afpr? i can't get it to adjust

[sleepersupra]

ok i installed my afpr and everything is hooked up right and my gauge doesn't read any pressure and the car idles fine but runs like crap. and when i attempt to adjust the allen screw it turns the nut with it and if i hold it still it wont budge.

and also i was reading that i'm suppose to run the vacuum line to a fresh source please explain where

 

[staticpat]

The vaccum line can read anywhere after the throttle plate. You can extend the line that ran to the factory FPR. You need to loosen the nut on top of the AFPR and then adjust it with the allen screw. Then when its set right, re-tighten the nut hard.

 

[dbsupra90]

you may have a problem w/ either the vac line/source. if you are running off the vsv that may be defective. try a diff vac source.

 

[sleepersupra]

ok i'm trying to adjust it and it still doesn't read. and by the way which way am i suppose to turn the allen screw? just double checking

 

[antman]

clockwise more pressure counter clockwise less.

 

[sleepersupra]

clockwise more pressure counter clockwise less.

ok so clockwise make it go in=rich countermakes the screw come out=lean

so since the fpr was sitting pretty far out i probably need to bring it further in right?

 

[aljordan]

You need to figure out why the guage isn't reading anythyig before you stat jacking with pressures. You WILL pop the motor if you run not enough fuel pressure.

Don't do this blind.

When you do get pressure to read on the guage, run 2.5-3 bar of fuel pressure with *****no vacuum***** applied to the FPR. Yes.. that no vacuum part is vital.

 

[antman]

if its not running good, but you need to get that gauge reading. what kind is it?

 

[sleepersupra]

i might get crap for this but it's a megan from robert at 935.

 

[sleepersupra]

where do you guys have your vacuum running to from the fpr

 

[hottscennessey]

the hard pipe under the intake manifold.. I'd test it first to verrify that you have vac. Avoid using the VSV.

 

[sleepersupra]

the hard pipe under the intake manifold.. I'd test it first to verrify that you have vac. Avoid using the VSV.

ok so i can just take it off right? does anyone have a pic of it cause there are two lines that run to it, if i'm correct and if i eliminate it then what?

 

[antman]

iam not using my vsv, but i don't think its nessesary to pull it. use the same vac line as the stock fpr.

 

[sleepersupra]

i am using the same but it won't read any pressure

 

[spoolint78]

double check that you have it installed correct.

Is it one of those cheap ebay looking ones?

i wouldn't trust those.
I had a friend with one that failed.

 

[sleepersupra]

yea i agree but it pisses me of that i spent that money and it's worthless

 

[dbsupra90]

ok, forget the vac line at the moment.

in the diag box, jumper Fp and +B. this will engage 12v to the fuel pump. while watching the gauge, adjust the regulator up and down to see if it changes. if it does not, either its hooked up wrong or defective. if it does, then you have a vac line problem. start there and see where you are.

ninja edit- do this w/ the ignition in the on position and the car not running.

 

[Supracentral]

One other thing.

Did you use that goofy teflon tape on it? If so, are you sure it didn't block the hole on the bottom of the gauge?

Also, be sure you aren't dealing with a defective gauge, the FPR might be fine.

 

[sleepersupra]

One other thing.

Did you use that goofy teflon tape on it? If so, are you sure it didn't block the hole on the bottom of the gauge?

Also, be sure you aren't dealing with a defective gauge, the FPR might be fine.

no i didn't use teflon the guage was already on there when i got it. this may sound stupid but will the guage only read pressure if the box is jumpered? if so thats probably my problem

 

[Supracentral]

this may sound stupid but will the guage only read pressure if the box is jumpered? if so thats probably my problem

No, the gauge should read pressure anytime the car is running. If it's not reading anything, it's likely the gauge (or the regulartor) is defective.