Wire resistance varies significantly by manufacturer and application anywhere from a few ohms to 1000 to 3000 ohms/ft.
Engine manufactures have a nominal resistance per length (typical) recommendation and a maximum limit.
The typical maximum is 10,000 ohms.
Suggest you compare wire resistance of all wires. Any wire that is more than double the others would be suspect.
What you can't measure with an ohm meter is breakdown voltage (leakage) of the dielectric. Plug wires don't last forever and on modern vehicals should be replaced at 75k to 100k miles minimum.
SOURCE: engine wont start unless number
Its possible the spark plug is damaged. Change the plug.
what happens if you plug the wire back up after its running? Does it still miss?
SOURCE: ohms resistance of spark plug wires
Watch the readings. The readings may jump around at first but should stabilize after a few moments. A shorter wire with a length of 12 inches may test out between 6.00 to 7.00 ohms and a longer wire of 30 inches may measure out between 9.00 and 11.00. A 24-inch wire may come in between 7.50 and 9.00 ohms. All of the above readings would put you in a normal range. Any reading of less than 6.00, regardless of the length, would represent low resistance, and that wire should be replaced.
Read more: How to Test a Spark Plug Wire on a Car ' eHow.com http://www.ehow.com/how_2296047_test-spark-plug-wire-car.html#ixzz1t1vZ7kGJ
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