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

What are the symptoms of a misfire?

Old Apr 21, 2004 | 12:34 PM
  #1  
KillerTA's Avatar
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What are the symptoms of a misfire?

At 60mph and up, about 50% of the time my engine starts to shake kind of bad. Its an intermittent shake, it happens about every second or so.

I don't know what it could be
Old Apr 21, 2004 | 12:44 PM
  #2  
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Re: What are the symptoms of a misfire?

Originally posted by KillerTA
At 60mph and up, about 50% of the time my engine starts to shake kind of bad. Its an intermittent shake, it happens about every second or so.

I don't know what it could be
I had a misfire once from a burnt wire and it did sort of like you described. under high load and low rpm the car would violently shake until the rpms increased above a certain point.. around 3k.
Old Apr 21, 2004 | 04:52 PM
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valter's Avatar
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From: Leesburg, VA
Sounds like it. Shaking, no power, sometimes running rich, backfire, smell of burnt wires everywhere or feeling of going opti . Check wires. Get it scanned. SES light is not blinking when engine shaking?
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