I just installed a new Bosch WP, and after a test drive I see some coolant coming from the weep hole. I freaked at first, but now I see in the paperwork that came with the pump, it says this is normal at first, and it "should stop after the seal has been allowed to lap in".

Did anyone else experience this? Is it just the Bosh pumps, or do all pumps do this?

 

If the instructions say it's ok, then let it go. If it's still leaking regularly after a week or so of regular driving, I'd take it back for another.

- Brent

 

Yes its normal. If it's dripping you might have a problem.

 

Seepage is good, weepage is bad