The Effects of High Spark Plug Wire Resistance on a Racing Engine?

Answer Spark plug wires are, like exhaust systems and poppet valves, something of a necessary evil for many engines. The best thing a spark plug wire could do for your engine is to disappear entirely -- s... Read More »

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How to Check the Resistance of a Spark Plug Wire?

When your car engine isn't running right, or misfires, start by diagnosing the spark plug wires. Too much resistance in the wire leads to less electrical current getting to the plug. Reduced electr... Read More »

How to Test Spark Plug Wire Resistance?

All electrical components in circuits have a specific amount of resistance to electrical flow, and spark plug wires are no different. The amount of resistance can be too low for some applications, ... Read More »

How to Measure Plug Wire Resistance?

A plug wire transfers the power from the distributor cap to the spark plug. Once the power reaches the bottom of the spark plugs, a spark is emitted from the bottom of the plug. The spark then igni... Read More »

How to Test Spark Plug Resistance Boot Ignition Coils?

The electrical resistance in spark plug wires on vehicles equipped with ignition coils can be measured at the spark plug wire boots. Because increased resistance means that electricity isn't being ... Read More »