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Old 05-03-2009, 05:43 PM
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Fuel Pressure Regulator Lock Nut Issues...

... Is there a trick to getting the locknut loose on these 20 to 30 buck regulators? Both the Holley version on my car, and the Quick Fuel model I'm putting on have lock nuts that are nearly impossible to budge.... Is there a trick on getting these loose that I'm missing?? Other than "Loosen the Lock nut", there isn't much help to glean from the Quick Fuel instruction sheet... I know these probably need to be tight so the setting stays constant, but sheesh, how to you adjust the pressure on these if you can't even budge them???

Hopefully there is an easy solution that I've overlooked....???

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Old 05-03-2009, 06:07 PM
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Maybe its left hand threaded. Try turning the locknut the other direction.
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Old 05-03-2009, 07:27 PM
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If you haven't tried yey, try using 2 wrenches. One on the block of the reg. Should have a place for this near the lock nut. And put wrench on the locknut. Have them about 60 degrees apart or a little less. Then squeeze them together. This will give you the most leverage rather then having the wrenches further apart.
The Holly I got was very tight and this is how I did it.
Make sure you use quality wrenches and don't round off the reg. block.
Also may help to put an allen wrench in the adjustment screw at the same time and turn that with the locknut wrench.
Hope this is clear to you. Bob
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Old 05-03-2009, 07:29 PM
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Originally Posted by Dilbert
... Is there a trick to getting the locknut loose on these 20 to 30 buck regulators?
No trick.

It may have a thread locking compound- just use a 6-point box or socket and hold your mouth right.
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