Thread: DIIA Td5 coolant leak

I’d suggest it’s more likely the pump shaft seal leaking from the bleed hole rather than an o ring fail.
In any case if you change the pump use genuine.
I have had a few TD5 in the family, 3 tuned and a couple std, and only one had oversize exhaust stud fitted due to the previous owner ignoring mechanical sympathy. That was a std tune also.
So for me I wouldn’t change what isn’t a problem.
The plug is behind the manifold and can be tight to remove.
You don’t need to change the plug itself only the sealant and only if it’s loose/ leaking.
There is pics from many moons ago which may have been lost in “the great crash” but not a difficult job.

Suggestion only.
Pull the oil cooler and do the o rings while all that side is apart and change the stubby tapered ( secret) hose behind the turbo while you’re there.
Maybe the best extra hour and coffee money you’ll ever spend.

Originally Posted by strangy

Suggestion only.
Pull the oil cooler and do the o rings while all that side is apart and change the stubby tapered ( secret) hose behind the turbo while you’re there.
Maybe the best extra hour and coffee money you’ll ever spend.

also a suggestion
Plug that hose, and its counterpart on the header tank, remove the EGR cooler.

Ditto on the oil cooler, i thought i was leaking from the back of the pump but was the oil cooler gasket, can be hard to see where it is leaking as it runs in behind the brackets and out the bottom.

Thanks for the helpful suggestions. Large order for cooling system pump, hoses, gaskets etc. in preparation...