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My 84 is misfiring all of the sudden

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Old

Jun 29, 2013 | 11:15 PM

#1

Thread Starter

Junior Member

Joined: Feb 2013

Posts: 98

Likes: 0

Car: 1985 Iroc-z28

Engine: 5.7l TPI

Transmission: 700r4

Axle/Gears: Stock

My 84 is misfiring all of the sudden

there is a thumping noise coming from my exhaust and a significant loss of power. the engine isnt making any irregular noises. I was driving all day today and the car was fine, then I took it home for about an hour and when i was driving it started doing this, any reason why or what could be causing the misfire, I just replaced spark plugs, cap and rotor about 3,000 miles ago but not spark plug wires.

Old

Jun 30, 2013 | 07:27 AM

#2

Supreme Member

Joined: Jan 2011

Posts: 1,732

Likes: 4

Re: My 84 is misfiring all of the sudden

Restricted exhaust.

Old

Jun 30, 2013 | 10:51 AM

#3

Thread Starter

Junior Member

Joined: Feb 2013

Posts: 98

Likes: 0

Car: 1985 Iroc-z28

Engine: 5.7l TPI

Transmission: 700r4

Axle/Gears: Stock

Re: My 84 is misfiring all of the sudden

How so?

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