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Replace spark plugs ford 5.4 ci engine?

Updated: 10/21/2022
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14y ago

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Replacing spark plugs on Ford 3 valve V8 can be dangerous because they can seize in the block and break off, leaving you a very expensive fix. I am a mechanic and here is how i did mine. Drive the car to operatingtemperature. Then start taking out each coil pack, after removal blow each chamber out with air gun. By now the car should be just mild hot to touch. Turn each plug 1/4 of a turn and then spray penetrating oil in the chamber just up to the plug nut. Leave soak for 1 hour, then slowly turn each plug 1/4 to half a turn then move to the next one until they all become easy feeling to completely remove.

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Q: Replace spark plugs ford 5.4 ci engine?
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