Rb20 misfire!

[92R32GTST]

Rb20 misfiring on back 3 cylinders with newer coil packs.. It's not the coil packs I already checked. Also revs veryyyy slow. Rich and pops, idle around 1k. Would rb25 maf cause this? (Green label). Thanks guys, I already searched btw and everyone else had slightly different probs.


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[92R32GTST]

Bump, Ignitor? Still misfire. Brand new coil pack harness


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[s14-rb20det]

check your TPS, CAS and MAF

[92R32GTST]

Would a maf cause this it to idle and rev real sluggish?


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[s14-rb20det]

Yes, but my question is your car run find before? Do you check fuel pressure spark plug? RB25 and rb20 maf s1 is the Same. Check your intercooler pipes.

[92R32GTST]

I don't think it's s1 maf though lol it's a green label. Kid wasn't brightest. At times it would wanna run ok but would break up like fuel cut up top and then would fall back into subie mode. A little free rev and she would run ok again till you jumped on it under a load.


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[baube]

injectors maybe?

back 3 are on a sub-harness...

[92R32GTST]

Back 3 cylinders are missing. I just bought injectors already has a brand new harness so we'll see if this Ignitor and injectors wirk


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[s14-rb20det]

injectors maybe?

back 3 are on a sub-harness...

Maybe you have A/F gauge?

[92R32GTST]

Don't have a wideband hooked up


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[s14-rb20det]

Don't have a wideband hooked up


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So how do you know the car run rich?

[92R32GTST]

Black plugs and stinks like gas


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[s14-rb20det]

Black plugs and stinks like gas


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Ok Before you going crazy, you going to have to start from the beginning, check your fuel pressure 42psi, reset You ecu, check your plugs, turbo pipes

[92R32GTST]

Isn't there a certain way to reset the ecu? You can't disconnect battery? New to rb ecu's p


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[s14-rb20det]

Isn't there a certain way to reset the ecu? You can't disconnect battery? New to rb ecu's p


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Yep disconnect the battery and step on the brakes for 2 min, in my car do the trick.

[92R32GTST]

Lol ok. I appreciate the information to guys that's awesome. When I get home I'll reset the ecu. Also I noticed the red led on ecu blinked 5 slow times followed by 5 fast blinks. Code (55) but that code came back to meaning it was running good? Lol


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[Cronus577]

I'd pull the plugs and make sure they're gapped correctly. Or get rid of the RB20 completely, the thing is a boat anchor and worthless :\

[92R32GTST]

I'm bias with rb I'll hang on to it lol. I already have rb25 swapped 240z lol. Plugs all gapped at .08


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[Cronus577]

JESUS, .08?!?!? Is it boosted?!

[s14-rb20det]

I'd pull the plugs and make sure they're gapped correctly. Or get rid of the RB20 completely, the thing is a boat anchor and worthless :\

I respect your opinion, just to let you know I have my rb20det for The pass five years with the precision 6262 500hp on 23psi and I never have a problem. But that me.http://i896.photobucket.com/albums/ac166/s14-rb20det/F49D8377-FF60-44CF-8096-B937E7C4D15C-8619-000004ADFD5EFD26_zpsd702fd68.jpg (http://s896.photobucket.com/user/s14-rb20det/media/F49D8377-FF60-44CF-8096-B937E7C4D15C-8619-000004ADFD5EFD26_zpsd702fd68.jpg.html)

[Cronus577]

I respect your opinion, just to let you know I have my rb20det for The pass five years with the precision 6262 500hp on 23psi and I never have a problem. But that me.http://i896.photobucket.com/albums/ac166/s14-rb20det/F49D8377-FF60-44CF-8096-B937E7C4D15C-8619-000004ADFD5EFD26_zpsd702fd68.jpg (http://s896.photobucket.com/user/s14-rb20det/media/F49D8377-FF60-44CF-8096-B937E7C4D15C-8619-000004ADFD5EFD26_zpsd702fd68.jpg.html)
No no don't get me wrong, the motors are tough but the on I had only had power at 5-6k+ rpm. They're just way too heavy to justify the weight of it and amount of power it made

[92R32GTST]

That's awesome^ 6262 all day!


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[92R32GTST]

It's a rb20det so yes lol.


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