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Old 07-24-2001, 02:20 PM
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Mike Murrell Mike Murrell is offline
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Join Date: Feb 2000
Posts: 2,357
Paul - nice picture of the head.

Taken another shot at this.

- Coolant cap - is it a 1.4 bar cap? This equates to 20
lbs. approx. They used to be 14-15lbs. Do you have a
1.4 bar cap? I know the cap is new, but....

- Air in the system remains a possibility.

- Is the radiator healthy?

- The T-stat has an air valve that must be positioned at
the highest point. Is it?

Check out the following posts. While they may not address issues in 104 motors, I think the basic ideas carry over to just about any car. Comments made by JeffSr, MBDoc; Benzmac
are especially worth considering.

300D Cooling system diagnosis

Cooling system "burping"

Mike Murrell
1991 300-SEL - Model 126
M103 - SOHC
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