The Jeep 2.5-liter engine is rugged and dependable. Introduced in 1982, the engine is more powerful than the Plymouth Dodge 2.5 liter engine. It is a popular engine and can be found in many CJ-7s, Comanches, Cherokees and Dakotas. If your 2.5-liter engine needs major servicing, set the torque on the bolts per the manufacturer's recommended setting. This is one of the keys to success.
The oil drain plug should never be over-torqued. If it is, the threads will strip out, requiring an expensive repair on the oil pan. The torque for a 1999 engine should be 25 foot-pounds. For all other years, the torque is 20 foot-pounds. This applies to all Jeep models with this engine.
Spark plugs are another area of concern since over-torquing will strip out the threads. Spark plug torque should be 27 foot-pounds for a 2.5-liter Jeep.
The oxygen sensor torque is 22 foot-pounds. Again, do not exceed this recommended torque setting. If you do, chances are great the threads will strip out in the soft iron housing. If stripped, the only solution is a costly repair job.
The fuel pump-to-engine block bolts on the 2.5-liter Jeep should be torqued to 16 foot pounds.
The torque for thermostat housing bolts is 13 foot-pounds and applies to all years.
