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Old 01-10-2008, 12:57 PM   #5
wrightz28
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Re: 91 Firebird 305 TBI sputtering

Quote:
Originally Posted by waterskier_69
I thought when a fuel pump quit it just quits and does not run. Is this different for an electric fuel pump as opposed to mechanical?

Someone else told me it could be a bad spark plug wire or hairline crack in a spark plug that behaves different at different engine temps. Does this sound likely?
Not neccessarily saying it's a fuel pump failure, but a pressure check, especially a running check when the problem occurs can eliminate it from the picture.

Cracked plug, it should run like poo at all times.

There are a few ignition components that can cause these symptoms, BUT, anytime I hear "sputters" I tend to lean toward eliminating the fuel system.
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