Possible Cracked Block? 93 idi

[BlaineDavies]

I've replace the water pump and the heater core, and I still have a massive coolant leak once the engine is warmed up. Any ideas?

 

[Thewespaul]

Where is the leak coming from? Do you have combustion gasses in the coolant?

 

[BlaineDavies]

I can't pin it, it seems to be coming from above the starter or somewhere up high , but everything is wet . How would I know if I had combustion gasses in coolant?

 

[Thewespaul]

You will have bubbles in the rad when the thermostat is open. Check the block heater

 

[CDX825]

Block heater is right above the starter so that might be your issue.

 

[snicklas]

It could also be the heater hose in the passenger side head. When mine leaked, it ran down the head/exhaust manifold to the rear, and dripped by the starter.

 

[IDIBRONCO]

At least the block heater is easy enough to check. You can reach your hand around the starter enough to feel the block and see if it's wet.