FP regulator mystery.

[lookin]

I modified a brand new OE fuel pressure regulator with B&M command Flo kit, a couple of months ago, and the fuel pressure drops back to stock after a few weeks.

I have set it and reset it, making very sure each time to tighten the lock nut down good, and yet it still does this!

What the hell is going on?

Any help appreciated.

[Ondonti]

never used one before but that doesnt sound right at all.

[lookin]

OOps.

I just forgot to pull the vac line off before checking is all. I checked it again and it's fine. Getting old.

Thanks for the reply Brent.

[c2xejk]

Can you measure the height of adjuster between times? That would tell you if the adjuster is moving or if there is something happening inside it.

[lookin]

The adjuster isn't moving. I just forgot to pull the vac line before checking the FP is all.

Thanks for the reply ED.