hi, recently i bought a 1984 240, it have problems with the fuel regulator, im goin to replace it,, i friend of mine just give me a universal fuel regulator,, but im not shure the fuel psi to adjust it. thanks for the help!!

 

I'm assuming you have a B23F engine or else you wouldn't know where to install the regulator! They used a 3 bar fpr which converts to 43.51 psi. I'm curious what brand of universal fpr he located for you. The only direct fit one I know of is a black Holley model.

 

if the car uses LH injection (I think an 84 does), its 44 +/- 2 PSI relative to manifold vacuum (eg, the fuel pressure regulator has a vacuum line).

older K-Jet models had around 65PSI pressure prior to the various K-Jet thingies.

I'm curious how you diagnosed 'problems with the fuel regulator' ? the only problem that can be diagnosed without using a fuel pressure gauge is a blown diaphragm causing fuel to spew out through the vacuum fitting on the back of the regulator.

the pressure regulator is directly screwed onto the output side of the fuel injector rail, and has the fuel return line back to the gas tank connected to it, in additon to previously mentioned vacuum line.

 

thanks for the info,, well when i bought the car , it was without the fpr, his old owner remove it from the car and mentioned its bad, to be honest i dont know if it really bad or not,, but the guy throw it away and i cant test it.. thanks again for the info..

 

lets see, a 1984 240 with the B23F engine, the Volvo PN for the FUel Pressure Regulator is 3517102 (supercedes 1306935). Thats a (ouch) $300 part at the dealer, but Bosch branded ones at IPD are $100, Fuel Pressure Regulator

thats likely what *I* would use, not some generic part.

 

thanks guys for ur tips,, the regulator its installed, and working ok,, thankss!!