12-21-2014, 01:47 AM
yes, 8v must be done at the 6mm filter banjo bolt
the car has fpreg that love to fail this old, on this car, it works by altitude only !
flow tests are hard, all that matters is spec pressure at all engine loads! the return line runs all the time,...
and the diaphragm is not cracked, leak down test on it, with any vacuum hand pump or 30 seconds.
the fuel pressure must hold steadyat idle and gunning the throttle (not true 16v)
the FSM tests are lacking,. I use hand vacuum tool at vac, nipple on FPreg to run it from min to max. 8psi range. fsm skips this test..oddly...
but there is key on pressure, and running.,test,
day1:
1: caps not stock. checked,
2: crank pulley at 94 ft/lbs.
3: fuel pressure at spec, the FPreg loves to (this old) crack its diaphragm , or inside gets grooved and sticks,) .
runs good but all cars do even with AFR stuck at 12:1 rich, and make more power rich. in fact that is what WOT does. same.
but at idle that will stink running. and cat will run hot there.
12:1 is too rich. and means that the 02 closed loop is failing. badly. 14.7:1 is normal hot idle AFR and will not stink, 14.7:1 is all fuel burnt
every drop, and just a little oxygine left and lots of CO2.
the car has fpreg that love to fail this old, on this car, it works by altitude only !
flow tests are hard, all that matters is spec pressure at all engine loads! the return line runs all the time,...
and the diaphragm is not cracked, leak down test on it, with any vacuum hand pump or 30 seconds.
the fuel pressure must hold steadyat idle and gunning the throttle (not true 16v)
the FSM tests are lacking,. I use hand vacuum tool at vac, nipple on FPreg to run it from min to max. 8psi range. fsm skips this test..oddly...
but there is key on pressure, and running.,test,
day1:
1: caps not stock. checked,
2: crank pulley at 94 ft/lbs.
3: fuel pressure at spec, the FPreg loves to (this old) crack its diaphragm , or inside gets grooved and sticks,) .
runs good but all cars do even with AFR stuck at 12:1 rich, and make more power rich. in fact that is what WOT does. same.
but at idle that will stink running. and cat will run hot there.
12:1 is too rich. and means that the 02 closed loop is failing. badly. 14.7:1 is normal hot idle AFR and will not stink, 14.7:1 is all fuel burnt
every drop, and just a little oxygine left and lots of CO2.
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