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How do you replace the fuel filter located on a 1998 Cadillac DeVille?
Wiki User
∙ 8y ago
The fuel filter on all 4.6 deville is located on the drivers side bottom UNDER the car right in front of the rear wheel right under the rear passanger door. First remove the positive battery cable next remove the cover it' that big silver plastic cover that says Cadillac it has like 6 black plastic acorn shaped nuts. next in front of you on the drivers side you are going to see a black steel pipe this is the fuel rail conected to the fuel rail is a valve like the kind on your tires to inflate them you have to relieve the built up gasoline that is in the line because if you don't when you try to remove your filter the preasure in the line is going to spray you with gas all over your face it happens remember its a fuel injected car every time you turn the key the pump builds preassure in the line use a tire gauge or small screw driver also put a rag under the valve this will keep gas from going all over the place after there is no preassure you are ready to start. ok now The fuel filter has a soldered nut this wont move so all you have to do is put a wrench on it and the fuel line has another nut this one does turn so put a wrench on this one and holding on to the wrench that is soldered to the body of the fuel filter turn the one connected to the fuel line COUNTER CLOCKWISE the nut connected to the fuel line sometimes gets rusted so WD-40 prior to starting the removal or some other type of rust loosener might help. the other line just has a clip. press the clip and twist and pull the filter off. To get a better idea look at your new filter and it will all seem clear
Follow the fuel line from the tank to the engine and you will find the filter. You need special tools available cheaply from the parts store.
two wrenches turn fitting slightly till gas starts to drip let set till pressure is off remove and replace in 10 mins
Wiki User
∙ 8y ago
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