt feul. Any ideas????

06-21-2012, 05:55 PM	#1
Thatsoverated101 Join Date: Jun 2012 Location: Pembroke nh Age: 36 Posts: 10 Trader Rating: (0) Feedback Score: 0 reviews	My rb25 isn't running right Ok I'm brand new to this forum and to the rb family but here's what I have so far. 1989 240 with stock rb25 with Cx racing turbo, 550 deutch works injectors, walbro 255, apexi power fc. Now here's the problem. I just put the rb in this past week and upon first start up it was running rough. I pulled all the plugs and replaced them and it ran z little better but still not perfect. You can only tell its running bad once you give it some throttle and it stutters, so I started checking coils to see if it was spark related. Now here's where it gets Wierd. All the coil packs are good and are giving off good spark, but I can disconnect the 5 and 6th cylinder coils and the car runs exactly the same. There is no smoke at all from the exhaust like youd expect from unburnt feul. Any ideas????