Valve Cover Gasket Replacement - Gunk City.
11-24-2013, 01:48 PM
#16
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Join Date: Oct 2012
Location: USA
Posts: 1,744
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2 Posts
Year: 1998
Model: Cherokee
Engine: 4.0L i6
Here are some more ideas if you're looking to throw some money at the XJ.
Service items
Things to inspect
Optional service items before they die on you
Optional upgrades
Service items
- All fluids: Oil, coolant, differential, transfer case, transmission, power steering, brakes.
- Cooling system: Radiator, cap, water pump, thermostat, all hoses, Fan clutch
- Flush cooling system
- Replace distributor, plugs, wires, coil.
- Clean Throttle body
- Battery
- Battery Cables
- New brakes/rotors.
- New front and rear wipers
- Serpentine belt
- Air filter
- O2 sensor
- Valve Cover Gasket (leak) and 2 PCV valves
- Oil filter adapter (leak)
- 4 new shocks
- Tranny mounts
- Motor mounts
- Seal rust (floorpans, doors, rockers, etc)
Things to inspect
- Replace tires?
- Replace Clockspring? (airbag light, no horn, no cruise control)
- Any burnt out bulbs?
- Check exhaust (muffler and catalytic converter)
- Cracked Exhaust Manifold?
- Any cracked vacuum lines?
- Secure rattling 4WD shifter?
- Driver’s door check pin and bracket (popping door?)
- Fix all windows (motor, bypass lock switch)?
- Flush clogged radiator core?
- Hood Release Cable?
- Replace Rear Liftgate Struts?
- Replace worn suspension (Front Lower Steering Stabilizer, Front SwayBar Bushings and End Links)
- Replace worn U-joints
- Replace worn Wheel bearings
- Squeaky steeering wheel? Lube Steering Column Boot (from inside)
Optional service items before they die on you
- Alternator
- CPS/CKP sensor
- Replace TPS (throttle position sensor)
- Replace IAC/ICV (idle control valve/motor)
- Starter
- Fuel pump and filter
- Temperature sending units (2)
Optional upgrades
- Headlight harness upgrade
- New Headlights
- Transmission cooler
- Replace center console
- Replace carpet
- Replace seats
11-24-2013, 04:02 PM
#20
::CF Moderator::
Join Date: Aug 2011
Location: Prescott, Az
Posts: 43,971
Received 1,559 Likes
on
1,263 Posts
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Here are some more ideas if you're looking to throw some money at the XJ.
Service items
Things to inspect
Optional service items before they die on you
Optional upgrades
Service items
- All fluids: Oil, coolant, differential, transfer case, transmission, power steering, brakes.
- Cooling system: Radiator, cap, water pump, thermostat, all hoses, Fan clutch
- Flush cooling system
- Replace distributor, plugs, wires, coil.
- Clean Throttle body
- Battery
- Battery Cables
- New brakes/rotors.
- New front and rear wipers
- Serpentine belt
- Air filter
- O2 sensor
- Valve Cover Gasket (leak) and 2 PCV valves
- Oil filter adapter (leak)
- 4 new shocks
- Tranny mounts
- Motor mounts
- Seal rust (floorpans, doors, rockers, etc)
Things to inspect
- Replace tires?
- Replace Clockspring? (airbag light, no horn, no cruise control)
- Any burnt out bulbs?
- Check exhaust (muffler and catalytic converter)
- Cracked Exhaust Manifold?
- Any cracked vacuum lines?
- Secure rattling 4WD shifter?
- Driver’s door check pin and bracket (popping door?)
- Fix all windows (motor, bypass lock switch)?
- Flush clogged radiator core?
- Hood Release Cable?
- Replace Rear Liftgate Struts?
- Replace worn suspension (Front Lower Steering Stabilizer, Front SwayBar Bushings and End Links)
- Replace worn U-joints
- Replace worn Wheel bearings
- Squeaky steeering wheel? Lube Steering Column Boot (from inside)
Optional service items before they die on you
- Alternator
- CPS/CKP sensor
- Replace TPS (throttle position sensor)
- Replace IAC/ICV (idle control valve/motor)
- Starter
- Fuel pump and filter
- Temperature sending units (2)
Optional upgrades
- Headlight harness upgrade
- New Headlights
- Transmission cooler
- Replace center console
- Replace carpet
- Replace seats
11-24-2013, 07:13 PM
#22
Member
Join Date: Aug 2012
Location: Atlanta Georgia
Posts: 171
Likes: 0
Received 2 Likes
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2 Posts
Year: 1997
Model: Cherokee
Engine: 4.0L
Well maybe I can...cough cough help here.
Mine looked like that, maybe worse, just over a year ago. I used a shop vac with a turkey baster tube as a super nozzle to scrap and vac under the valve cover. Did TONS of other things chasing a mis-fire. Finally decided. It HAD to be something with the head.
(was burnt valve ).
My tear down found all you see under the valve cover in the lower end. I basically did what is being suggested. Drop pan, was leaking anyway, new oil pump. New pickup. Cleaned everything I could. SHOULD have possibly replaced the bearings but I didn't.
Yeah, it doesn't SOUND great when first cranked. Yeah, my oil pressure is 20-50 running good filter and 10W-40 oil. How does it run? Pretty good. 258K Miles and with my brand new 245/75/16 old style MTRs and 3" lift I get 15mpg and it will spin them if I stomp on it.
I plan to just maintain, pray and run it til it dies, then completely rebuild.
Buddy at work has 368K on his. The 4.0L seems to be able to take alot of abuse.
Mine looked like that, maybe worse, just over a year ago. I used a shop vac with a turkey baster tube as a super nozzle to scrap and vac under the valve cover. Did TONS of other things chasing a mis-fire. Finally decided. It HAD to be something with the head.
(was burnt valve ).
My tear down found all you see under the valve cover in the lower end. I basically did what is being suggested. Drop pan, was leaking anyway, new oil pump. New pickup. Cleaned everything I could. SHOULD have possibly replaced the bearings but I didn't.
Yeah, it doesn't SOUND great when first cranked. Yeah, my oil pressure is 20-50 running good filter and 10W-40 oil. How does it run? Pretty good. 258K Miles and with my brand new 245/75/16 old style MTRs and 3" lift I get 15mpg and it will spin them if I stomp on it.
I plan to just maintain, pray and run it til it dies, then completely rebuild.
Buddy at work has 368K on his. The 4.0L seems to be able to take alot of abuse.
11-24-2013, 10:07 PM
#27
::CF Moderator::
Join Date: Aug 2011
Location: Prescott, Az
Posts: 43,971
Received 1,559 Likes
on
1,263 Posts
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
