Did PPRV Delete but I think FRPS went bad

[Fostang]

So I had just finished up the PPRV delete on my 04. Went for a drive and after getting on it it stumbled and when I went too look at the FP instead of climbing from 20psi it was dipping to 15-10 psi under boost.

Could the FRPS gone bad? I can drive it under normal conditions just under boost it falls on its face.

Pulled the vacuum hose to the FRPS didn't smell any gas.

The car has stock pumps, BAP with wire upgrade and 60's. Was running just fine prior to the PPRV delete. (other than the shift hesitation)

 

[Fostang]

I did get the overboost and fp rail code when this happened

 

[stal94gt]

i would data log your fuel pump duty cycle to check to make sure you dont have a kinked line, or a torn gates hose. both those are common when doing a pprv deleat.

 

[Fostang]

Did disconect the vacuum hose at idle to see if the fp would raise to 40 psi and it barely moved up.

What will it say on the duty cycle if it's a bad line? High or low?

 

[Fostang]

This is how I did it to avoid kinks.

 

[Fostang]

Tried disconnecting the frps and it just died wouldn't even turn on. Fuel pressure will not go past 20 psi no matter what I do.

I think one of the lines in a pump may have came off. Damn

 

[Fostang]

tried a data log reads 50% most of the time.

BAP is working. I have it locked at max and the voltage is 17 before the fdpm.

On data log when it falls on its face the fp goes to zero under load/boost.

My guess is that the leak isn't that bad so it has enough to push thru for idle and part throttle driving but at WOT it just runs out of fuel

Any other ideas before I drop this tank and check it out?

 

[davidbcasey]

tried a data log reads 50% most of the time.

BAP is working. I have it locked at max and the voltage is 17 before the fdpm.

On data log when it falls on its face the fp goes to zero under load/boost.

My guess is that the leak isn't that bad so it has enough to push thru for idle and part throttle driving but at WOT it just runs out of fuel

Any other ideas before I drop this tank and check it out?

Occam's Razor, dude...drop the tank and you will have your answer. :beer:

 

[Digital]

This is how I did it to avoid kinks.

Creative and well done sir.

 

[Fostang]

thanks... Apparently not that well done LOL

Ahh man I gotta drop the tank AGAIN what a pain.

 

[EvilBlack]

I feel your pain, mine worked great but the tank float must've gotten stuck so I get to drop mine again.

I really like the way you used the hard fuel line with nice bends. Thought about it but no materials or the right tool so I went with the old school way.

 

[Oscar_SVT]

I had the same issues and it was the frps...