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#1
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White smoke from bad fuel?
This is with my '85 500SL.
I regularly help out a candidate running for a local office by driving my convertible in parades. Two weekends ago I was sent out to far Eastern Kansas for a parade, and fueled up at a small mom & pop looking gas station on the way home. I have since noticed, though intermittently, white smoke, and my hand gets slightly damp when I hold it by the exhaust pipe. The smoke is odorless. My heads were redone in 2002 with about 15k traveled since and my coolant levels/oil levels are normal. I'm curious if this is symptomatic of watered down fuel, and my options. I have about half a tank remaining, and am wondering if I should go to the effort of draining the fuel, or just topping it off with fresh fuel. My main concern is that I first noticed it after some spirited driving, but I suspect a blown head gasket would be smoking constantly and consuming coolant, correct?
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1985 500SL Euro w/ AMG bits 130k 1984 300SD Turbodiesel 192k 1980 240D Stick China 188k 2001 CLK55 AMG 101k 2007 S600 Biturbo 149k Overheated Project, IT'S ALIVE!!! |
#2
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How long does it normally take for a T-stat to turn on?
I drove the car for 10 minutes then checked the coolant reservoir for bubbles. Nada.
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1985 500SL Euro w/ AMG bits 130k 1984 300SD Turbodiesel 192k 1980 240D Stick China 188k 2001 CLK55 AMG 101k 2007 S600 Biturbo 149k Overheated Project, IT'S ALIVE!!! |
#3
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Tyler, the thermostat will gradually open as the engine gets up to operating temperature. How quickly depends on the ambient temperature and how hard the engine is being driven ... say 5 minutes, plus or minus. Try adding some "dry gas" to the remaining gas in the tank and fill the tank. Hopefully it's not a minor head gasket failure.
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Fred Hoelzle |
#4
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You may have a small coolant leak somewhere internal o external
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1986 300SDL, 211K,Dealership serviced its whole life 1991 190E 2.6(120k) 1983 300D(300k) 1977 300D(211k) |
#5
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A bit of relief today.
Drove the SL about 50 miles making my errands for work. Topped off the fuel around lunch, and it hasn't smoked since. Exhaust still feels moist, but I believe there is some improvement. Still no change in coolant level, and no bubbles. Cross your fingers everyone... I will be watching this closely.
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1985 500SL Euro w/ AMG bits 130k 1984 300SD Turbodiesel 192k 1980 240D Stick China 188k 2001 CLK55 AMG 101k 2007 S600 Biturbo 149k Overheated Project, IT'S ALIVE!!! |
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