Six Cylinder 4.0 Liter Jeep engine Specs

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Six Cylinder 4.0 Liter Jeep engine Specs

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Six Cylinder 4.0 Liter Jeep engine Specs

All Jeeps with the 4.0Liter engine
Published by TerryMason
11-18-2005

Six Cylinder 4.0 Liter Jeep engine Specs

AMC first introduced the inline 4 2.5L engine back in 1980s on the Cherokee model, and Jeep begain using it on the Wrangler YJ in 1991. The 4.0L engine was a vast improvement over the AMC 4.2L engine. This engine is currently used in the Wrangler TJ model

#1 (permalink)

By TerryMason on 01-27-2008, 11:47 AM

Six Cylinder 4.0 Liter Jeep engine Specs- Technical specs

Displacement	243 cubic inches
Cylinder numbers (front to rear)	1-2-3-4-5-6
Firing order	1-5-3-6-2-4
Spark Plug gap	0.033 to 0.038
Ignition timing	9 to 11 degrees
Idle speed (auto)	600 +/- 70 rpm
(manual)	680 +/- 70 rpm
Engine oil	API SE of SF
- Oil capacity	6qts
Automatic Transmission Fluid	Mercon ATF
- ATF Capacity	4qts

#2 (permalink)

By vuudu on 07-30-2008, 01:57 AM

Re: Six Cylinder 4.0 Liter Jeep engine Specs

Terry, Thank you very much. You have not idea how much you have helped me. I thought, my transmission was the problem after changing my sparks plugs, My Jeep was bought from someone and I think they changed the direction of the distributor cap. After looking at your picture, I finally got it with the position of the screws. Thank you again. Keep doing the great job you are doing.

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