SL/SLC-Class (R107) 1971-1989 : 250SL, 280SL, 450 SL, 380 SLC, 450 SL, 380 SL, 560 SL

SL/R107: 1985 380sl Smokes during Start up 4 plugs wet 4 dry

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Old Sep 6, 2013 | 08:29 AM
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ctuck1's Avatar
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From: Durham, NC
2006 Cadillac DTS, 1987 JAG XJ6, 1982 380sl, 1985 380sl
Unhappy 1985 380sl Smokes during Start up 4 plugs wet 4 dry

The car had not been run for 12 years. My car starts super fast. As it warms up, smoke comes from exhaust under the hood on passenger side and out the tailpipe. As the car warms up the smoke get thicker and floats through the air.The smoke coming from under the hood tapers off. When I take off, the smoke (blue/white) creates this dense fog of smoke. After a few blocks and acceleration, it clears up. The car runs smooths throughout all of this. I replaced the fuel pump, filter, tank strainer, drained and refilled the tank, removed and flushed the fuel distributor, replaced spark plugs, distributor cap and rotor button, and ran Chevron through vacuum line and put a bottle of Chevron in the gas tank. (I have driven probably 20 miles since running the Chevron through the vacuum). I also removed the injectors from the passenger side and soaked the and I blew compressed air through them. The driver side spark plugs were wet when I removed them and the plugs from the passenger side were dry. The passenger side plugs were black, but dry. What is going on?
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Old Dec 20, 2013 | 01:46 AM
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artificer's Avatar
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From: Gold Coast AU
1981 W107 500SL
I had the same type issue & it turned out to be valve stem seals.
Pretty easy fix took about 4 hours after I made this special tool....
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Old Dec 20, 2013 | 08:18 AM
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ctuck1's Avatar
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2006 Cadillac DTS, 1987 JAG XJ6, 1982 380sl, 1985 380sl
Thanks John. How long did it take you to make that tool?
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Old Dec 20, 2013 | 04:48 PM
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From: Gold Coast AU
1981 W107 500SL
About 2 hours.
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