ey2001

i have a weird coolant leak... i replaced one of the whole hose component and it was fine... for few months and now i have another issue... anyone know what it could be? i tried pulling it off and putting it back on.. there are no rips on the hose nor cracks on the plug area.. and one of them are new...this on a 06 525i and the hoses are below the intake.

AchtungE60

in the second photo it looks as it the leak is coming from above. See coolant above the hoses? If you changed a hose did you clean the engine afterward? I mean you definitley have a coolant leak but the area is so filthy can't tell what's going on. Clean the area and check to see where leak is.

AUSaxon00

I have an '06 525xi and I replaced all of my coolant hoses at 75k miles as part of my standard maintenance. If one of your hoses went bad it's likely others might be bad as well. I would suggest replacing all your coolant hoses to be safe. It's cheap insurance against a major breakdown. When your cooling system goes out, you're out of commission.

AchtungE60

Oh i failed to read I thought he replaced them not just one. Replace all at one time.