e36 broke water pump.. bits still missing :(

[joe_90]

My water pump broke, I have got it out, but some bits of the brittle impeller are still missing. (Even after fishing out all the bits I can see)

What the best way to deal with this issue.. I was thinking of attacking a hosepipe to the engine (coolant system) and flushing thru to see if anybits come thru.

Best case they all come out.. or when i fit the metal one it smashes the brittle plastic to bits.

Worst case these bits of plastic block something..

Any other ideas?

[oOTomOo]

Hose pipe flush it, don't run it with bits o plastic in the system.

[joe_90]

i don't want too.. its how much the plastic has brokendown.. I think a good old flush thru is in order.

[8Tech]

Small parts of plastic impellor will not do any harm and if they were small enough to drop beyond recovery from the waterpump position then they will not cause a problem. Flushing is unlikely to shift them.