Question about 2002 Ford Expedition

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2002 FORD EXPITATION SPARK PLUG BLEW OUT DAD TO GET A KIT PUT PUT IT BACK IN, KNOW IDLES RUFF AND THERE A FLUFFER SOUND BETEEN 20 AND 40

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Sounds like the plug is not seating right or tight enough. That fluffer sound is the loss of compression seeping around the plug.
Those timecert or heli-coil kits, if they aren't done right, that's the problem you end up with.
You have to be darn careful not to get any dirt or shavings in the cylinder, or your in big trouble.
The best thing to do is have a professional mechanic do it, or replace the head with a new one or from a juck yard.

Posted on Apr 28, 2010

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When the plug blew out, it most likely stripped the threads and took some metal with it. im sorry to say this, but those re-threading kits never seal like they should because the alloy is different at the plug holes than the rest of the head to make them stronger since they are a natural weak point, being a hole and all. all that sound is really is loss of compression at higher rpm's. because its only one cylinder thats losing compression, it wont take an enormous toll on your motor but it could weaken the surrounding area on the head and cause it to warp along with cause the rings on your piston to expand and contract wildly because of the pressure changing so much so fast. this might cause ring failure which can, over time, destroy your engine. i'd look into getting a new head if thats the case. your valves, springs, etc. are probably fine so id get a bare head and a top end overhaul kit (o-rings, head gasket, etc.) which could run you upwards of $1000 in labor and parts if you "know a guy", were talkin close to $2500 in real terms at 50 an hour for labor. if you can, and have ALL of the nessecary tools, do it yourself. youll save big money. but if you have no idea what a valve seat or pushrod is...don't touch it.

Posted on Apr 28, 2010

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Recheck sparkplug gap and check pcv valve for proper ventalation of burnt gases in crank case . take pcv valve out and rattl it by shaking it if it makes a rattling sound it is ok if not replace pcv valve also make sure oil level is not way over on dip stick. if so drain and corrcet to specification level it calls for .

Posted on Apr 28, 2010

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