96' 1.6L 16-valve 2-door 2WD 5 speed, 205k miles. Fuel pressure in range throughout all tests at 38psi. The pressure never fluctuates, not with 23 or 20 inches vac or even if vac hose unplugged from FPR and plenum port blocked. Constant pressure not good. Just trying to get confirmation that FPR certainly seems bad. Fuel Filter new as well.
Thanks for any advice.
Leak down test was good, held 8" for over 2+ minutes. Vacuum at plenum good and constant. No issues with cranking hard at all.
To know what has transpired I'll give detail, but only read if you desire.
Started stumbling horribly out of the blue. CEL popped on and, on occasion blinking. DTC was misfire on Cyl 3. Cylinder 3 wire tube had hole burnt clear through side of it about 1'' from plug. Put full set wires, cap and rotor NO CHANGE.
Bought set NGK stock plugs and put ONLY #3 in NO CHANGE.
Put rest of plugs in and VIOLA ran smooth as silk. All gapped .28
Next day started stumbling ONLY at first 1/4 of acceleration in each gear but smooth on WOT. 2 days later went to crap again, CEL blinking and this time DTC was multiple misfires. Stumbles at idle but no stall and also throughout entire acceleration range.
All 4 cyl's range 70 to 80 psi on compression test.
My thoughts were Coil (Distributor) or FPR.
Now, with FPR not impacting fuel pressure no matter the vacuum applied, I think that is it. Both are on order.
Thanks for any advice.
Leak down test was good, held 8" for over 2+ minutes. Vacuum at plenum good and constant. No issues with cranking hard at all.
To know what has transpired I'll give detail, but only read if you desire.
Started stumbling horribly out of the blue. CEL popped on and, on occasion blinking. DTC was misfire on Cyl 3. Cylinder 3 wire tube had hole burnt clear through side of it about 1'' from plug. Put full set wires, cap and rotor NO CHANGE.
Bought set NGK stock plugs and put ONLY #3 in NO CHANGE.
Put rest of plugs in and VIOLA ran smooth as silk. All gapped .28
Next day started stumbling ONLY at first 1/4 of acceleration in each gear but smooth on WOT. 2 days later went to crap again, CEL blinking and this time DTC was multiple misfires. Stumbles at idle but no stall and also throughout entire acceleration range.
All 4 cyl's range 70 to 80 psi on compression test.
My thoughts were Coil (Distributor) or FPR.
Now, with FPR not impacting fuel pressure no matter the vacuum applied, I think that is it. Both are on order.