start with dist cap and rotor
you probobly just need to change your spark plugs and wires.
I would replace the spark plugs after 50K, the wires and plugs again at 100K.
Check for spark at the plugs. Check for fuel to the engine.
Spark plugs don't smoke. A bad alternator would cause a dead battery.
Spark plugs, plug wires, distributor cap, rotor, dirt in the injctors.....
Internal engine damage.
That strongly implies that the plug or plugs are not firing at all.
poor installation most likely
Worn spark plugs would cause mis-firing or non firing cylinders, both are no good for the engine, replacing the plugs may stop the knock (Could also be a different problem) But you should replace spark plugs as soon as possible.
Putting in bad fuel can cause theÊengine to buck during acceleration on a 1999 Dodge Durango. There could also be a problem with the fuel filter or dirty spark plugs.
Possible bad coil.Possible bad coil.
The only time I've seen cracked spark plugs was putting them in or taking them out with the socket not perfectly straight.