Quote:
Originally Posted by Matt L
Are you sure that you're supposed to put oil in the weep hole? This is the first time that I've ever heard of this one.
That hole is there to let coolant out if the seal fails. Were it not present, there would be no weep, and thus no coolant loss at all until the seal on the outer bearing failed. Then you're stuck where you are. As it is, the coolant out of the weep hole gives you ample warning that the pump seal is on its way out.
I imagine that oil is not good for the pump seal. If it's noisy, replace the thing. Yes, water pumps are self-lubricating.
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This conversation shows the diversity oif the engines we service.
My 1937 Citroen Traction engine has both a zerk-type fitting for lube, and a small open cavity as a weep hole.
I have seen other cars that lubed the water pumps this way, but I don't know when that stopped. The DS!( Cit engine has a large needle bearing assembly that is lubed, and it is surrounded on both sides by rubber seals, on of which is partially lubed by the grease you add.
Someone needs to check out the lubde diagrams for the early cars and see what we can find out.