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Went to the wrecker on the weekend to have a go at getting a fuel pump. I dropped the tank, then undid the ring clamp around the pump. The next thing my gregories manual says is "remove the black retaining ring". Try as i might, i couldnt get the thing off. anyone with any tips? does it turn, or pull off? i literally bashed the crap out of this thing with a screwdriver and had to give up, i couldnt get it off!!!
Im going to swap fuel pumps to see if it fixes my overly rich idle problem...
It unscrews, but will be very tight. Don't know what model you are talking about, but it should have raised thingies all round it, and usually takes a special tool to get it off. Ask the wrecker, he might lend you one.
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Why do you think replacing the pump will fix an engine that is running rich at idle. The pump delivers the same amount of fuel at idle or WOT. It may be the 02 sensor.
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When cubes aren't enough.
Blow NOS!!!
12.3s @ 110mph so far
why do you think its the o2 sensor - its not used until the car is hot. this only happens when cold. the car also wont rev past 2500 or so, feels like lean mixture to me.
it just doesnt rev; i dont know how to tell if its running rich or lean. the cars done a lot of k's (345,000) and is dual fuel. my suspicion was injectors, ive swapped them. swapped map sensor. havent swapped fuel pump or coolant temperature sensor. runs rich on a cold start and blows black smoke.
Black smoke suggests it is running rich, blue smoke for oil usually. Don't know were to point you. To test the o2 sensor get a multi-meter and make a contact to the os sensor wire in the cabin near the computer. The readings should flucuate between 0v to 0.8v if it sits at a constant voltage the sensor is stuffed.
__________________
When cubes aren't enough.
Blow NOS!!!
12.3s @ 110mph so far
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