SoCal Jet Boats
Tech Talk => Engine Mechanical / Electrical => Topic started by: Nixonnow on April 21, 2012, 07:30:06 PM
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I have a mechanical Holley fuel pump feeding a 750 double pumper Holley. I have an inline gauge on the fuel rail and at idle it reads 10-12 psi. Isn't it supposed to be more like 6-7 psi? I won't idle and I'm assuming this is why. Too much pressure. Should I put a fuel pressure regulator on it? And if so which one?
I was looking at this one. Whatcha think? Thanks.
http://www.jegs.com/i/Aeromotive/027/13215/10002/-1?parentProductId=962875 (http://www.jegs.com/i/Aeromotive/027/13215/10002/-1?parentProductId=962875)
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Oh.... And what confuses me is the boat idled and ran fine all last summer with no fuel regulator. Brand new carb as of early summer last year. I'm lost.
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You want about 6 max for a normal stock/mild motor. With ten to twelve all you are doing is pushing fuel past the needle and seat and that is what is more than likely causing your idling issues.
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Do I need to run a bypass fuel regulator or just a one in one out reg. sorry not too savvy on the fuel regulator choices. Sorry for dumb questions.
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Do I need to run a bypass fuel regulator or just a one in one out reg. sorry not too savvy on the fuel regulator choices. Sorry for dumb questions.
I'm not going to say you need it or not, but I have three motors (two that have superchargers) with just the summit brand regs with no bypass and they run fine.
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Thanks superjet for your help. I think I've got it figured out now. Just gotta order up some stuff. Thanks again.