Andrew85cm

Yeah my RB20 was doing that probably because it had sat for over a year. I replaced the spark plugs cause they turned out to be factory and it started firing on all but one piston and then I figured out that a fuel injector was clogged so I tapped on it with a screw driver and hammer for a few minutes trying to break the injector loose and then it fired on all cylinders. I still need to run some sea foam. I also replaced the coil packs on the two cylinders not firing and I replaced my ignitor chip. I think neither of those items were bad. So just check it out and rule out all the cheap options. My situation probably doesn't apply but my point is rule stuff out with cheaper options before going all hardcore about it. I have a RB20det in my s13 and I am in the US so your motor probably hadn't been sitting for years lol. ~ANDREW~