Very Odd Misfire... RB20DET

[Hogg]

Alrighty,

So I have an RB20DET powered Cefiro, and recently it just started running on two Cylinders... it seems that only 1 and 3 are firing, however all other coilpacks when pulled out and tested are definitely making a solid spark.

I have tried new MAF, Igniter, ECU, Coilpacks, Insulating with RTV, wiring, everything seems to be okay. However the car struggles to idle and is making lots of loud popping and running phenomenally rich.

No codes have been thrown, spark plugs are all new, no vacuum leaks, everything seems to be okay? The car honestly ran fine a couple weeks ago, I pushed it outside and it hasn't ran properly since!!!

This has got me incredibly frustrated and obviously I want the car to work!Please give me any insight towards the problem, it would be much appreciated.

Thanks!-Spence

[DrifterProdigy85]

Have you tried the timing? Are the plugs wet with fuel?

[Hogg]

Plugs wet with fuel, but CAS and Cam timing all seem to be good???

[Carl H]

check for a blown ic pipe perhaps?damaged coupler?

[DrifterProdigy85]

Boost leak like carl said and is it all the plugs that are wet? If its only a one then it could be an injector.