Question about Ford F-150
Corrosion in spark plug wires and ignition coil wires, and such, can be sensitive to humidity
Posted on Jun 07, 2015
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Posted on Jan 02, 2017
I just had this exact problem. Wouldn't start or took 15 trys to start, but then ran smoothly. Sometimes a little rough starting on dry days, but pretty much hard starting after rain. I was thinking water in my tank/bad gas, but shooting some starter fluid in my intake didn't give me the initial blast at start up... that certainly indicated that it was electrical...
...but the next day the vehicle stalled in the middle lane of a three lane street, wouldn't restart. After pushing it to the curb, I got to the point where I was checking the wire from the coil to the distributor cap. Two thirds of the wire lifted right out. This wire was in 2 pieces! Amazing that it had been running at all, with this one wire burned down to a whisper, before it broke completely. There were signs of heat/elec damage to the wire also at a point an inch away on this wire.
Replacing the wires is absolutely the first thing to try. It's cheap and easy to do, and it should be done (or the wires inspected/tested) routinely anyway. The coil-to-distributor coil gets more engine heat and more use than any of the indiv spark plug wires and hence wears much faster.
I am betting this wire is much more likely your problem than a coil failure. Good Luck!
Posted on Mar 08, 2009
these vehicles get moisture in the distributor cap. replace those with GM ONLY parts. When you go to install the cap, put a bead of wheel bearing grease on the outside of the cap only where it seals to the distributor base. This will keep out the moisture which causes corrosion.
Posted on Jun 19, 2009
SOURCE: when is raining and i
Change your distributor cap, rotor, and spark plug wires. This should be enough to prevent stalling in the rain.
When these components wear out, the problem is first noted when driving in the rain. If they are not changed, eventually the car will not start, even in good weather.
Posted on Jun 09, 2011
Did you change the plug wires?A good way to find an ignition problem is to take a spray bottle with water and spray your engine.This will show up bad wires or ignition arcing in the dark.Try spraying the coil also.Hope this helps.Good luck.
Posted on Dec 05, 2011
change the distributor cap by friend did the same thing and i wouldent start untill we took the distributor cap off and we seen croshin and we replaced it and it started up like a champ
Posted on Jul 17, 2012
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