Hello again everyone,

I have been busy with school and work.

Anyways, I replaced the waterpump, upper and lower radiator hoses, valve cover gasket and all that stuff related. Refilled with Zerex G-05 50/50 mix.

However, I still have the leak, I am not upset about the work I already did, its expensive insurance, plus, the impeller in the water pump did not look healthy at all and the shaft did move a bit when I applied pressure on it.

The leak is very weird, I drive my car every day, some days it leaks, some days it does not leak, I just dont get it, it does not matter what temp my coolant gets to.

It does not appear to leak when I am driving, only when I turn off the car.

Though it never leaks if the I just move the car around the driveway. (Engine never reaches operating temp) (Maybe hits 60C)

I isolated the leak to the back of the block, I found some white speckled water spots on the oil filter and rear heatshield. (Something is spraying!)

Tonight when I get back from school, I will take my trusty Canon SD300 and sneak it under the intake manifold to attempt find the leak.

DOES ANYONE HAVE A DIAGRAM OF HEATER HOSES NEAR THE INTAKE MANIFOLD OF AN M103???

__________________
2006 BMW M5 "Heidi" @ 109,000 miles
2005 MBZ C55 AMG "Lorelai" @ 165,000 miles
1991 MBZ 300E "Benzachino II" @ 165,000 miles
1990 MBZ 500SL "Shoshanna" @ 118,000 miles

(On the hunt for a good used M103 engine as of 6/10/23, PM me if you have one to sell!)