Reply to "Fuel Pump pressure drop after warm-up"

bosswrenchMember

I've seen this happen when the fuel pressure regulator is the toy chrome unit sold thru discount auto parts stores, that has a rotating center to set pressure. Problem is, these things won't flow enough fuel to keep a 4bbl float bowl full regardless of the setting. They were designed for VWs and are barely adequate for 2 1-bbls on a 1600 cc engine. Don't worry about your fuel pressure- take the regulator off and try a full throttle run without it. On a Weber-equipped 289 Cobra. s-canning the toy regulator and running naked, the fuel pump could barely keep 4 lbs in the float bowls and the rig worked just fine both street & rtrack.

5/16/0111:38 PM

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