okay here is the problem and i am begging for help i have a 2001 v8 5.9 dodge ram 1500 4x4 i am having a coolant leak from the bottom of my water pump and its running down the harmonic balancer it only leaks when u turn the truck off i changed the water pump and it still leaks idk what the problem is and idk why it keeps leaking what should i check next it seems to be leaking on the bottom left side from where a bolt goes in but i can not tell i really need help cuz its my fiance truck and i just bought it and threw a lift tires paint job and all that bs now she takes it out with her friends and this happens as ive stated it ONLY LEAKS WHEN U TURN THE TRUCK OFF what could the problem be please help

 

FWIW, i replaced my water pump in oct 2011, and it was a brand new GMB pump from advance, and it was faulty from the factory. leaked like a bastard once truck was shut off.

replaced WP again, and never looked back.

 

If it's coming from the weep hole the pump is NG

 

If it's coming from a bolt.... pull the bolt, put some RTV on it, and put it back in.

 

you might want to check to see if its not your timing cover, i have a small leak there i just havent gotten around to fixing yet, it only leaks right when the truck is shut off also

 

+2 on what heyyou said. I had a bolt leaking coolant after I swapped my wp and I just pulled it out and put some rtv on it. Problem solved.

 

How many miles on truck? May want to consider replacing pump.

 

Read The Ops FIRST post just replaced the pump still leaks

 

Did you get the mating surface on the block nice and clean before installing the new pump?

 

My bet is the oring on the water pump inlet. Small diameter black tube coming in the top at about the 1 oclock position.

Just enough comes out to run down and can appear that the timing cover gasket or other is the source. Sometimes so faint you have to get a paper towel there to catch it.

Shown here





and the look on the bottom from that bugger




This would be an easy one to rule out.