How to Troubleshoot a Spark Plug?

Answer Spark plugs are a crucial part of ignition. Without properly functioning spark plugs, an engine may run poorly or not at all. It is simple to troubleshoot spark plugs, based on visual inspection an... Read More »

Top Q&A For: How to Troubleshoot a Spark Plug

How to Troubleshoot a GM HEI Distributor Spark Plug?

The distributor spark plug on a GM HEI distributor provides the electrical spark necessary to ignite the gasoline inside a combustion engine. However, if you're experiencing a rough idle or having ... Read More »

How to Troubleshoot a Spark Plug Wire?

Automotive ignition wires typically have a solid copper core surrounded by several layers of insulation, and are designed to handle tens of thousands of volts. They transmit the electrical energy f... Read More »

How to Troubleshoot Bad Spark Plug Wire Symptoms?

Spark plug wires deliver the electric spark your engine needs to ignite the fuel in the combustion chamber. When the spark plug wires die, so does your engine. Before replacing the spark plug wires... Read More »

How do you troubleshoot bad spark plug wire symptoms?

If your vehicle is running rough, misfiring, is lacking power or hesitating, there is a possibility that the spark plug wires are at fault. This is generally the case with older vehicles that still... Read More »