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Old 11-06-2011, 05:42 PM   #1
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My YJ wishes it as diesel!?!?!!?

So today my YJ started acting strange, when i park and turn the ignition off its cuts off then stutters as if trying to run then shuts off (same as a diesel when they dont shut off and you use the manual fuel cutoff for those who know diesels). Any ideas what it could be?

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Old 11-06-2011, 07:18 PM   #2
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Severe carbon build up. Run some super unleaded and Seafoam her. Change plugs and oil after you seafoam her. Run the rpms up one in a while to clean her out and it wont happen.

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Old 11-28-2011, 05:16 PM   #3
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I have this same problem with my 1990. Can i just get the seafoam at any autoparts store?? and how long will it take to run through the system before i should change my spark plugs and change the oil??
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Old 11-28-2011, 07:07 PM   #4
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Originally Posted by YJoelKellogg View Post
I have this same problem with my 1990. Can i just get the seafoam at any autoparts store?? and how long will it take to run through the system before i should change my spark plugs and change the oil??

Most Autoparts stores have it. I know Advance has it for sure. It usually happens pretty quick. I usually put 1/4 of the can in the oil and the rest in a full tank of gas.
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Old 11-28-2011, 09:17 PM   #5
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I trickle it into the brake booster hose. It will smoke like crazy! Vary the throttle by hand to keep it running. Should stop smoking in a hour at most of normal driving. Change oil and plugs after it stops smoking as some of the crap will wash into oil and filter. My neighbors love when I do it. Huge smoke show. Do it an night if ya have to.
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Old 11-28-2011, 09:28 PM   #6
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Originally Posted by Jeep716
I trickle it into the brake booster hose. It will smoke like crazy! Vary the throttle by hand to keep it running. Should stop smoking in a hour at most of normal driving. Change oil and plugs after it stops smoking as some of the crap will wash into oil and filter. My neighbors love when I do it. Huge smoke show. Do it an night if ya have to.
No need to change the oil, its a petroleum product, not chemical. But everything else yes! Seafoam should help a good amount.
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Old 12-10-2011, 10:38 PM   #7
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If you wan't to clean almost all the carbon out, warm the motor then start pouring the seafoam in Tb {Carb} hold motor at fast idle for half a can, then pour it in fast to drown the motor out. Let it set over night, the next morning start it up and rev it up till the smoke stops. the carbon will be gone. Oh aim the tail pipe away form any thing you do not want BLACK!

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