What on earth is this part thats leaking coolant?

[nando]

oh man, and on a weekend too. I rarely post on weekends!

[Danny]

yeah... he has 25 years working for BMW, and all kinds of placks on the wall, i figured he would have done it proper...

There is your problem.

[mikeedler]

judging from what I see on the pics it looks to me like it is the waterpump itself that failed and not the gasket. looks like the coolant is coming out where the bearing is from the small "leak-hole".-- see hoe the coolant has a stream coking from the center then down.

[88e30is]

There is your problem.

Why is that a problem?

[ethirtydavid]

^ nice ix

..take that shit back and get it done right

[deansbimmer]

Judging by the fact that the coolant is running down the pump from the front tells me that its the pump front bearing seal itself, not the gasket. Front seals can wear sooner and leak if the belts are way too tight.

[xLibelle]

actually, could be the coolant hose leaking. this was addressed last week in another thread here.

[Flash]

He replaced timing and all other belts... i told him to replace the water pump, he said he looked at it, and no broken plastic, and ran well, so he didn't replace it.

Plastic water pump eh?

Why not do it yourself? It takes like an hour TOPS to do.
Get a new waterpump for 45 bucks, use permatex waterpump and gasket maker after you cleand the surface on the block, bolt up and let it cure for 24 hours (you dont have to but it will never leak if you let it cure) and you are set.
Its pretty darn obvious nothing about the pump was touched, look how dirty is it and the caked rim of dirt and oil on the pump at the bottom.

Even with a new pump (which this one wasnt) it can still leak if the gasket was compromised, when i was a n00b a few years back, it leaked because i didnt clean the surface 100%, and use the wrong permatex brand goop Since then i never had a pump leak since i learned how to install one correctly,

[Ben Carufel]

Plastic water pump eh?

Plastic impeller is probably what he meant.

BTW, "Permatex" goop isn't necessary for a water pump replacement. Clean the mating surfaces well and use the paper gasket supplied with the new pump.

If you want to make life easier, use some spray tack to hold the gasket in place while you mount the new pump.

[Ben Carufel]

Why is that a problem?

Because it's spelled "plaques".

He has plaques on his wall. Not placks.