LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

tryin to futher diagnose problem, already changed opti

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Old 05-29-2005, 08:31 PM
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tryin to futher diagnose problem, already changed opti

recently changed opti on my 93 z but it still aint runnin the same way. i tryed to power brake other day and it started sputtering then stalled. what else could it be. it also sputters when you punch it at low speeds
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Old 05-30-2005, 09:51 AM
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Re: tryin to futher diagnose problem, already changed opti

Fuel problem maybe. How long has it been since you had the injectors cleaned? What is the pressure doing when the problem occurs? How old is the fuel filter? Is there fuel in the FPR vac line? What's the fuel mileage like lately?
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Old 06-02-2005, 09:55 PM
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Re: tryin to futher diagnose problem, already changed opti

**** couldnt really tell you, i know i've changed the fuel filter, ran some fuel injector cleaner through it and changed the cap and rotor. i would like to know where else to start so i can narrow the problem down.
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