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Car Forum / Ford / Ford Trucks / December 2008Engine misses after rainy night
2000 F250 SD, 53,000 miles, standard cab, 8' bed, 6.8L V10, automatic tranny. I bought it new, June, 2000. Problem started early in 2008. I don't have a garage, so the truck is parked outside. After a rainy night, truck starts, but immediately it runs on maybe 5 cylinders. Let it run to warm up and dry out for 20 minutes and the missing never stops. It's worse under load. First time it happened, I drove it 9 miles to work and 9 hours later drove it home. On the way I bought a bottle of ISO HEET and poured it in the tank Let it set overnight. Problem went away until the next rainy night. I have a good sealing gas cap, so I don't think water is getting into the fuel that way. I still feel like it's an electrical problem, but the engine is dry and I've checked all the wiring I can and don't see any things wrong. Anybody got any ideas or solutions?. > 2000 F250 SD, 53,000 miles, standard cab, 8' bed, 6.8L V10, automatic > tranny. I bought it new, June, 2000. Problem started early in 2008. I don't [quoted text clipped - 8 lines] > the engine is dry and I've checked all the wiring I can and don't see any > things wrong. Anybody got any ideas or solutions?. Next time it's damp/rainy, pop the hood before you start it. I'll bet you'll see arcing from some ignition components. IF you can't see it, mist over the engine with water from a spray bottle (like an old windex bottle or something) If it's not that, it might be something on the low voltage side grounding out when wet, which will be harder to isolate. nate  Signaturereplace "roosters" with "cox" to reply. http://members.cox.net/njnagel >> 2000 F250 SD, 53,000 miles, standard cab, 8' bed, 6.8L V10, automatic >> tranny. I bought it new, June, 2000. Problem started early in 2008. I [quoted text clipped - 15 lines] > > nate The first time the miss fire happened, it was early in the morning, very little sunlight and I did look at the engine just after it started. I didn't see any obvious arcing. With my luck, it's your idea about the low voltage grounding out and being harder to find. Thanks for your ideas. > 2000 F250 SD, 53,000 miles, standard cab, 8' bed, 6.8L V10, automatic > tranny. I bought it new, June, 2000. Problem started early in 2008. I don't [quoted text clipped - 8 lines] > the engine is dry and I've checked all the wiring I can and don't see any > things wrong. Anybody got any ideas or solutions?. Guessing... a cracked distributor cap? >> 2000 F250 SD, 53,000 miles, standard cab, 8' bed, 6.8L V10, automatic >> tranny. I bought it new, June, 2000. Problem started early in 2008. I [quoted text clipped - 11 lines] > > Guessing... a cracked distributor cap? Did they still use distributors in Y2K? I was thinking along the same lines, but perhaps a cracked coil pack housing instead. nate Signaturereplace "roosters" with "cox" to reply. http://members.cox.net/njnagel >2000 F250 SD, 53,000 miles, standard cab, 8' bed, 6.8L V10, automatic >tranny. I bought it new, June, 2000. Problem started early in 2008. I don't [quoted text clipped - 8 lines] >the engine is dry and I've checked all the wiring I can and don't see any >things wrong. Anybody got any ideas or solutions?. My guess would be bad coil/plug boots allowing water into coils/plugs. Lugnut > >2000 F250 SD, 53,000 miles, standard cab, 8' bed, 6.8L V10, automatic > >tranny. I bought it new, June, 2000. Problem started early in 2008. I don't [quoted text clipped - 12 lines] > > Lugnut I'm with Lugnut. My Corvette had one bad boot to the coil. I found it using a vacuum cleaner hose up to my ear and heard a ticking noise on #8. Replaced that wire, the ticking and the missing went away. It is a 2000 with 40,000 miles. I replaced the rest of the wires while I was at it. Has not missed since - wet or dry. Bob Drake, Alex., VA > > >2000 F250 SD, 53,000 miles, standard cab, 8' bed, 6.8L V10, automatic > > >tranny. I bought it new, June, 2000. Problem started early in 2008. I don't [quoted text clipped - 12 lines] > > > Lugnut Must be an electrical system gremlin out there. My wife drives home and explains that her Seville has a "Service Electrical System" message in the Information Center. Oh $%@&%#, there goes another $500. She said that she went through a car wash and noticed it after that. She also said the traction control would not go on. I took it out - it needed gas. Pressed the "Reset Indicator" button - message went away - never came back. Another lucky stroke. Bob Drake, Alex, VA Ford Ranger (Never a Problem!) Corvette Seveille id try new plug wires first. put dielectric grease inside the boots before installing.. ---------------------------------------------------------------- http://www.minibite.com/america/malone.htm Water leaking from heater hose onto spark plug cap? Plug wires corroded at connection to spark plug? (COP) Coil on plug connector (wire inside the boot that connects to COP is only 3.99 at autozone)corroded? I never looked at a V10 spark plug setup. > 2000 F250 SD, 53,000 miles, standard cab, 8' bed, 6.8L V10, automatic > tranny. I bought it new, June, 2000. Problem started early in 2008. I don't [quoted text clipped - 8 lines] > the engine is dry and I've checked all the wiring I can and don't see any > things wrong. Anybody got any ideas or solutions?. |
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