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Old 07-11-2013, 10:52 PM   #1
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Puffs of white smoke under carb

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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Old 07-11-2013, 11:21 PM   #2
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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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Old 07-11-2013, 11:37 PM   #3
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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.
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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Old 07-13-2013, 12:26 AM   #4
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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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Old 07-13-2013, 02:21 AM   #5
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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.
Thank you, it helps to lessen the blow knowing this before I find out the actual amount..
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Old 07-13-2013, 08:29 AM   #6
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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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Old 07-13-2013, 12:14 PM   #7
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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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Old 07-14-2013, 02:19 AM   #8
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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.
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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Old 07-14-2013, 06:57 PM   #9
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I recommend taking it to JEEP.

Also, you can upload your video to Youtube, and link it here.
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Old 07-15-2013, 01:24 AM   #10
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I recommend taking it to JEEP.

Also, you can upload your video to Youtube, and link it here.
She is an 87, you think I really need to take her to a Jeep dealer? Oh and here is a link to the video of her smoking.

http://youtu.be/682cswg1FvM
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Old 07-15-2013, 04:49 AM   #11
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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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Old 07-15-2013, 05:49 AM   #12
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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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Old 07-15-2013, 06:59 AM   #13
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also, if it is a coolant leak it should have a sweet smell to it.
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Old 07-15-2013, 01:39 PM   #14
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Thank you all for the much needed ideas and info, it is much appreciated.
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Old 07-15-2013, 02:31 PM   #15
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also, if it is a coolant leak it should have a sweet smell to it.
Only if he is running antifreeze not straight water.
The clue is the steam dissapears very quickly after it rises smoke will linger.

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