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On my way to base this weekend my truck started chugging and kept slowing down until it eventually stopped. So i sat there for a couple minut and it started right back up and did fine for about 5 miles and started chugging again in a 1 hour drive I stopped 3 times and waited for it to start back up Did i mention it was raining and had been for the past two days. This is the first time I drove it in the rain so I'm thinking the problem would have something to do with the rain. thanx for any help

What is probably happening is that rain water is getting on the distributor and/or plugs, shorting the ignition wiring out, when the truck stalls for a few minutes the heat from the motor dries it out, then you are able to restart the motor until the next few puddles.

The best fix is to seal the ignition wires to the plugs and the coil. Pull back the boots on each ignition wire at both ends. Get some ignition siliconized sealer or siliconize grease (from a auto parts store) and place a small amount between the boot and the ends and a little around the posts. Slide the boot back to distributor post or plugs over the grease or sealer you just installed. This will seal the it up and prevent water form shorting things up.

Just an old mechanic's trick, but keep a can of wd-40 or likewise with you. Lightly spray the plug wires and the outside of the boots(remove wires one at a time and spray away from the truck). What this does is displace the water that is causing arcing or shorting. And like Kaneguy said get some sealer for the actual connection points of the wires.


~Aaron

I had this problem a while back on another vehicle. every time it rained the carb would ice up, choke the engine out until it died, let it sit for a minute and it would run like nothing was wrong at all until iced up again. I had to replace the hose that went from the exhaust manifold to the air-filter. Never had the problem again.. hope this helps...