6 Symptoms of Bad Spark Plugs | Signs Your Spark Plug is Bad

[@xion637]

It would be good to mention that the brown staining on the white of the spark plug is normal. It is called corona staining and naturally occurs as the high voltage from the coils packs pass through the plug. It doesn't affect the plug's performance.

[@fixit3879]

Yes, that is true. Thank you for mentioning it.

[@inessjohn5234]

What causes the plugs to burn after services on Hyundai i20 2012

[@pakistanmarigan2374]

Does bad spark plug cause low engine oil my car plug is bad its burn 500ML engine oil

[@Physics072]

No plugs do not change oil level. Burning oil is usually bad piston rings. Expensive job. That happens to people that never change the oil or low oil. The rings wear out and you get oil blow bye and black soot out tail pipes and burn oil. Some burn a quart every 1,000 miles. Or you have a oil leak in pan or valve cover.

[@UnaKing-we7vp]

Does bad spark plugs knock engine when it cold or when it's hot

[@fixit3879]

It can be both. When it starts misfiring, it can do both. Good Luck!

[@iamredrunt172]

Mechanic? I consider mechanics nuts and bolt type guys. Transmissions engines etc. Not to sound offensive. How's about calling us automotive technicians. We are like doctors of the machine world.😂😂

[@fixit3879]

Sounds good to me. Thank you!

[@jdghost7590]

Nah we ain't just nuts and bolts buddy.