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Bleeder valve location on 1987 mercedes 300e

Tiny
LIZ STAHL
  • MEMBER
  • 1987 MERCEDES BENZ 300E
  • 47,000 MILES
Having overheating problems. Replaced radiator, fuel pump, sparkplugs. Yesterday put in a treatment for a leak in the head gasket. Still overheating. Think we may have air in the lines. Need the location of the bleeder valve or other suggestions. Car did not come with owner's manual
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Sunday, January 1st, 2012 AT 9:49 PM

3 Replies

Tiny
RIVERMIKERAT
  • MECHANIC
  • 6,110 POSTS
Our reference has no instructions specific for bleeding. Run the engine on an upward slant with the radiator cap off. This will cause any air bubbles to move to the radiator and out.
With then engine at operating temp, can you see coolant moving in the radiator? IF not, check the thermostat and water pump.
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Sunday, January 1st, 2012 AT 9:58 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
How did you know the treatment works? Best just block and pressure test it-start here
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Sunday, January 1st, 2012 AT 10:12 PM
Tiny
RIVERMIKERAT
  • MECHANIC
  • 6,110 POSTS
Yep. I agree.
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Sunday, January 1st, 2012 AT 10:28 PM

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