What signs are there that your spark plugs are failing? Your car is a rough starter. … Your car is a rough idler. … Your engine will sometimes misfire. … Your engine surges. … Your fuel consumption is higher than usual. … Your car isn’t accelerating as it should. HowRead More →

What are the signs your Spark Plugs are failing? Engine has a rough idle. If your Spark Plugs are failing your engine will sound rough and jittery when running at idle. … Trouble starting. Car won’t start and you’re late for work… Flat battery? … Engine misfiring. … Engine surging.Read More →