Checking spark plugs can help find problems

Looking at a spark plug can indicate if your engine has a problem that needs correcting.

Mark Salem, NASCAR Performance Crew Chief

Spark plugs reflect the performance of a well-tuned or poorly maintained engine. Even though spark plugs are easily replaced, inexpensive and immediately improve your engine's performance, they are often ignored until they cause series performance problems.

Bad plugs can cuase overheating, rough running, power loss and even engine failure.

Check your spark plugs regularly and use the graphics as a guide to spot performance problems.

For more information on spark plugs for your vehicle, go to www.autolite.com.

ASE-Master Technician and NASCAR Performance Crew Chief, Mark Salem, owns Salem Boys Auto in Phoenix, a member of the NASCAR Performance Network.