check engine light came on,code reader says misfire on #3 cylinder on 2002 Dodge Ram 1500

I had my plugs changed about two months ago because I noticed a slight miss.NOW MY CHECK ENGINE LIGHT IS ON AND CODE READER SAYS MISFIRE ON #3 CYLINDER STILL HAS SLIGHT MISS ESPECIALLY WHEN YOU FIRST START THE ENGINE.ANY IDEAS WHAT COULD BE THE PROBLEM??

by in West Monroe, LA on April 19, 2011
1 answer 4 comments
ANSWER by on April 19, 2011
i would look at the wires, cap and rotor. all these are bascis of a complete tune up. this is a good start before talking about injectors or something else. thanks for using repairpal Roy
COMMENT by on April 25, 2011
2002 dodge does not have distributor cap,rotor, or plug wires. I have changed plugs and replaced the coil pack on #3 cylinder to no avail.
COMMENT by on April 25, 2011
which motor?? 3.7, 4.7 or 5.2 Roy
COMMENT by on April 26, 2011
the 4.7 litre engine. I have 90,000 miles on the motor but it does'nt use any oil or run hot also there are no ticks or knocks in engine.
COMMENT by on April 26, 2011
the codes that are displayed are a best guess estimate of the missfire. it may be another coil that is missfiring.. i suggest a shop to test all coils for failure to be sure of the problem. Roy