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Discussion Starter · #1 · (Edited)
I have one of these Holley fuel regs and it's leaking. Seems to be coming from the top where the adjustment nut is (shouldn't be any fuel there) so I bought a replacement diaphram and swapped it out and....it's still leaking. :001_rolleyes:

I sent a question to the Holley tech people but wanted to see if anyone here has any experience/issues/suggestions.

http://www.summitracing.com/parts/hly-12-803bp/overview/
 

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Discussion Starter · #3 ·
That's the only thing I can come up with too but I can't find anything in the mating surfaces and it's never been apart before it started leaking. Don't see any cracks either.
 
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