Where are the spark plugs in a Jeep Wrangler?
The 2007 to 2011 Wranglers equipped with the older 3.8L V6 engine allows for easy access to the driver’s side spark plugs. Locate the three spark plug wires on the driver’s side of the engine. With a twisting motion, remove each spark plug wire from its companion spark plug.
What kind of spark plugs do Jeep Wrangler use?
The later model 4.0 engine (2000 and later) is what is known as a DIS (Distributorless Ignition System) which is far fussier about what spark plugs it likes to run well on. A DIS ignition system also fires the spark plugs twice as often which means a conventional copper-core spark plug only lasts half as long in this type of engine.
When did the Jeep 4.0L ignition switch over?
Please note: This writeup is only for some year 2000 Jeeps with a 4.0L and all 2001 and later 4.0’s (it should apply to Cherokees, Grand Cherokees and Wranglers). This is due to a switch over in mid-year 2000 by Jeep from the old distributor based ignition system to a more modern (and cheaper to maintain) distributorless ignition system.
How many spark plugs are in an inline 6 engine?
Briefly, there is one spark plug for each cylinder in your engine (Inline-6 equals 6 spark plugs).
When did the Jeep Wrangler get its first engine?
As for the Wrangler, it first got this powertrain in 2007. Overall, it’s a pretty capable engine with a good performance both on and off the road. Here, we have a relatively powerful engine with a great price-quality balance.
The later model 4.0 engine (2000 and later) is what is known as a DIS (Distributorless Ignition System) which is far fussier about what spark plugs it likes to run well on. A DIS ignition system also fires the spark plugs twice as often which means a conventional copper-core spark plug only lasts half as long in this type of engine.
Where can I get a wiring diagram for a Jeep Wrangler?
Hi Kris, the wiring diagram is a PDF document. All you have to do is click the image of the wiring diagram and it should open in your browser. If it doesn’t open, then all you probably need to do is download the free PDF viewer which you can get here http://get.adobe.com/reader/.
Do you need a spark plug for a 4.0 engine?
Because the spark plugs fire twice as often with a DIS-equipped 4.0L engine, conventional spark plugs like the NGKs a few keep recommending will only last half as long in the newer DIS engines as they would in an older non-DIS engine.
Please note: This writeup is only for some year 2000 Jeeps with a 4.0L and all 2001 and later 4.0’s (it should apply to Cherokees, Grand Cherokees and Wranglers). This is due to a switch over in mid-year 2000 by Jeep from the old distributor based ignition system to a more modern (and cheaper to maintain) distributorless ignition system.