Very simple question
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Seasoned Member
Joined: Dec 2011
Posts: 319
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From: Wenatchee, WA
Year: 1990
Model: Cherokee
Engine: 4.0L Renix
Thread Starter
Seasoned Member
Joined: Dec 2011
Posts: 319
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From: Wenatchee, WA
Year: 1990
Model: Cherokee
Engine: 4.0L Renix
I always put a blob of dilectric silicon grease in the plug boot before I clip them back on the plug. It waterproofs the seal and makes them easier to get off next time. I do the same to both ends of all of the plug and coil wires.
CF Veteran
Joined: Aug 2011
Posts: 10,489
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From: Nor-Cal Coast
Year: 90,84
Model: Cherokee
Engine: 4.0,2.5
On some engines it's really tough to get the plug to the hole and turn it. With a length of tubing that just fits the end of the plug, you can feed it into place and get a couple turns started. #1 on my 4.0 behind the AC compressor is the only remotely buried plug.
Last edited by DFlintstone; Jan 11, 2012 at 08:39 PM. Reason: tubing
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Joined: Jul 2011
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From: New Cumberland, PA
Year: 1995
Model: Cherokee
Engine: 4.0 I6
Thread Starter
Seasoned Member
Joined: Dec 2011
Posts: 319
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From: Wenatchee, WA
Year: 1990
Model: Cherokee
Engine: 4.0L Renix
OH yea that makes sense. I have a plug or two that is buried under my antifreeze line and two water lines I believe? How do I get in there?
CF Veteran
Joined: Aug 2011
Posts: 10,489
Likes: 24
From: Nor-Cal Coast
Year: 90,84
Model: Cherokee
Engine: 4.0,2.5
You'll manage. The hardest part will be some stupid little thing you would never expect. Like you will get the plugs out then find you are parked on an ant mound or something. Good luck!
(hoses Btw, Heater and radiator hoses w/coolant, (50/50 antifreeze and water))
(hoses Btw, Heater and radiator hoses w/coolant, (50/50 antifreeze and water))
Last edited by DFlintstone; Jan 12, 2012 at 12:58 AM.
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From: Seal Beach, CA
Year: 1996
Model: Cherokee
Engine: 4.0 HO Straight Six
Dielectric grease in boot, anti seize on threads. I saw that you mentioned "studdoring" when accelerating in another thread. Fuel filter could be suspect, good idea in changing that. Your spark plug wires could also contribute to that so if you're doing the plugs, I'd recommend do the wires too while you're at it
Thread Starter
Seasoned Member
Joined: Dec 2011
Posts: 319
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From: Wenatchee, WA
Year: 1990
Model: Cherokee
Engine: 4.0L Renix
Dielectric grease in boot, anti seize on threads. I saw that you mentioned "studdoring" when accelerating in another thread. Fuel filter could be suspect, good idea in changing that. Your spark plug wires could also contribute to that so if you're doing the plugs, I'd recommend do the wires too while you're at it
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