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Discussion Starter · #1 ·
My 87 YJ i6 just started putting puffs of thick white smoke from around the base of the carb. She is also puddling a decent amount of oil directly under that same spot. General Ideas welcome, how bad is this?
 

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Lots of blow by from valve seals, and possibly valve seats. The pistons are pushing the oil and exhaust back up into the intake. Also means that now you have a vacuum leak if you see it puffing out by the carb gasket.
 

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Discussion Starter · #3 ·
Lots of blow by from valve seals, and possibly valve seats. The pistons are pushing the oil and exhaust back up into the intake. Also means that now you have a vacuum leak if you see it puffing out by the carb gasket.
So how much should I expect to cry at repair bill? $0-300 I am sad. 300-$600 I cry, More than $600 I sob.
 

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Depends if you need a valve job or not.

If you need valve seats, well.... You'll have to have the seats put in, valves grinded, new valve guides, and seals as well.

Anywhere between 250-$1500 I would guess.
 

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Discussion Starter · #5 ·
Depends if you need a valve job or not.

If you need valve seats, well.... You'll have to have the seats put in, valves grinded, new valve guides, and seals as well.

Anywhere between 250-$1500 I would guess.
Thank you, it helps to lessen the blow knowing this before I find out the actual amount..
 

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I hope its cheap for you. Take it to a Chrysler dealership, pay the diag fee and ask for a leak down test. They will be able to determine what's leaking most likely.
 

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you need to take your jeep to a trusted mechanic for diagnosis. what you are discribing could be as simple as a few bad gaskets. the trouble with internet advice is we can't see what your seeing.
 

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Discussion Starter · #8 ·
you need to take your jeep to a trusted mechanic for diagnosis. what you are discribing could be as simple as a few bad gaskets. the trouble with internet advice is we can't see what your seeing.
Thanks, I wish I could attach the one minute video I have of it. But alas I have found a mechanic who comes well recommended and will be making arrangements tomorrow.
 

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That to me looks like steam not smoke, probably from a leaking head gasket between the head and the block.Coolant hitting the exhaust manifold.Looks like you will be pulling the head after all. You might as well do the valves and surface the head too.
 

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your engine has been modified with an aftermarket carb and possibly a 4.0 head swap. is there anyway you can find out exactly what has been done? if it does have the head swap there are holes that get plugged by welding or with epoxy. one of them may be leaking.
no need to take it to the dealer, your engine is no longer stock.
 

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also, if it is a coolant leak it should have a sweet smell to it.
 
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