My truck began flashing the CEL because of a misfire so said the code Then started bucking and misfiring bad. I changed coil packs plugs and wires. This fixed the problem for 3 days. Today it started bucking again. Neighbor read codes says misfiring on cylinders 1,3 4,6. From what I have read it could be timing belt.
Engine is not original replaced about 5 yrs ago.
Any help will be greatly appreciated.
New developments!!!!
A yr or two ago truck was dying out at hwy speed problem wiring harness was on manifold and shorting out. Had it fixed guy who reconnected wires rerouted wires. So I went to start truck didn't start moved wire it starte . Stopped bucking. Let sit a day wouldn't start turned fan motor off started and began bucking only when in drive or reverse. Please help.
Engine is not original replaced about 5 yrs ago.
Any help will be greatly appreciated.
New developments!!!!
A yr or two ago truck was dying out at hwy speed problem wiring harness was on manifold and shorting out. Had it fixed guy who reconnected wires rerouted wires. So I went to start truck didn't start moved wire it starte . Stopped bucking. Let sit a day wouldn't start turned fan motor off started and began bucking only when in drive or reverse. Please help.