setting up a fpr

[pandy180sx]

got an adjustable fuel pressure regulator and wanted to get right pressure more or less on it before i put it on the car so gave it to a techie to set it with a pneumatic line. he said he cant seem to do it properly that it shoots up big steps i.e. from 1 bar to 3 bar. does it need to be done with liquid or is it just ****ed ? ?

[redsx94!]

You will need to do it on the car. Get a pressure gauge and plumb it onto the fuel line with the fuel filter on it. There is a vacuum pipe that goes onto the fpr so at idle it gives less fuel pressure but on throttle it gives more. So I think you need to set it up with the vac line disconnecting.

[pandy180sx]

theres a gauge on the actual fpr. i jus wanted to have it done first so i wouldnt start and it be nearly closed or fully open ya know
cheers

[martinbattye]

the normal method would be to wind the preload out as far as possible.. (lowest pressure) fit and adjust accordingly