Continuous water pump seal blowing

[pete.chivers18]

Hey all im upto water pump nember 5 now the bearimg them selfs are fine just the seals keep leaking ive flushed the radiator and block also using nulon pre mix coolant this time ive changed the idler pulleys tensioner and pulley fan belt thermostat and radiator cap and im still stumped as to why they keep blowing every 10 thousand to 20 thousand kms any help would be awsome cheers

[pete.chivers18]

Also its a 2007 d4d 265000 kms

[hippo]

is it a after maket water pump . is so maybe doesn't sit flat. check it with a steel ruler

[Hiluxsr51991]

@pete.chivers18 What colour coolant you running? Heard from and old fella who used to work for toyota, that the red factory coolant renders the water pump tell tail to go brittle quicker than the green stuff. I myself haven't tried it though but worth a shot.

I'm running red coolant and aftermarket water pump, it's going fine also c/o timing belt at the same time

[Jock.]

Genuine pump???