I would replace them at the same time you replace the park plugs on a car built in the last 10 years which is at 100,000 miles. On an older car replace them at the same 100,000 miles unless you have a miss which replacing the plugs does not solve.
To replace spark plug wires on a 3300 Oldsmobile engine, open the hood and remove the wires from the end of the engine. The number of spark plug wires most often corresponds to the number of cylinders your engine has.
You should have C.O.P. ( coil on plug) there are no wires.
replace spark plug wires on a 99 sonoma
Disconnect the battery, and remove the spark plug wires one by one. Replace the spark plug wires in the same order, ensure the connection is firm, and connect the battery.
you have to replace all of your spark plug wires. there is a coil built into the top of each boot that goes over each spark plug. that's why the wires are so costly.
Disconnect the battery, remove the spark plugs wires and boots and remove the spark plugs. Put in the spark plugs, replace the spark plug wires and boots, and connect the battery.
Unplug all the spark plug wires. then loosen the screws holding the distributor on, remove it, put the new one on and screw it in, then replace the spark plug wires
One at a time!
To much resistance in the spark plug wires, replace the spark plug wires.
No you do not need to replace any plugs at all when replacing wires.
Wires may be old and possibly porous and spark is jumping through Replace plug wires
Pull them out and replace them one at a time.