Question about 1997 Ford F150 Regular Cab
I have a 1997 f150 4.2 v-6 with low c ompression in 1 and 3 cylinder and oil build up in the intake also plugs are a mess except #1
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Posted on Jan 02, 2017
The code description is a giveaway.
It could be one of the coils on the coil pack. Most coils nowadays do two cylinders each. This way car makers can get away with one coil for two cylinders.(lowers costs) One spark fires the air fuel mix in one of the cylinders and the other will fire the cylinder on the exhaust stroke. If the coils are removable, and you are fairly handy with cars,switch two around, the problem will follow the bad coil.
Posted on Dec 02, 2008
check for a blown head gasket or burnt valve, being that old prob has a lot of miles on it may need a complete overhaul
Posted on Mar 05, 2009
Its a problem with the compression ring,it could be stuck or broken,you can try pulling the spark plug and pouring in some Marvel mystery oil or Seafoam,iif the ring is stuck this might free it.
Posted on Apr 14, 2009
Les.. After trying everything else that made sense, I installed 2 new coil packs and have never had a misfire since.. I replaced both just to keep things even on both sides.. OCD, lol.....
Posted on Oct 10, 2011
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