I have a 96 Buick park Ave, Base VIN K
I have had on and off chuggle issues, and problems starting the car after driving somewhere, sitting, and trying to start it back up, for example going to Walmart...
I replaced the fuel pump, CKP, TPS, cleaned the IAC, MAF, replaced the ICM, and a failed coil pack, and just found out I have 6 wet/fouled plugs.
I had a mechanic test it, and say it had low fuel pressure, which is why the fuel pump was replaced, he said it had the right pressure after that, I am not sure I believe him.
I went over my AllData manual, and found out how to remove the FPR, I cleaned it up a bit, cleaned the screen with gas, it was a bit dirty, I noticed a little yellow caked sentiment in there where the FPR seats, so I blocked the hole to the fuel rail inlet and cleaned that out, I then removed the O rings, cleaned and lubricated them with clean engine oil.
When I put it back in, keyed to on to get the FP up, then disconnected the batt cables, and held a towel in front of the schrader valve, and granted I had no fuel pressure gauge, I could see at least a 25-35% gain in pressure, it rushed out of there, when before it pathetically squirted out.
I'll get me a fuel pressure tester ASAP, but my question is this, if that FPR had problems and was limiting pressure when engine demand increased, is it possible that is what fouled my plugs out, and led to a start, run a second or two, then shut off condition.
NOTE: I am sure it is not a security issue, my injectors have 12v, they just were pulsing very weekly..
I do have a PCM programmed & on the way in case the PCM had a circuit go bad in it, but now after seeing the fouled plugs, and the increase in pressure from cleaning the FPR, could I possibly be on the right track as to solving my injectors not pulsing issue?
http://twabbler.net/images/47885332503245858955.jpg
I have had on and off chuggle issues, and problems starting the car after driving somewhere, sitting, and trying to start it back up, for example going to Walmart...
I replaced the fuel pump, CKP, TPS, cleaned the IAC, MAF, replaced the ICM, and a failed coil pack, and just found out I have 6 wet/fouled plugs.
I had a mechanic test it, and say it had low fuel pressure, which is why the fuel pump was replaced, he said it had the right pressure after that, I am not sure I believe him.
I went over my AllData manual, and found out how to remove the FPR, I cleaned it up a bit, cleaned the screen with gas, it was a bit dirty, I noticed a little yellow caked sentiment in there where the FPR seats, so I blocked the hole to the fuel rail inlet and cleaned that out, I then removed the O rings, cleaned and lubricated them with clean engine oil.
When I put it back in, keyed to on to get the FP up, then disconnected the batt cables, and held a towel in front of the schrader valve, and granted I had no fuel pressure gauge, I could see at least a 25-35% gain in pressure, it rushed out of there, when before it pathetically squirted out.
I'll get me a fuel pressure tester ASAP, but my question is this, if that FPR had problems and was limiting pressure when engine demand increased, is it possible that is what fouled my plugs out, and led to a start, run a second or two, then shut off condition.
NOTE: I am sure it is not a security issue, my injectors have 12v, they just were pulsing very weekly..
I do have a PCM programmed & on the way in case the PCM had a circuit go bad in it, but now after seeing the fouled plugs, and the increase in pressure from cleaning the FPR, could I possibly be on the right track as to solving my injectors not pulsing issue?
http://twabbler.net/images/47885332503245858955.jpg