The old 190e, after driving for some time, when parked on a slight incline (nose higher) does a noticeable "psssst" as if the radiator cap just released.

Is this normal?

Haasman

__________________
'03 E320 Wagon-Sold
'95 E320 Wagon-Went to Ex
'93 190E 2.6-Wrecked
'91 300E-Went to Ex
'65 911 Coupe (#302580)

Haasman:

In an old thread(that I can never find), M.B.Doc commented about a technique used to bleed air from the cooling system on certain 103 motors.

The strategy was to elevate the front-end of the car and run the engine with the reservoir pressure cap removed. This helped to "burp" the system.

I wonder if perhaps you:

a. Have air in the cooling system

b. Have a pressure cap that's not holding 100%

My 2 cents.

__________________
Mike Murrell
1991 300-SEL - Model 126
M103 - SOHC
"Fräulein"

Thanks Mike. I will try making sure the system is bled properly and also get the cap pressure tested.

Haasman

__________________
'03 E320 Wagon-Sold
'95 E320 Wagon-Went to Ex
'93 190E 2.6-Wrecked
'91 300E-Went to Ex
'65 911 Coupe (#302580)