R32 Gtr Misfire, Stall Wont Rev Past 6500rpm.

[markimak]

Hey, just got the GTR and noticed after a few weeks that it was missing and wouldnt rev past 6500rpm in gear. just miss too much. in nuetral i can hit 8500rpm and black smoke will come out of exhast.. rich?

i was told my air flow meter plug connector is bad. and occasionally while driving it will lose power.. retard. and sometimes even stall.. ... it will just stall.. one time during the day.. i was driving from repco and it wouldnt rev over 2500rpm. and when i put my clutch in it would stall..

this problem doesnt occur when its cold.. mostly on the highway or coming to a stop.

im thinking its my AFM or both of them. or the top plug connector. or something ignition related. changed plugs and will regap them to .8mm tomorrow.. hopefully something will happen.

this is kinda a scary problem as the car just loses all power and will stop stall or retard..

any help would be very appreciated. please

thanks

[markimak]

i have changed fuel filter and a fuel line (was split) plugs r PQ20R Denso Platnium's. and have reset ECU and mildly cleaned injectors...

still no fix.

please i need help its really pissing me off.

[SimonR32]

plugs are gapped to big, try working down from .8mm to around .6mm in 0.05 incriments

[markimak]

... i just checked the NGK plugs that came out of the GTR they r over 1.0.. with feeler gauges. oh well. ill regap them soon. any other ideas?

just pulled off both AFM and PS belt. connector pins in top AFM is bent.. rectified now. so will check test soon.

[markimak]

i fixed it.. only to have it blow a cooler pipe at 8000rpm.. now its missing up high.. hope it is my cooler piping.. ?!? run ssweet.. plug gaps are set to .75mm and cleaned both AMF and connectors