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Why did you change the filter? Was it really bad? Could you 'see' debris in it or couldn't blow thru it? Pump may be going out if your original problem for changing the filter has remained(not enough fuel to engine), can be checked by taking off coil wire to cap(BE CAREFUL OF SPARKS), turning the engine with fuel line aimed into can and putting your finger over end of line to check the pressure. You shouldn't be able to stop it very easily. Dokter Denney

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โˆ™ 2005-12-11 17:48:17
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Q: What could be wrong if you just changed the fuel filter on a 1998 Mazda protege but now it is running very rough and will not stay idling?
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