fox fuel pump

[pete76]

i have read that the pressure these cars operate is around 60-70 lbs.
when i take the line off right after the fuel filter(cannister)i only get a small flow of gas,and nothing that even resembles any kind of pressure,one guy told me gas should be shooting out of that thing,I know it will not get it's full pressure without running,but should'nt it atleast pump the gas to the front of the car?any way i could have "worn out" the pump driving it around with a leaky fuel distribution box for a few days?as i recall now the car quit on me.is there any way the accumulater has gone bad?

[stevethefolkie]

The easiest way I know to kill a fuel pump is to drive around with less than 1/4 of a tank of gas most of the time - the fuel cools the pumps - less fuel = less cooling - shorter life.

You need to deterimine a number of things (this is rather redundant - I'm pretty sure I responded to another of your posts)

1) is the fuel pump working? It should come on when you first turn the ignition key and then cut out until you start to get an igntion signal (meaning the engine is running) back from the hall sensor - you can jumper the fuel pump relay OR run a secondary power supply directly to the fuel pump to see if its working - if you do the secondary power supply be careful about sparks ... if the fuel pump isn't working then replace it - the car is - after all - pretty old. Things do wear out.

2) If the fuel pump seems to be working - take a pressure reading on the fuel line right before the fuel distributor - if the car won't start then obviously you'll have to either jumper the FPrelay OR run the secondary power supply to the pump - again - watch sparks

3) if you've got pressure at the distributor - and the car won't start - check for flow at the injectors - if it does start but then craps out when you un-jumper the FPRelay or take off the power supply to the pump -
then change the relay for a new or known - good used one - if that doesn't fix it then suspect a lack of signal from the HAL sensor indicating that the engine is running.

[lailaigogo]

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