What is a spark plug?Spark plugs are a crucial part of the vehicle’s ignition system. They provide the spark that ignites the air-fuel mixture inside the engine, creating the chain-reaction that generates the engine’s power. Show
 How does the spark plug work?The spark plug turns high voltage electricity from the ignition coil into a strong spark inside the engine. This ignites the air-fuel mixture, creating power. What are the symptoms related to a bad spark plug?When spark plugs fail, the engine will struggle. The check engine light will come on, and it may appear either solid or flashing. The driver would likely notice one or more of the following: engine vibrations, rough idling, poor gas mileage, excessive cranking time needed to start the engine, and power loss or surging. In extreme circumstances, the engine may stall or fail to start. Can I drive with a spark plug problem?The car will run with a spark plug problem, but it's not wise to keep driving it this way. If a spark plug isn't working, unburned fuel from the engine will get into the exhaust at a higher rate, causing problems for the catalytic converter. If the converter gets ruined by this unburned fuel, it will lead to a costly repair. How often do spark plugs need to be replaced?Spark plugs do eventually wear out, and failure is most common after 100,000 miles of use under normal driving conditions. But that can be greatly shortened by harsh conditions or leaking fluids. We're offline for a tune-up, we'll be up and running smoothly very soon. In the meantime, here are some other options available: Visit an Sign up for View us on Social Media We appreciate your patience – for your next visit: 15% offyour next purchase. Enter coupon code: in shopping cart. We look forward to serving you, Conditions inside an engine are predictably brutal. As much as modern engines are engineered and built to reduce friction among moving parts, friction – and the heat that goes hand-in-hand with friction – is unavoidable as cylinders get pumping. Depending on engine speed, spark plugs fire 1000 times or more every minute. Wear and tear is a real issue. No matter how efficient an engine is, a tiny bit of material is left after each combustion. These deposits build up on the spark plugs over time, resulting in uneven performance and even lower gas mileage. In addition, the gap that a spark has to travel to ignite the fuel/air mixture gets larger and larger as the spark plug ages thanks to heat, particulates and normal wear and tear. That’s why it’s important to have your spark plugs checked (and replaced) according to the manufacturer’s maintenance schedule. Superior materials may have extended the average spark plug’s life, but they won’t last forever. Sort By: Results Per Page View: 2012 Jeep Grand Cherokee WK Spark Plug
Sort By: Results Per Page View: How often should you change spark plugs Jeep Cherokee?Typically, spark plug replacement is recommended after 30,000 miles or so.
How often should you change spark plugs in a Jeep?Every 60,000 Miles
At 60,000 miles, if you have a 2.0L engine, you'll need a service to replace the spark plugs in addition to scheduling the services required at every 20,000 and 30,000 miles.
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2012 jeep grand cherokee 3.6 spark plug replacement
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