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Fuel Filters

Car shakes after replacing dirty fuel filter?


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2007-05-17 19:25:24
2007-05-17 19:25:24

were any plug wires or vacuum lines accidently disconnected? Check to insure the filter is the right size for your vehicle. If the filter doesn't fit properly, air can enter the system which changes the pressure and/or velocity of the air system. Sometimes the replacement of the air filter can involve movement of the intake hose from the filter to the carb/plenum. All components from the filter to the intake manifold have to be tight. Check all hoses and clamps. If you removed something, you may want to remove it again and reinstall it to ensure the components are fitting TIGHT. The change to a new filter changes the vacuum (stronger w/new filter) supplied to vacuum hoses which are designed to operate other devices. Obviously, the problem is Air Intake or vacuum, Electrical, OR Fuel. If the plug wires are down tight but the "buttons" on the top of the spark plug are loose, then maybe a piston is not being ignited for combustion of the fuel and air mixture. Sometimes when removing a dirty filter, there is debris still left in the filter container that can interfere with sensors downstream. A weak possibility exists that the Manifold Air Flow (MAF) sensor is dirty. It requires a special cleaner because carb/throttle-body cleaner will destroy it. Another possibility is if you adjusted the air-breathing properties of the fuel-air mixture with the dirty filter in place. It could cause a person to adjust screws to allow more air than normal and when the new filter is intalled, the pistons are seeing too much air for the amount of fuel dispensed by the injectors.

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Could be as simple as a very dirty fuel filter. I would start with replacing the fuel filter.

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Could be a very dirty fuel filter or a failing fuel pump. Try replacing the fuel filter first.


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