140000 mile questions - Jeep Cherokee Forum

So my jeep just cracked the 140,000 mile mark and i got a tuneup on it. The shop i went to also diagnosed my CEL. I knew it was a cylinder 3 misfire but i didnt know it needed a valve job to resolve it. That job is way out of my price range so i was wondering if you guys think i should still lift it in the summer even with it needing a valve job. Also i just picked up a bottle of seafoam and just making sure i should put half the bottle in the gas tank with a full tank? 1998 Sport, 3" Skyjacker lift, BFG 31-10.50-15's on steelies, Teraflex quick discos I traded a sub sandwich for, APN header, Rustys rock sliders, Rusty's 1" drop crossmember, JY transfer case skid, rock lights, four Pro Comp 55W overhead lights, Powertrax No-slip rear, Yukon rear alloy axle shafts, homebrew roof basket, homebrew winch bumper and XRC-8 winch. So my jeep just cracked the 140,000 mile mark and i got a tuneup on it. The shop i went to also diagnosed my CEL. I knew it was a cylinder 3 misfire but i didnt know it needed a valve job to resolve it. That job is way out of my price range so i was wondering if you guys think i should still lift it in the summer even with it needing a valve job. Also i just picked up a bottle of seafoam and just making sure i should put half the bottle in the gas tank with a full tank? Thanks for the help guys. I believe the mechanic said it was a floating valve but not 100 percent sure if i remember that right He quoted me in the price range of $1200. The jeep runs fine and the CEL is off now. The only time the CEL comes back on is the truck is around 210, go in a store for 10 min and come back out and turn it on. Its the heatsoak that messes things up.


Valve Job Jeep 4.0 - Bookshelf

Jeep 4x4 Performance Handbook

Jeep 4x4 Performance Handbook

A very cost-effective enhancement during an overhaul might be a good three-angle valve job, match-porting the heads to the manifolds and cleaning out the ...

Popular Mechanics

Popular Mechanics

Other life extenders include valve guides made of sintered iron impregnated .... line is a 13-hp upgrade of the Jeep 4.0-liter inline Six from 177 to 190. ...

Popular Mechanics

Popular Mechanics

The Explorer's 4.0-liter V6 doesn't have as much low-end poke as the Jeep's V8 or the Chevy's V6, but it still delivers a favorable power-to- weight ratio. ...

Popular Science

Popular Science

The Jimmy suffered mildly in this respect, and the Trooper and Jeep shared ... 186.6 70.3 74.0 4493 54:46 24.3 101.4 44.8 4.0L 16 Push rods; 2 valves/cyl. ...

Jeep Grand Cherokee automotive repair manual

Jeep Grand Cherokee automotive repair manual

It will make the job easier and help keep dirt out of the internal areas of ... valve component servicing can also be accomplished with the engine in the ...

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Mopar Performance - Dodge Ram/Dakota/Durango
Front Cover Gasket (5.2L/5.9L Dodge Truck Magnum/Jeep Engines) ... valve guides, hardened, custom valve seats, premium "5-angle" CNC-machined valve job ...

Jeep 4.0 Head Swap
http://www.off-road.com/jeep/new/40conv.html. Since I have to pass ... Next I had the water jackets welded and a valve job. If I had to do it over again I would have test fitted ...

Tim Weavers 40 Head Article
The cylinder head on the 4.0-Liter Jeep engine will provide more horsepower to ... A 3 Angle Valve Job will provide better seating of the valves when closed. ...

Answers.com - 97 jeep 4.0 valve lash
Jeep question: 97 jeep 4.0 valve lash? Can you answer this question?

JEEP 4.0 / 4.2 LITER REBUILT CYLINDER HEAD
JEEP 4.0 / 4.2 LITER REBUILT CYLINDER HEAD ... New VITON valve stem seals have been installed. All heads are given a three angle valve job. All valves have been vacuum checked ...