help 2.9 fuel rpoblem

[rcwc28]

hi got an 88 bronco 2 i lose fuel pressure it will run fine at an idle but under load it will die it sputters and chokes and then dies i put a gage on it and it reads 33 psi so thats good right ?? then i reved it 3 times and watched the gauge drop 3 consecutive thime so from 33 psi 20 psi to 0 psi .????
oh and i checked my fpr vaccum line no gas out of it so thats good
i replaced the filter and the pump on the rail???? do you think its in tank pump ??? please help

 

[IMenriched]

hi got an 88 bronco 2 i lose fuel pressure it will run fine at an idle but under load it will die it sputters and chokes and then dies i put a gage on it and it reads 33 psi so thats good right ?? then i reved it 3 times and watched the gauge drop 3 consecutive thime so from 33 psi 20 psi to 0 psi .????
oh and i checked my fpr vaccum line no gas out of it so thats good
i replaced the filter and the pump on the rail???? do you think its in tank pump ??? please help

Before digging into the in tank pump....double check that the timing is correct.

double check for vacuum leaks as well. Could not hurt to see if there is any codes present too.

Not to say that the in tank FP could be still the culprit....just to cover other things 1st before digging into it

 

[RustedRanger]

IMenriched shouldn't the fuel pressure stay the same or rise when it's revved? No fuel from the FPR doesn't mean it's good either. Mine was bad and it didn't leak fuel,I took it and had it checked and it showed fine for them but ran bad again soon after....then I used my cousins tester and found out it was bad. If you do need a FPR Rockauto.com had one for $28.

 

[IMenriched]

IMenriched shouldn't the fuel pressure stay the same or rise when it's revved? No fuel from the FPR doesn't mean it's good either. Mine was bad and it didn't leak fuel,I took it and had it checked and it showed fine for them but ran bad again soon after....then I used my cousins tester and found out it was bad. If you do need a FPR Rockauto.com had one for $28.

Yes, just because it isn't leaking fuel out the little vacuum line on the FPR, is NOT a clear indicator that is Good. only that the internal diaphragm isn't leaking.....FPR can fail in other ways too. they can seize/stick and generate too much pressure which is not good either. or not generate enough pressure.

that is why the suggestion was to get fuel pressure readings and correctly determine if the FPR is working correctly and funnel precious funds towards possible other issues. Sorry if that was misleading earlier

 

[rcwc28]

you guys are right i found that my fpr and my fuel rail is loose although the rail is loose but is still firmly in place but what if my fpr is loose too
oh and mt timeing dead on heck i drove like it is for two weeks like it is now just ran low on fuel so i hit the gas stop and well murpy's law comes in effect and due process of working out the bugs on a new old rig lol hey any of you guys in washington down by tacoma by chance ?????
im stumpped