coolant leak

[jon,123]

just replaced the engine in my 93 toyota pickup, 3.0 with an manual tranny, have a coolant leak some where probaly just a hose loose some where, but it only leaks after i have parked and its has been sittin for about a half hour, that kind of has me baffled? any ideas

[KimMG]

Where is it leaking from? Is there a puddle?
Leaks can come from anywhere in the cooling system.
Some autoparts stores rent or loan tools. See if you can get a cooling system pressure tester. It looks a little like a bicycle pump. Pressurize the system and see if you can find the leak.
Look for water stains that may help to identify the leak.

[fourwd1]

Originally Posted by KimMG

Pressurize the system and see if you can find the leak.
Look for water stains that may help to identify the leak.

2 very good suggestions.

Check around radiator and heater hose connections, all around the water pump, freeze plugs in the block, and with the 3.0 could even be a intake manifold gasket problem.