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Exhaust Smoke 57 Merc

waltzal

New member
"I have a 2000 Maxum with twin

"I have a 2000 Maxum with twin 5.7 Merc's, with only 125 hours. I just noticed exhaust smoke coming from the outdrives for the first time. Heavey when first starting up, but when the engines warms up, the smoke somewhat clears up. Any ideas what the problem is?"
 
If the temp gauges are ok I ca

If the temp gauges are ok I call this normal. I have twins and they have always steamed while running. Salt water?
 
"Is it smoke or steam? Big dif

"Is it smoke or steam? Big difference, and they do look alike.

Jeff

PS: My inboards "steam" on a cold day."
 
"Smoke would be fuel or oil. I

"Smoke would be fuel or oil. If its burning oil thats easy, you would smell it and it would have the trademark color. If its fat thats easy too, you would see it sooty in color and the smell is unmistakeable, either condition will leave a nasty film on the back of the boat. My bet is its steam and normal."
 
Thanks for all your comments a

Thanks for all your comments and advise. It was determined that it was normal for this to happen in cold weather.
 
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