O/T 98 ford F150 has a miss

37chief · Dec 26, 2011

My brother was doing some work on a friends 98 f 150, and while washing off battery he got some water where it shoulden't have been, and now the engine has a miss. He said the plugs are real deep. Will it hurt the computor to remove one plug wire while the engine is running to find the cylinder that has the miss? Any other way to find the cylinder with the miss? Thanks Stan

gregger · Dec 26, 2011

got one of them poniter thermomitor ? real handy for this point and read the manafold at each cylinder and see what one is cooler --

Bryan inIowa · Dec 26, 2011

better to unplug injectors . Be prepared ,,$$ for set of plug wires

huntingreen2day · Dec 26, 2011

Give it time to dry off good and see if the miss goes away.

Anonymous-0 · Dec 26, 2011

spray it with water dispersent, works every time. or let the motor warm up.

robgIN · Dec 27, 2011

pull the wires or coils whichever it has, and blow the water out of the spark plug wells or it wont go away

Gary from Muleshoe · Dec 27, 2011

My 99 F150 would do that anytime it rained, changed all the plug wires and it went away.

Gene-WI · Dec 27, 2011

Use a timing light, the one with the miss won"t light or you"ll be able to see it skip.

Greenday · Dec 27, 2011

It should have coil over plugs no wires.

Bus Driver · Dec 27, 2011

Greenday is correct. No plug wires.

barnE · Dec 27, 2011

Auto zones computer will tell you where the miss is. However make sure you know exactly where the cylinder is. Guy told me #1 on a Ford. At one time I knew, but I forgot. He said, left front. I even changed the injector, plug, and coil over on number 5 to no avail. Turned out he shoulda told me right front. Isn't everything on vehicle considered from drivers seat? I will dig out manual next time or buy one. Dave

eastexan · Dec 28, 2011

(quoted from post at 08:46:54 12/27/11) It should have coil over plugs no wires.

Actually that's incorrect.

The '97s & '98s didn't have the COP's
I believe the COP's (coils over plugs) began with the '99 model year.

Joseph Hunter · Dec 30, 2011

I have a 98 F150 The 5.4L has the coil on the plug, no wires.

NEBeef · Dec 30, 2011

Agree with the above comment - don't fight the computer - use it, it will probably tell you which one is missing...

locojim · Dec 30, 2011

The years of backyard diagnosing are over folks.
Find someone with a scanner and save yourself a lot of torment......

O/T 98 ford F150 has a miss

37chief

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gregger

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Bryan inIowa

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huntingreen2day

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Anonymous-0

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robgIN

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Gary from Muleshoe

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Gene-WI

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Greenday

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Bus Driver

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barnE

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eastexan

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Joseph Hunter

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NEBeef

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locojim

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