1995 16v rail pressure or at the fuel filter test port 6mm tap plug???????????????????? if at filter is the filter new? (not 20 years old but newer?)
keyon only , 36 to 43 ( is 1 PSI low) {35} mine did 36 (both cars)sealevel , are you at sealevel , not Denver?
idle is 30-37 psi. {35} failed hard. the vacuum fails to make the FPR do its job. , mine drops to 30 PSI. a 6PSI drop caused by the vacuum 19" at idle.
gunned TV, must try to go higher, towards keyon only pressure but not quite, FAILS in fact is INVERTED far far worse that.
well now you know why and car this old fails for FPR readings, wild and wrong.
did you do the shunt test?
55psi is typical shows pump is ok this test.
this is how it works, data off good engine,efi and new FPR the right side is with a hand vacuum tool (simulating hard fast deceleration in gear)
the green words are for gingo ,, USA imperial measurements. (we are the odd ducks of the world)
![[Image: reg-graph-mpi-g.jpg]](http://www.fixkick.com/INJECTORS/PUMP/reg-graph-mpi-g.jpg)
like the last poster with FPR failed, lets do the BUCKET TEST.
if the FPR fuel return line is connected to the wrong hose or the hose is clogged,or metal pipe on right inside frame rail is pinched or connect wrong back aft,
the FPR can not work right at all.
so we disconnect the fpr return line at fpr, and run a new test hose to there and a catch fuel bucket, (with fuel gauge in place on the rail) {30psi}
and if the FPR works now, we know what is wrong. beats spending $60 on a new FPR yet, ?
keyon only , 36 to 43 ( is 1 PSI low) {35} mine did 36 (both cars)sealevel , are you at sealevel , not Denver?
idle is 30-37 psi. {35} failed hard. the vacuum fails to make the FPR do its job. , mine drops to 30 PSI. a 6PSI drop caused by the vacuum 19" at idle.
gunned TV, must try to go higher, towards keyon only pressure but not quite, FAILS in fact is INVERTED far far worse that.
well now you know why and car this old fails for FPR readings, wild and wrong.
did you do the shunt test?
55psi is typical shows pump is ok this test.
this is how it works, data off good engine,efi and new FPR the right side is with a hand vacuum tool (simulating hard fast deceleration in gear)
the green words are for gingo ,, USA imperial measurements. (we are the odd ducks of the world)
like the last poster with FPR failed, lets do the BUCKET TEST.
if the FPR fuel return line is connected to the wrong hose or the hose is clogged,or metal pipe on right inside frame rail is pinched or connect wrong back aft,
the FPR can not work right at all.
so we disconnect the fpr return line at fpr, and run a new test hose to there and a catch fuel bucket, (with fuel gauge in place on the rail) {30psi}
and if the FPR works now, we know what is wrong. beats spending $60 on a new FPR yet, ?
http://www.fixkick.com