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Old December 1st, 2008, 10:46 AM
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phoenix phoenix is offline
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Default 230 smoke

I would just like a consensus on what would be wrong with my original 230. The motor has 17,000 miles on it. It starts instantly and runs great for the first 3 minutes with no smoke at all not even a puff of smoke on start-up. after 3 minutes it creates a huge smoke cloud behind the truck and looking at the motor, I see oil literally boiling out of three crack in the exhaust manifold. All the smoke is coming out of the exhaust pipe though. I would think its the rings but not 100% A guy may be interested in buying all the original parts I have pulled out, so I would like to tell him how much work he's looking at.
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Old December 1st, 2008, 11:40 AM
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Barrman Barrman is offline
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The standard rule is a puff of blue on start up and you have bad valve seals. A blue cloud while running at idle is rings.

However, is yours a white or blue cloud? White means water is burning or rather flashing to steam and indicates a blown head gasket.
Remember if you didn't build it you can't call it yours.

6.2 powered M715, 5 M1009's, M416, 2 M101's, 2 M105's, 3 M35's, M1007 6.5 turbo Suburban project called Cowdog.
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Old December 2nd, 2008, 04:34 PM
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phoenix phoenix is offline
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I cant remember, its been 6 months since I pulled the motor out. If the head gasket was that bad wouldn't it smoke right away instead of after about three minutes though? I could do a compression test but I don't have all the tools to pull the plugs. besides all the smoke the motor ran great.
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Old December 2nd, 2008, 05:10 PM
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Change the oil and replace one quart with a quart of Lucas Oil. It helped the smoke on my last one a bit.
1967 M715 w/w #11812
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Old December 2nd, 2008, 06:26 PM
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Just a guess, It could be that once the engine warms up a little it expands and allowes the coolant to squirt past the compromised gastet???
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Old December 2nd, 2008, 06:58 PM
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brute4c brute4c is offline
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If they are stock military plugs and wires, you can get the wires off with a wrench and the plugs can be removed by gettin the deepest deep socket you can find in that size and using will reach.

You can cut the side out of a socket, like an O2 sensor socket is made, and use that on the plug wires as well.
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