Questions Covered in This Guide• What are the basic differences between nickel, platinum, and iridium spark plugs?• How do their service lives differ?• How do their costs compare?• What are the perfor
Questions Covered in This Guide• What is an OE number?• Why is appearance alone not enough for matching?• Why does OE matching matter for ignition coils?• Why does OE matching matter for spark plugs?•
Questions Covered in This Guide• Why is OE matching the safest starting point?• Why does heat range matter?• Why must thread size be correct?• What is spark plug reach and why is it important?• How do
Questions Covered in This Guide• Is OE number the best way to choose an ignition coil?• Can vehicle model and engine code be used for selection?• Does connector structure need to be checked?• Is housi
Questions Covered in This Guide• What is carbon fouling?• What is oil fouling?• How does heat range mismatch cause fouling?• How do combustion condition problems lead to spark plug fouling?• What symp
Questions Covered in This Guide• How does heat exposure cause ignition coil failure?• Why is vibration harmful to ignition coils?• How can moisture damage an ignition coil?• What is voltage stress and
Questions Covered in This Guide• What is the relationship between hard starting and spark quality?• How does electrode wear affect starting?• How does spark plug gap change affect starting?• What is t
Questions Covered in This Guide• What is engine misfire?• How can an ignition coil cause misfire?• What is the difference between single-cylinder and multi-cylinder misfire?• What happens if you keep
Questions Covered in This Guide• What symptoms do bad ignition coils and bad spark plugs have in common?• Which symptoms are more likely to point to an ignition coil?• Which symptoms are more likely t
Questions Covered in This Guide• Can a bad spark plug cause hard starting?• Why does a bad spark plug cause rough idle?• Can a bad spark plug cause weak acceleration?• Why can fuel consumption increas
Questions Covered in This Guide• What does engine misfire look like when an ignition coil is bad?• Why can a bad ignition coil cause rough idle?• Can a bad ignition coil lead to hard starting?• How do
Questions Covered in This Guide• What is a no-spark condition?• What are the common causes of no spark?• Can an ignition coil cause no spark?• Can a spark plug cause no spark?• Should wiring and the c
