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  #1  
Old March 2nd, 2020, 09:42 AM
linuswilliams linuswilliams is offline
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Default Two Barrel Carb - Could it cause white smoke?

Hi Guys,
Stock 230 Engine Question:
Like some of you, I replaced my single carb with a two-barrel carb. I did this during the restoration and never drove the truck with the single carb. I've also replaced spark plugs and wires with period-correct versions from Memphis and have great compression. The engine is running great but I have constant white smoke. More than just fogging. It is now occurring to me that upgrading my carb could be the cause. In other words, have I over carbureted the engine and am now dealing with some white exhaust smoke?
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Old March 2nd, 2020, 09:49 AM
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Does the smoke smell sweet? Or does it smell like gas? If it's white my first thought is coolant is leaking somewhere into the engine.
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Old March 2nd, 2020, 01:55 PM
linuswilliams linuswilliams is offline
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Smells like gas. Drove it around during lunch. Pulled it back in the shop and it was barely puffing white smoke.
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Old March 3rd, 2020, 05:37 AM
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Normally,

White smoke is coolant

Black smoke is too much fuel

Blue smoke is oil

Your truck has gone years without running. Who knows why it was parked in the first place and what nest have been built in your exhaust. If the oil looks like oil. The coolant looks like coolant and isn't pressurized with a cold engine. Then I suggest drive it and see if it keeps getting better.
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Old March 3rd, 2020, 05:42 AM
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Thanks. I appreciate the input.
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Old March 3rd, 2020, 10:45 PM
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My truck has an original 230 engine and it sat for many years before I got it. It was stiff to turn over by hand, but not "locked up". When it started for the first time, it did a lot of smoking. But after running for a few hours off and on over the next week, the smoking stopped and it became much easier to rotate the crankshaft by hand (via the fan blade).

I think the description of the color of smoke above is accurate.
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Old March 4th, 2020, 04:27 AM
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Concur with the above...I would run it for now and see if the coolant level changes...white smoke is usually boiling the coolant in the chamber so you see steam...

Did the 2 barrel swap myself, if the mixture is set right, no smoke on mine...

Since there is coolant in the intake, it could be coming from an internal manifold crack...though since you never drove it before...and maybe it has been sitting a long time, could be anywhere really...
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Old March 4th, 2020, 09:45 AM
linuswilliams linuswilliams is offline
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Thank you. Good input.
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Old March 5th, 2020, 01:25 PM
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If coolant is getting into the oil, the oil will look brown like a rootbeer float. Also, watch the radiator when it is running. You should not see bubbles. But frothy oil is a sign of a head gasket problem or worse yet, cracked head of cylinder.
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