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Old June 29th, 2011, 10:29 AM   #1
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Default 4.3 misfire

Ok my 4.3 has over 200K and it HAD a really bad miss in it I could tell it was in the ignition because it would pop when it missed (extra unburnt fuel).

I tried new 3 sets of cap/rotor, wires, one set of plugs. Nothing worked, it finally through a multiple misfire code and a crank and cam position sensor code. I replace both sensors with no luck. Then it through a cam and crank out of position code, this could be either a worn timing chain or distributer gear.

I pulled the distributor to find a worn out gear and replaced the entire distributer. This cleared up my miss and the truck now runs great.

This was the end to my month long and not to mention $$expensive$$ hunt.

Im just posting this to maybe help someone else out down the road
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Old June 29th, 2011, 10:32 AM   #2
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Thanks for the info. its nice to see someone post the out come of a long hunt.
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