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grumpybbear
Freshman Member
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i have too much fuel pressure. up to 6 psi from a standard su pump. does anyone know why and how to resolve the problem.
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fuel pressure
- Thread starter grumpybbear
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JohnnyB1275
Senior Member
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I got a fuel pressure regulator, a holley 4-7psi unit, and then I tuned it to midway and it worked pretty well now(this is going into two MG B carbs on my midget thow) but you can tune it to what works. /ubbthreads/images/graemlins/smile.gif
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grumpybbear
Freshman Member
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been told it should run on about 2.5 psi. Know any reason why the pump would increase in pressure like it has
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This problem is kind of unusual. Are you sure the pressure gage is correct? The fuel pressure is set by the armature return spring tension. I can't imagine the spring increasing it's tension. Only other thing I can think of is that the diaphram itself has lost elasticity & is contributing to the overall spring force.
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