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Author Topic: White smoke on startup  (Read 4515 times)

Jason Worman

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White smoke on startup
« on: October 05, 2018, 09:43:35 PM »
Just curious, on starting the engine up I get a big puff of white smoke and then no smoke at all. I have the Cat 3116 engine S/N 7SF12160. When I called local Cat Dealer about some parts the S/N did not show up. Thanks
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Mike Shumack

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Re: White smoke on startup
« Reply #1 on: October 05, 2018, 10:10:41 PM »
Could just be condensation in the exhaust pipe. Once the exhaust heats up the moisture evaporates and the smoke is no longer visible. That's pretty common on cool mornings.

Or could be some tiny amount of coolant leaking into cylinder head while engine is shut off. Do you see any drop in coolant level?
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Jason Worman

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Re: White smoke on startup
« Reply #2 on: October 06, 2018, 12:29:09 AM »
No drops in the coolant level, it runs pretty darn good for being 27 years old
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Dave Atherton

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Re: White smoke on startup
« Reply #3 on: October 06, 2018, 03:39:54 AM »
Jason, the white smoke with Cat 3116 is normal and nothing to worry about. The white smoke
should clear out around 5 minute. Dave Atherton Retired Cat Mechanic
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Doug Allman

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Re: White smoke on startup
« Reply #4 on: October 06, 2018, 10:35:35 AM »
Jason, We had a 1991 Contessa with the 3116 CAT and used to get black smoke as we accelerated. Had CAT reset fuel lower and then back up to normal settings and it did not help with smoke. Dave is correct, just drive on.
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