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Unread 07-22-2014, 09:06 PM   #16
AllTime4x4
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2004 WJ 
 
Join Date: Jul 2014
Location: Charlotte, NC
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Quote:
Originally Posted by JPugh View Post
White smoke? That's not oil, its probably water.
When I said white, I guess I should have said blueish/grey white. It's definitely not water. I pressure checked the cooling system myself and the coolant level's the same daily - almost positive it's not a head gasket. My last vehicle was a Land Rover, so unfortunately I have quite a lot of experience with head gaskets.

I did some research and based on the (small) amount of smoke, and timing of it, I believe it to be valve stem seals. Here's one quote I'm referring to from another forum:
"One characteristic of bad valve stem seals/guides, is when you park it hot, then start it after some time and it puffs blue smoke. Oil ran down the valve and ended up in the cylinder. "

That's almost exactly what happened the other day. Now - I did just finish replacing the spark plugs. Two things - first, they had almost NO ELECTRODE left. None. They were flat on the edges, which told me that if they weren't oem, they were damn close. Second, didn't find any oil residue on any of the plugs. I'll post a photo of all of them, maybe someone can identify something I missed.

I ended up going with M1 HM 5w-30. I'm hoping that the seal conditioner will work to my advantage with the slight oil burning. I'm going to start checking the oil weekly to identify how much it's burning if any.

Thanks for all the advice and opinions!


Last edited by AllTime4x4; 07-22-2014 at 11:17 PM..
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Unread 07-22-2014, 10:10 PM   #17
JPugh
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Join Date: Oct 2011
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Well, maybe that is your problem then, but just so you know, and I think someone said it already, the thing that makes high-mileage oil high-mileage oil is that they put seal sweller in the additive package. Personally, I don't feel like valve stem seals are worth going to HM oil. I'm just now seeing that you said you had some oil around the bellhousing, so in that case, maybe it's necessary. If you haven't already, clean that up really well and see how it looks at your next oil change. GL and enjoy your new Jeep. This only reminds me of how profusely my tranny pan is leaking oil, I need to get on that filter/gasket change.
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Unread 07-22-2014, 10:28 PM   #18
AllTime4x4
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Here's a photo of the sparkplugs I pulled out. I've never seen sparkplugs this bad before. Yet from what I can tell no oil on them.

Believe it or not, truck ran very well with these. Smooth idle and acceleration. I'm sure it's even better now but I really can't tell much of a difference. Not like when I replaced some silverado plugs at 45k, it seemed like it had 50 more hp.
lowres.jpg


Last edited by AllTime4x4; 07-22-2014 at 11:19 PM..
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Unread 07-22-2014, 10:50 PM   #19
JPugh
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Holy balls those are bad.
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Unread 07-23-2014, 03:03 AM   #20
86cj74.2L
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Got to love coil in plug. It will fire anything.

My 04 4.7 looked bad too when I first bought and changed plugs. But I only had a 1/8 air gap.

I doubt the 4.0 with its wasted spark system would have been happy with that much of a air gap.
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