2000 f150 harley edition... went through a serious downpour friday big puddles... service engine light came on, truck running rough and bad... any body got a hint before I donate to a dealer... any help will be big since vacation coming up... thanks ahead of time...

 

Water got into a plugwell and has shorted out the COP/plug.

A quick scan will tell you which cylinder is misfiring.

You'll likely get lucky and only have to remove the COP, blow out the plugwell and COP to dry it, then reinstall with plenty of dielectric grease.

Worse case, a new COP and plug for each misfiring cyclinder.

Steve

 

just got back from auto zone... code was:

misfire detected cylinder 2
misfire detected cylinder 5

got a short explantion of the problem possibly plugs, wires or these coil things...

driving back was wodering why 2 going bad at once? these 2 got anything in common?

what is a "cop"?

thanks for the input...

 

capticeman, asks What is COP: Coil On Plug.

Here is some reading if interested: http://www.asashop.org/autoinc/feb2003/mech.htm

 

COP=Coil On Plug. No plug wires, individual coil for each cylinder.

You've got two misfiring cylinders because two of them got doused.

Those are both easy ones. Pull 'em out and dry them out with compressed air. You might get lucky.

Steve

Steve

 

just went out and looked under the hood... plugs and cops pretty buried for my ability... will drop it off at a dealer near work who have been good in the past, will pass on your tips... thanks again everybody... resting much easier tonight...

 

i just went through the same thing...i had to replace the COP on cylinder 1...

 

Ok here is the scoop... waited home till wed afternoon... thats 3 full days and they never even looked at it! guy said sorry, you can pick it up and take it elsewhere... so I did... ran down, grabbed the keys and smoked em... that place is off my list! Got on the road, light was still on but wasn't missing anymore, running good... got to a ford dealer and told him the story... he said if its running good don't touch it... he turned off the service light... he said he sees it all the time... alot with guys washing with pressure washers... even the detailers at their place! anyway he said after 6 days they must have dried out... went home, hooked up the boat grabbed a 12 pack and went fishing! caught a 12"er! thanks for the input, all very informative...

 

Cylinder 2 and 5 are at the front of the motor and would see water soon in a rain/ high water situation. The fan can even pull/push enough water onto the motor.
The boots are not sealing at the plug wells, very good.
The COP have potting on their tops. If this is cracked through, water can affect them.
I would at least inspect them for possible faults or you can get into the same situation again when it's not so convient.