Question about 1999 Ford Expedition

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Rapping noisein motor sounds like muffler is detached

Sounds like a spark plug is blown out

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Could very well be. Not uncommon on this model.If it is you will most likely have to have a heli-coil installed in head .

Posted on Feb 09, 2009


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I have a 97 chevy cavalier and its running ruff blowing the muffler off and the spark plugs out I put a new fuel filter

If it is blowing the spark plugs out are the threads stripped? Sounds as if you may have the plug wires connected to the wrong plugs. Check firing order.

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I have a 1997 chevy 1500 cheyenne was running rough then died wouldnt start had it towed fuel came out of the muffler when it was at an angle on the tow truck

Sounds like the spark plugs are not firing to burn the fuel. Check to make sure all spark plugs and wires are in good condition (not torn or have a bunch of "white stuff" the white stuff is from the plug wires grounding out on something metal and not delivering the electrical signal to the spark plug.
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The only way to determine what it is would be to remove the sump from the motor, Either way you need another motor as the cost to repair will be greater than the cost to replace.

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Started vehicle-loud bang & started sounding like no muffler-pinpoint to exhaust manifold area. Also when running-there is a spark shooting out-like from spark plug-and sounds like it's misfiring.

you shouldn't have sparks shooting out at anything,, so change that plug wire ,, ( recommend the whole set) the spark that should be going to the plug to fire and burn that fuel isn't happening,, so that cylinder is backfiring,, and it will "guppy" your muffler if it hasn't already, ( Guppy is expand it , so it looks like a Guppy stomach) do not run this motor until that spark problem is fixed,, It could cost you 10 times the price of a set of Plug wires Good luck

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Engine shakes alot and muffler sounds rough and shakes alot

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it sounds like the catalytic converter is clogged up. you may want to replace it

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