Unleashing the Truth Can Spark Plugs Illuminate the Check Engine Light's Enigma?

Until then, the systems are "not ready" and do not throw a DTC, nor will the MIL be lit. Bad plugs or wires would cause some sort of misfire, ... Old or worn spark plugs can cause your engine to knock and misfire, resulting in disastrous and costly consequences. Here are four signs that it's time to ... I'm assuming you do have a turbo car and would like to know how much they charged for spark plug replacement for the numbers I've heard are ... The Check Engine Light (CEL) should NOT come on after doing a spark plug change properly. There is NO tune-up reminder that needs to be reset, ... The check engine light is usually related to engine misfires. Keep in mind that a check engine light could also be stimulated by other things, not just an old ... A bad spark plug can cause the check engine light to not just come on, but to flash repeatedly. You're supposed to pull over and shut the engine ... So here are some questions: 1. What is the EGR valve and what does it do? 2. What is the condition/color of the old plugs indicitive ... You probably did not properly torque the new spark plugs. If they are even a little bit too loose you will get a check engine light after a few days of driving. A broken, old or dirty spark plug can cause the engine to misfire. If the problem is completely ignored or you continue to drive, this can spread to the spark ... I never thought NEW spark plugs could cause a check engine light to come on. ... Old 16th March 2016, 23:39. IFLY152 IFLY152 is offline.