LT1-LT4 Modifications 1993-97 Gen II Small Block V8

94 z intermittant miss at high rpm only under load?im stumped guys

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Old 02-23-2012, 08:36 PM
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Default 94 z intermittant miss at high rpm only under load?im stumped guys

msd is good ,opti is brand new, wires and plugs are brand new.

Just got the cc306 and rr's and tune done with built trans and stall.car didnt do this before that..i guess it could be a bad opti and the guys that tuned it tell me its not the tune...im freakin stumped oh yea and fuel filter and walbro 255 are only a year old.help me out here boys
Old 02-23-2012, 08:45 PM
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Could be your coil...
Old 02-23-2012, 09:02 PM
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try closing the gap of the plugs a tad?
Old 02-23-2012, 09:20 PM
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my car was doing that for awhile and i couldn't figure it out, ended up being a coil.
Old 02-24-2012, 04:35 PM
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yea i swapped the coil out and its still doin it..i may try closing the gap out on the plugs..i swear im leaning towards the opti even though its brand new..im gonna go through the car this weekend and see what i can find..
Old 02-24-2012, 07:00 PM
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Did u put new springs in it too? Fuel pressure in higher rpm? Injector dropping out? What rpm are we talking about?



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