Moisture problem

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Apr 25, 2008 | 05:01 PM

Sandman1991

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Joined: May 2004

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From: Winnipeg

Moisture problem

ok i got a 94 f 150, 5.0L, now when ever it is humid out or it rains the truck will not start , or if im driving and it starts raining the truck will die eventually. its like theres a wire thats getting moisture in it causing the truck to die. after it dies it wont start until you leave it sit for a few hours (probably after whatever is gettin moisture in it drys). when the truck is dead it turns over fine its, getting spark to the plugs its getting fuel to the rail but i dont have to tools to see if the injectors are firing.

ive tryed to make it die by pouring water on the distributor, and spraying most wires/connections but everytime i do it, it wont die and when it does die ive already got too many things wet to pinpoint whats killin it

has anyone ever had this problem? or is this a common problem? my guess is not any help/advice would be greatly apperciated thanks

Apr 25, 2008 | 05:11 PM

ElwoodMurphy

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Joined: Feb 2008

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From: Lincoln, Nebraska

Try reversing what your getting wet and wait longer before you move on to the next area. This is not a common problem but not unheard of either.

Apr 26, 2008 | 02:09 AM

Creel

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From: kcks area

Have you checked the dizzy cap for cracks?

Apr 26, 2008 | 06:48 AM

Lazy K

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When it`s raining and you go to start it can you hear the fuel pump running? Also good suggestion from Creel, you may want to think of a tune-up kit of a wire set, dist.cap and rotor.

Apr 26, 2008 | 10:57 AM

Sandman1991

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Joined: May 2004

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From: Winnipeg

yes the fuel pump is running and the cap, rotor,plugs wires are all new i dont think it has anything to do with the distributer cause its gettin spark to the cylinders, and i poured a cup of water on the dist and it didnt do anything i also check last night the injectors are fireing when its dead. so either they are dumping too much fuel or its got something to do with timing. idk this problem is driving me nuts

Apr 27, 2008 | 01:17 AM

ElwoodMurphy

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From: Lincoln, Nebraska

Bump, and if water is the issue then just consentrait on one area of the compartment at a time. One day soak the right side and the next the left side. Process of elimination.

Apr 27, 2008 | 03:16 AM

Creel

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Joined: Sep 2003

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From: kcks area

Re-wrap all your wiring with electrical tape.

Check that the seal below windshield under the hood isnt leaking.

Relace the often over-looked plug wire that goes from coil to dizzy, if it hasn't been changed lately.

Get dielectric compound and put some on all plugs, dizzy cap plug-ins, and coil connections.

STP makes stuff called "wire dryer" spray some on inside of dizzy cap and on the plug wires.

Don't do anything stupid like siliconing the cap to dizzy base, wonderful fun to remove later.

Stop pouring water all over your engine, especially the dizzy.

https://www.ford-trucks.com/forums/7...s-raining.html

https://www.ford-trucks.com/forums/7...damp-rain.html