Kb06f150

after plug change truck keeps throwing 4 and 5 cylinder misfires and runs like ****

techrep

iTrader: (1)

what brand plugs ? did you replace boots and springs ? did you torque plugs ? what motor do you have ? mileage ?

chimmike

Plug gap? wires installed in correct order?

Kb06f150

did not torque the plugs autolite ht 15 5.4L 3v 06 f150 and there's 198344 miles it had a cracked exhaust manifold for for about 6 months fixed that when I did plugs

SCORGE

Hit or miss on the autolite plugs...
25 ft/lbs for torque.
Probably time to change the ignition coil boots and springs (or the entire pack, your choice).
You can swap out the ignition coils on the misfiring cylinders with known good coils to see if the code follows

Kb06f150

Changed out the bad coils codes were random misfire and misfire on 4 and 5

techrep

iTrader: (1)

and ?

chimmike

still waiting to hear what the spark plug gap is.

When you say the exhaust manifold was cracked and you fixed it; what did you mean by fix it? Replace? how did you fix?

Kb06f150

still getting same codes changed out cam sensor ran good for 5 min then back to ****ty checked injectors

chimmike

You're chasing your tail man. One thing at a time. Eliminate one possibility at a time.