86 z28 305 TPI won’t accelerate past 1/4 throttle and backfires

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Nov 11, 2024 | 03:54 PM

Bill grimm

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86 z28 305 TPI won’t accelerate past 1/4 throttle and backfires

Nov 12, 2024 | 02:23 PM

ironwill

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Joined: Jan 2008

Posts: 1,331

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Car: 1986 IROC Z

Engine: 5.0 TPI

Transmission: 700R4

Axle/Gears: 3.23 Posi

Re: 86 z28 305 TPI won’t accelerate past 1/4 throttle and backfires

What have you checked/tested so far, and what were the results of those tests?

Nov 12, 2024 | 03:25 PM

ULTM8Z

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Joined: Jan 2003

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Re: 86 z28 305 TPI won’t accelerate past 1/4 throttle and backfires

take an Ommeter and check your spark plug wire resistances. That's a classic symptom of a bad spark plug wire(s)

Nov 17, 2024 | 08:49 AM

ironwill

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Joined: Jan 2008

Posts: 1,331

Likes: 565

Car: 1986 IROC Z

Engine: 5.0 TPI

Transmission: 700R4

Axle/Gears: 3.23 Posi

Re: 86 z28 305 TPI won’t accelerate past 1/4 throttle and backfires

Quote:

Originally Posted by ironwill

What have you checked/tested so far, and what were the results of those tests?

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86 z28 305 TPI won?t accelerate past 1/4 throttle and backfires

86 z28 305 TPI won’t accelerate past 1/4 throttle and backfires