The original message about me breaking at the racetrack is here: https://www.thirdgen.org/messgboard/...ML/011733.html

And yeah, it was the fuel pump. Apparently I mis-read my gauge in the dark that night; remember I said the pressure was 33-35 PSI? It was actually 23-25! I'm surprised the car ran at all! The dead head pressure (by pinching the return line on the regulator) brought the gauge up to 28-30.. max pressure should be 60.

So, 15 hours, an aching body, and a few snapped bolts later, the pump's in. Funny; everyone I told about it, even the guy at the parts counter AND the girl at the return counter said the same thing: "It lasted four years? That's pretty good!" My reply? "No, that's not! The original pump lasted 11 years!" (sigh) Good thing I bought the lifetime warranty pump; I got the new one for free.

I removed the pulsator, too. I used the piece of high-pressure hose included with the pump, and I used some special "fuel injection" clamps. They look like a regular band clamp, but underneath the adjusting screw is an extra strip of metal- they must seal better.

I also replaced the low pressure emissions & return hoses- a total of three. If anybody needs that info for future reference, the inside diameters are 3/8", 5/16", and 1/4". The vent hose was 3/8", charcoal can was 1/4", and the return was 5/16". I used less than a foot of each diameter, and all 3 were marked as "fuel hose".


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-Tom P (Hot rodded 1986 Firebird 2.8l) from http://www.f-body.net/mailbag/3rd/3rd_mailbag.html message boards
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