Fuel Pressure Regulator keeps failing

[Made in USA]

Originally Posted by LGAFF

When you put a fuel gauge on the rail does it hold pressure or bleed off? Ever test Fuel Pressure under load??

It holds pressure. I've not tested it under load other than at idle.

[Made in USA]

Originally Posted by ZZZZZR1

I'd wonder if it has anything to do with the fuel rail?

Is that connection not tight enough?



David

The fuel rails have been off several times. I don't think they are the issue.

[Schrade]

Can you get a vid of the gas dripping out of the FPR vac port nipple?

[Made in USA]

Originally Posted by Schrade

Can you get a vid of the gas dripping out of the FPR vac port nipple?

It's fixed now. I just want to keep it from happening again

[Schrade]

Originally Posted by Made in USA

It's fixed now. I just want to keep it from happening again

Cool.

But exactly what was going on there? Where was the fuel coming from?

Knowing what might happen with others is good yUp!

[Made in USA]

Originally Posted by Schrade

Cool.

But exactly what was going on there? Where was the fuel coming from?

Knowing what might happen with others is good yUp!

The FPR is failing internally, allowing fuel to move from the supply side back into the plenum through the FPR's vacuum line.