Help! engine concerns

[chiefs81vette]

All, I took a drive and decided it was time to let loose and see what she has, the ride was great and no problems at all, however when I shut the engine I heard a huge "klunk" like the block was going to fall, and then I noticed some antifreeze on top of the block itself....Any help and guidance would be appreciated

 

[Bob Chadwick]

Sounds like the radiator cap may have let loose and sprayed some coolant on the engine. Are the hoses in place for the overflow system?

 

[chiefs81vette]

checked the hoses nothing out of the ordinary, Im not sure what caused that huge clunk sound after I turned off the engine

 

[Bob Chadwick]

Someone else will chime in.

 

[bill81vette]

FWIW....Check you motor mounts to see if one of them broke...
the only clunk would be from the engine falling back into place...

 

[chiefs81vette]

okay I will look at that today, thanks to all for helping me out

 

[Vette79]

Where is the coolant? Can you post a PIC?

 

[chiefs81vette]

here is the pic, the puddle of antifreeze was located just under the air filter right on the block itself

 

[chiefs81vette]

I think it may be a my water pump going out but not sure

 

[rgtrough]

Hey Chief, It is not uncommon for Chevy engines to seep coolant around the thermostat housing gasket and puddle in low spots on the intake manifold.
Bud

 

[Vette79]

You have a leak none-the-less that needs to be addressed. I would start with the thermostat housing gasket. First, make sure the hose to the thermostat housing is not the problem and then go from there.

 

[chiefs81vette]

Ill look at that... thanks for the help

 

[LVMYVT76]

Check the thermostat housing to make sure it is flat and not warped. Put a flat edge against where the gasket area is to see if it is flat.