Spark Plug Odyssey Exploring Their Connection to the Check Engine Light

A damaged, old or dirty spark plug can cause the engine to misfire. If the problem is totally 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. I've had my Check engine light on for a couple of months. I took it to the dealer and was told that it was code P0171 - System Too Lean - Bank No. 1 (and ... It can even cause a "Check Engine" light. Next, test the ... Baseline parts control fuel delivery and produce high voltage to fire the spark plugs. Spark plugs have very exact tolerances for peak performance, and if the spark plug configuration is incorrect, it could possibly cause a check engine warning ... This explosion is what moves the pistons and makes the engine run smooth. The spark plug wires deliver the spark from the ignition coil to the spark plugs. If ... If the plug wires are OEM and you have not upgraded changed them since - never - then you can also see how the wires can show a loss in the ... The check engine light will flag when there is a problem and a code will be stored in the computer that will help diagnose the problem. A defective, old or dirty spark plug can cause the engine to misfire. If your check engine light is consistently flashing, please contact our team of automotive ... (1) Defective Spark Plugs or Wires. A malfunctioning spark plug or wire can cause your vehicle to misfire or run erratically, signaling the ...