olley black pump and holley 704 regulator

Old 06-09-2012, 05:24 AM
  #1  
jreiley
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Default olley black pump and holley 704 regulator

I put the above combo on my sbc. When the engine is running, the regulator does its job of limiting pressure to 6-7 lbs. However when the engine is off and the pump is on, it will not hold the pressure to 6-7 lbs but goes up to the max of the pump -14 lbs. This causes fuel to leak out of the carb. Somewhere I read that the black pump has an external bypass port. Not on mine. At least I can't find anything but in and out. The regulator has 2 output ports, 1 is plugged, the other goes to the fuel log. Should I unplug the plugged port and run it back to the fuel tank? I really don't want to buy another pump. Any help would be appreciated.
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Old 06-13-2012, 12:30 PM
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jreiley
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Holley not Olley. Anyway I have since learned that pressure creep is common.
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Old 06-13-2012, 06:36 PM
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TheYellaBrick
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Holy mollie Holly Molly, it's a HOLLEY Wally !

:shock: :shock: :shock:
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Old 06-13-2012, 06:52 PM
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fast75vega
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i run two holley blue pumps and they hold firm at 7 pounds.... running or engine off
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Old 06-27-2012, 07:40 AM
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spib
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I used to have this problem ,I had a bad reg
I bought a pro systems reg from them and it did it from day one now I have the big holley reg problem fixed, I run the black pump and have no return back to cell, it holds 7.5 with motor on or off
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Old 06-27-2012, 07:46 PM
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hammertime
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Originally Posted by jreiley
Holley not Olley. Anyway I have since learned that pressure creep is common.
Nothing common about pressure creep, regulator issue.
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Old 06-28-2012, 05:02 AM
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fast75vega
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Originally Posted by hammertime
Originally Posted by jreiley
Holley not Olley. Anyway I have since learned that pressure creep is common.
Nothing common about pressure creep, regulator issue.
yes sir..... :wink: :wink:
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