Author Topic: 280 sl 1969 a lot of Gasoline / Petrol in Engine  (Read 3973 times)

fabricio

  • Guest
280 sl 1969 a lot of Gasoline / Petrol in Engine
« on: June 22, 2011, 03:46:37 »
 i read that the cold start valve causes rich mixture with clogged spark plugs, black somoke and petrol smell  in exaust fumes, and uneven iddling with very poor acceleration. All this is happening  to my car,  but it can cause the big amount of petrol in engine  oil?
What other  problems  causes big amounts of petrol in engine oil?.
  
« Last Edit: June 22, 2011, 09:27:06 by 280SL71 »

ja17

  • Full Member
  • Platinum
  • ******
  • USA, OH, Blacklick
  • Posts: 7410
Re: 280 sl 1969 a lot of GASOLINE/PETROL IN ENGINE OIL
« Reply #1 on: June 22, 2011, 06:02:58 »
Yes this can be caused by a stuck WRD. or a leaky CSV or possibly a stuck rack in the injection pump.

I would check the WRD first.
Joe Alexander
Blacklick, Ohio
1969 Dark Olive 280SL
2002 ML55 AMG (tow vehicle)
2002 SLK32 AMG (350 hp)
1982 300TD Wagon turbo 4spd.
1963 404 Mercedes Unimog (Swedish Army)
1989 flu419 Mercedes Unimog (US Army)
1998 E430
1974 450SLC Rally
1965 220SE Finback

Ulf

  • Associate Member
  • Gold
  • *****
  • Denmark, Fredericksberg, Rungsted Kyst
  • Posts: 838
Re: 280 sl 1969 a lot of GASOLINE/PETROL IN ENGINE OIL
« Reply #2 on: June 22, 2011, 06:31:21 »
Had the same issue to a lesser degree, but after skipping the short trips and only driving longer distances, the problem has cured itself. My engine oil used to smell a lot of gasoline, but when I changed it this Sunday, it didn't....
1965 230 SL in silver (DB180)
1982 Land Rover Series III SWB
2008 Jaguar XF 3.0
2005 Mini Cooper

Wolfmann

  • Guest
Re: 280 sl 1969 a lot of GASOLINE/PETROL IN ENGINE OIL
« Reply #3 on: June 22, 2011, 08:31:21 »
What does WRD stand for please ?


Ulf

  • Associate Member
  • Gold
  • *****
  • Denmark, Fredericksberg, Rungsted Kyst
  • Posts: 838
Re: 280 sl 1969 a lot of GASOLINE/PETROL IN ENGINE OIL
« Reply #4 on: June 22, 2011, 08:57:05 »
Warm Running Device - a kind of automatic choker that makes sure a cold engine will get plenty of fuel and should switch off by itself. If stuck, the mixture will remain too rich and thus foul plugs, cause excessive fumes, poor running and a distinct gasoline smell in the engine oil (this can also be due to a bad injector, though).

:-)

Ulf
1965 230 SL in silver (DB180)
1982 Land Rover Series III SWB
2008 Jaguar XF 3.0
2005 Mini Cooper

Ulf

  • Associate Member
  • Gold
  • *****
  • Denmark, Fredericksberg, Rungsted Kyst
  • Posts: 838
Re: 280 sl 1969 a lot of GASOLINE/PETROL IN ENGINE OIL
« Reply #5 on: June 22, 2011, 09:02:07 »
Sorry - just realized that I'm confusing the WRD with the Cold Start Valve in terms of describing its' function, but the abbreviation is correct - will not try to be clever again while being slightly stressed at work...
1965 230 SL in silver (DB180)
1982 Land Rover Series III SWB
2008 Jaguar XF 3.0
2005 Mini Cooper

ja17

  • Full Member
  • Platinum
  • ******
  • USA, OH, Blacklick
  • Posts: 7410
Re: 280 sl 1969 a lot of Gasoline / Petrol in Engine
« Reply #6 on: June 22, 2011, 12:27:16 »
Hello,

Yes Ulf is correct. The WRD (Warm Running Device) is a kind of choke or a warm up regulator. It controls fuel mixture while the engine is warming up. It richens the fuel mixture and provides extra air for the engine while it is warming up. This is one of the items which get stuck when a car is stored for extended periods. It has a small round air filter on it and is located at the rear/top of the injection pump and has two coolant lines and one air line going to it.
Joe Alexander
Blacklick, Ohio
1969 Dark Olive 280SL
2002 ML55 AMG (tow vehicle)
2002 SLK32 AMG (350 hp)
1982 300TD Wagon turbo 4spd.
1963 404 Mercedes Unimog (Swedish Army)
1989 flu419 Mercedes Unimog (US Army)
1998 E430
1974 450SLC Rally
1965 220SE Finback