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Author Topic:   Fuel Pressure Problem
Dirt Full Roller

Total posts: 44
posted August 05, 2002 09:27 AM UIN: 10024185
I recently installed a fuel pressure guage into my street-stock. At idle, pressure is fine and holds pretty steady at about 6 psi. Out on the track, the pressure keeps dropping slowly as the race goes on. At the end of my feature, I was down to about 2 psi and my right exhaust manifold was starting to glow red. I changed the fuel pump between my heat and feature and that did not help at all.

Does anyone have any clues about this problem?

Fuel System:
50/50 Turbo Blue, Pump Gas.
RCI Fuel Cell with working vent (I checked this)
Aeroquip -8 Supply line tank to pump
Aeroquip -6 Line Pump to Carb
Carter fuel pump.
Holley 4412 'KB Carburators' Carb.
Fuel Filter: 3 races on it. Fram Performance Filter. features 90 GPH @ .5 PSI, 3/8" NPT inlet and outlet


[This message has been edited by Stonewall (edited August 05, 2002).]

Dirt Freak

Total posts: 368
posted August 05, 2002 02:58 PM
I know you said the fuel filter only has 3 races on it, but i had the same problem at first of year and i didnt think it was the new filter but after chaising my tail for 3 races i swapped the filter with another one and it fixed it.

Dirt Forum Champ
Total posts: 564
posted August 05, 2002 09:36 PM UIN: 25419780
Stonewall make sure your fuel tank is breathing. Your vent could be closed up and it's trying to suck the fuel through the tank without any air. Also check the rubber lines and make sure your fittings are tight.

Dirt Forum Champ
Total posts: 1565
posted August 06, 2002 12:11 AM UIN: 54865418
make sure your fuel line is not close to anything hot i had the same problem a couple weeks ago the fuel line was sitting on my bottom hose and it boiled the fuel

Dirt Full Roller

Total posts: 44
posted August 06, 2002 07:51 AM UIN: 10024185
Good tips guys, thanks... I'll check all the above and let ya know how it turns out.


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