Fuel Problems At High Speed?

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11-10-2003, 11:59 PM

CDRAD51

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Thread Starter

Join Date: Jun 2003

Posts: 33

I'm recently having problems with my FB. When I'm flooring it in 4th, at 80 mph/5,000 rpm the car starts faltering, sort of loosing acceleration in an intermitent way. If I let go of the accelerator a bit it stops, but if I floor it again it goes on again. Then if I shift into 5th, as soon as I reach around 5,000 rpm again, it does it once more. I'm guessing a possible fuel filter or fuel pump problem. Any other suggestions? problem sounds familiar? This problem became a real PITA when I was racing a guy the other day and reached 80 mph (on a slightly lower speed limit street - I almost lost!

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11-11-2003, 01:21 AM

Directfreak

Senior Member

Join Date: Dec 2001

Location: Miami, FL

Posts: 401

Quote:

Originally Posted by CDRAD51' date='Nov 11 2003, 05:59 AM

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Clog in the Fuel system (likely the filter), or a faulty coil/ignitor.

11-11-2003, 11:34 AM

j9fd3s

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Join Date: May 2002

Location: California

Posts: 22,465

sounds like fuel to me.

11-12-2003, 01:39 PM

dcrasta

Senior Member

Join Date: Dec 2002

Location: DC

Posts: 109

Ahh the good ole gsl-se high rpm fade. Man is it my imagination or did my 79 with the Nikki Carby pull harder to redline. Hmm. Hey I talked to someone that said that replacing the Gsl-se fuel pump with a say mallory or MSD pump and a real fuel pressure regulator makes the care idle like crap. Anyone ever just rip that stuff out and try replacing with of the shelf stuff? Im gonna start a new thread ..

11-14-2003, 09:01 PM

CDRAD51

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Join Date: Jun 2003

Posts: 33

Well, looks like it was the fuel filter. Just came back from a test run after replacing the fuel filter, and was doing 85 mph in 4th at 6000 rpm - no hesitation at all.