try to learn this above EFI.
first off the FPR controls fuel pressure, not the pump, ok.
if the pump is shunted(blocked), it can go to 60psi, all by itself, no FPR present or say it (FPR) jams shut at 27 years, yah it can.
this 60PSI is the power of the pump motor that does 60psi (and actual pump) just it , even bench tested, with test fluid.
the FPR regulates pressure at all time on the 8valve it is only altitude compensation. only 34-41psi, is spec, and real. (running normal)
the hose and all parts are rated for shut pressure and engineers go 50% more or risk car fires and dead customers. or far far worse, garage fires cascading... on.)
50% is 30PSI, and 30+60 is 90 PSI so hoses (and friends) are rated at 90 to 100psi. They (we) think like this no fires for 30 years, , .
there are 3 cures. (1 in BAD #3)
1: new hose sets from suzuki , banjo death.
2: re-face the banjos and new copper seal washers.
3: and jerry rigged, (endless) seen bad actors try to cut the banjos off and use new fittings mated to 27 year old hoses, this is a huge danger this.
never cut up 27year old hoses, or nothing but bad awaits. (factoid: all parts must flue injection grade rated, nothing less)
this is not some modern car, some things will be super bad, expect it. (age , wear and rust and time. )
there are 3 hoses, Fuel) (1 front)
there are 2 hoses here at filter, very old and very bad, on most.
filter hoses. one is 15804-61a01 (change 804 to 810 or the other)
suzuki shows no hoses sold not, zero stock. banjo custom to them.
the P/N used online at SUZUKI USA, they do not list them. now. (discontinued)
what I did to my banjo's hoses seemed ok, I hand re- Machined the faces, with 400 grit then 1000 last. on oak board. hard wood of any kind , not pine) or use flat steel play, as base.
good luck finding parts for this car.
here is the source (parts not sold aftermarket on this car are huge)
https://www.suzukicarparts.com/v-1995-su...-6l-l4-gas
first off the FPR controls fuel pressure, not the pump, ok.
if the pump is shunted(blocked), it can go to 60psi, all by itself, no FPR present or say it (FPR) jams shut at 27 years, yah it can.
this 60PSI is the power of the pump motor that does 60psi (and actual pump) just it , even bench tested, with test fluid.
the FPR regulates pressure at all time on the 8valve it is only altitude compensation. only 34-41psi, is spec, and real. (running normal)
the hose and all parts are rated for shut pressure and engineers go 50% more or risk car fires and dead customers. or far far worse, garage fires cascading... on.)
50% is 30PSI, and 30+60 is 90 PSI so hoses (and friends) are rated at 90 to 100psi. They (we) think like this no fires for 30 years, , .
there are 3 cures. (1 in BAD #3)
1: new hose sets from suzuki , banjo death.
2: re-face the banjos and new copper seal washers.
3: and jerry rigged, (endless) seen bad actors try to cut the banjos off and use new fittings mated to 27 year old hoses, this is a huge danger this.
never cut up 27year old hoses, or nothing but bad awaits. (factoid: all parts must flue injection grade rated, nothing less)
this is not some modern car, some things will be super bad, expect it. (age , wear and rust and time. )
there are 3 hoses, Fuel) (1 front)
there are 2 hoses here at filter, very old and very bad, on most.
filter hoses. one is 15804-61a01 (change 804 to 810 or the other)
suzuki shows no hoses sold not, zero stock. banjo custom to them.
the P/N used online at SUZUKI USA, they do not list them. now. (discontinued)
what I did to my banjo's hoses seemed ok, I hand re- Machined the faces, with 400 grit then 1000 last. on oak board. hard wood of any kind , not pine) or use flat steel play, as base.
good luck finding parts for this car.
here is the source (parts not sold aftermarket on this car are huge)
https://www.suzukicarparts.com/v-1995-su...-6l-l4-gas
http://www.fixkick.com