2nd Generation Specific 1986-1992 Discussion

cutting out at 4k

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Old 04-24-2007, 11:12 PM
  #41  
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blah blah blah



started cutting in neutral

played with the injector wires some more, switch my fpr vacuums lines around, still nothing.
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Old 04-28-2007, 12:16 PM
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threw the walbro in,



goddamn this thing is fun

all the way to redline.



although, it was reading liek 14-15 over 5k on the wideband and i as like ohshit, and i turned the fuel up and got it to around 12, but then the last pull i made it was lean again. im gonna throw the 720s back in and see how it do.
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Old 04-28-2007, 12:21 PM
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also it randomly gets way rich at 3800, like wont go past it black smoke out the exhasut rich. weird.
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Old 04-29-2007, 01:13 AM
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so it hits a wall at around 3k now, jsut stutters and wont go past it. wideband reads 9-10 and sometimes i actually see black fuel smoke come out the exhaust.



now, if i downshift and put it above 3k, it pulls like all hell broke loose to redline, but the wideband is reading 14-15, and that cannot be good.



this **** is so confusing.
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Old 04-29-2007, 01:36 PM
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Originally Posted by Leetheslacker' post='869820' date='Apr 28 2007, 10:21 AM

also it randomly gets way rich at 3800, like wont go past it black smoke out the exhasut rich. weird.


somethings like way intermittant.
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Old 04-29-2007, 01:42 PM
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i say bad afm or tps... something dumb
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Old 04-29-2007, 01:54 PM
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Originally Posted by j9fd3s' post='869876' date='Apr 29 2007, 02:36 PM

somethings like way intermittant.


actually, it does that all the time now, not intermittantly
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Old 04-29-2007, 02:00 PM
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also, ran the fpr line to the boost gauges tee, so i know it sees boost and vacuum, still does it.



tried unplugging its vacuum source altogether, still does it.
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Old 04-29-2007, 07:18 PM
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Originally Posted by Leetheslacker' post='869880' date='Apr 29 2007, 11:54 AM

actually, it does that all the time now, not intermittantly


can you lean it out @3k?
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Old 04-29-2007, 10:52 PM
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Originally Posted by j9fd3s' post='869901' date='Apr 29 2007, 08:18 PM

can you lean it out @3k?




i can try, but i mean, stock fuel system with walbro and 720 seconadaries, it shouldnt be running rich enough to not go past 3k.



i mean, i dont think the fuel is making it stutter, it runs 9-10afr rich under boost at low rpms anyways, but it just gets to 3kish and just stutters and wont go past it and sits at 9afr even. the turbo keeps building boost as its stuttering though..



im about to say **** this **** and get a megasquirt or something, but knowing my luck id get that in and it would still do it.
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