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Old 03-17-2014, 07:57 AM   #1
bowjangles
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Default coolant causing smoke??

Trying to brainstorm 13-B with major smoke at start-up. Logic sez that it is either damaged oil seals or coolant seals.
Could coolant somehow be getting by the O- rings on intake manifold and into the exhaust system.? I recently replaced them and they look O.K.-Whadayathink guys?






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Old 03-17-2014, 11:50 AM   #2
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if it's coolant then it's the other O-ring. only fix is rebuild.
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Old 03-17-2014, 12:58 PM   #3
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First thing you need to do is figure out if it's oil smoke or coolant smoke. Easiest way to tell is smell & color of the smoke. If it's coolant burning, it will be white smoke and smell sweet. If it's oil burning, it will be bluish color, and have a nasty, acrid smell.
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Old 03-17-2014, 01:15 PM   #4
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extremely old fuel will also cause smoking issues, if the fuel isn't that old then see which level oil/coolant is dropping.
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Old 03-18-2014, 08:10 AM   #5
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Another O ring? And where would that be?
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Old 03-18-2014, 02:45 PM   #6
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Quote:
Originally Posted by bowjangles View Post
Another O ring? And where would that be?
The rotor housings and irons are sealed with O rings, when they (or the lands holding them) go you get coolant leaking into the area that the rotor occupies. Thus white smoke out the tail pipe.
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Old 03-19-2014, 07:54 AM   #7
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Thanks for the info
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Old 03-19-2014, 11:42 AM   #8
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found this image

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Old 03-19-2014, 12:46 PM   #9
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since this is in the old school section then that's not a likely candidate, unless a fuel injected engine was swapped in.
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Old 03-20-2014, 08:12 AM   #10
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So, u r saying that the pic of the busted O ring is from a fuel injected engine?? My 13-B is not fuel injected, but I see now where the o-ring is located and understand that a rebuild is in my fiuture.
Before I do the rebuild, I am going to plug up the coolant ports on the intake manifold and see if that stops the smoking What do u think?
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Old 03-20-2014, 02:36 PM   #11
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all engines prior to 1986 had the coolant seals in the rotor housings so the wall breaking was a bit less of a concern. they still could lose a coolant seal but again, less likely than the 1986-2002 engines.
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