Rough engine idling is a sign of a bad spark plug wire sound, characterized by shaking and vibration, and occurs due to imbalance from one cylinder to the next. This engine hesitation happens due to a lack of proper conduction of electricity from the distributor to the spark plugs.Īnother sign of misfiring is a popping or sneezing sound when the engine is under load. It is most noticeable when the engine is under heavy throttle demand, and you notice the car has reduced its power. Faulty ignition cables will fail to transmit the required spark from the distributor, which may cause misfiring in the cylinder.Īccording to the National Institute of Automotive Service Excellence, engine misfiring can cause 30% more fuel consumption. One of the first signs you’ll notice when your vehicle has bad spark plug wires is engine misfiring and hesitation.Įngine misfiring happens as a result of incomplete combustion.
SYMPTOMS OF BAD SPARK PLUG WIRES HOW TO
Here’s how to tell that your vehicle has bad spark plug wires: 1. Knowing about the signs and symptoms will come in handy for a timely diagnosis, even before going to a professional for a proper check. Consequences of Ignoring Bad Spark Plug Wiresīad spark plug wires will interfere with the car’s electrical system and thus are hard to go unnoticed.What Should I Do if My Car Has Signs of Bad Spark Plug Wires?.
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