1997 Mazda 323

Engine Performance problem
1997 Mazda 323 4 cyl Front Wheel Drive Manual 150000 miles

it started to judder, so it has had an oil and filter change, new spark plugs, new air filter and injection petrol cleaner put into the tank, but it is still doing it mainly in low revs, where is the fuel filter would this help
October 21, 2009.

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