this is urgent i need the answer now for my report tnx anyways...
The spark plug wire(s) .
Disconnect the battery, and remove the spark plug wires one by one. Replace the spark plug wires in the same order, ensure the connection is firm, and connect the battery.
On the top of the valve cover under the plastic engine cover. Each spark plug will have a electrical connection on top of it that needs to be removed to get to the plug.
In a 2002 Ford Expedition : ( No , not really ) both the 4.6 and the 5.4 have the Coil On Plug ( C.O.P. ) ignition system , but there is a connection between the individual coil and the spark plug
Worn, faulty or dirty spark plug; cracked or worn spark plug wiring or loose connection.
If you mean that the wire came out of the boot, then pull the boot off of the spark plug and use a spark plug socket to remove the spark plug.
bad spark plugs or bad wire connection to the spark plug
No. On "conventional" ignition systems, i.e., those with typically a single ignition coil and a distributor with distributor cap, the spark plug boot is that portion of the individual ignition wire, running to each spark plug, that terminated the ignition wire at the spark plug and provides the wire's electrical connection to the spark plug. In newer, "plug on coil" systems that do not utilize a distributor and wires, and that are characterized by having an individual ignition coil mounted atop each spark plug, the boot is that portion of the ignition coil that pushes down over and on to the spark plug. Some few designs use a replaceable boot. Most incorporate the boot into the coil assembly.
First look at your plug and plug cap. If that does not do it move onto the plug connection on the CDI box, clean the plug connection and spray it with some contact cleaner. If that does not do it, next look at unhooking the kill switch, I have had a couple of these short out on me before (not on my KTM's however - but still check it out).
Spark plug wire not connected to spark plug? Spark plug wire connected to Wrong spark plug? Vacuum line disconnected? Bad spark plug or wire?
To change the spark plugs in a Chevy Celebrity: 1. Give the spark plug boot a twist to free it up from the spark plug, then pull on the boot to remove the spark plug wire from the spark plug. 2. Use a 5/8" spark plug socket with an extension and ratchet or breaker bar to loosen then remove the spark plug. 3. Set the gap on the new plug to .045" then screw it back into the spark plug hole in the head. Tighten the spark plug and replace the spark plug wire. I change the spark plugs one at a time to keep from getting the spark plug wires on the wrong spark plug.
Champion Spark Plug QC12YC