Question about 1998 Ford Expedition

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2003 ford expedition missing very bad and won't get over 9 mph.

Ths is the second time its done this. It acts like water in the fuel. Can it be anything else? The fuel filter has been changed. Additives have been put in the fuel tank.

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Check the fuel pressure to the fuel rail. if pressure is low, you may have a clog in the line. If the miss is from start up, start with checking your plugs, fouled and proper gap, and wires. If it does not do this until it warms up, could be an injector. check for codes, some times you will have a code in the computer and no check engine light on. P030* is a miss, the fourth digit tells you what cylinder.

Posted on Dec 13, 2008

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