Coolant Leak from above exhaust

Coolant Leak?

spdfrk00gt said:

Hi All,

I recently removed and reinstalled my engine and trans. During which I removed the A/C system. After getting everything back together, fired right up. But I have a small coolant leak, coming from and plastic fitting just above the passenger side exhaust on the firewall. Can anyone help me out? Where does this go and how do I fix it? I didnt want to just plug it until I found out more. Thanks for the help.

Click to expand...

That plastic fitting runs to your heater core. Looks like you did not attach one of your coolant hoses to the fire wall fitting when you re-installed the engine. I believe there should be two fittings on the firewall. The coolant from the engine goes in one of the fittings, and comes back out on the other through hoses. You may have a spare hose hanging off the engine somewhere, unless you plugged the end of the hose. Do you recall what you did with the two coolant hoses coming off the rear of the engine?

That tube runs below your lower intake. Its possible that you cracked it while installing the engine.

Re-route your heater hoses!

Are you are talking about one of the plastic fittngs shown in this picture that is identified by the red circle? If you are, this is a real big and expensive repair. I would say if you don't need your heater, I would re-route your hoses that is hooked up to these plastic fittings. You will need to adapt two different pipe fittings together to accommodate the two different size hoses, like the one shown in the lower picture. Once you get the appropriate fittings adapted together, back to back, simply remove the two hoses from the plastic fittings on the firewall, and install your adaptor fittings between the two hoses with some hose clamps. You need to do it this way, to keep your coolant flowing properly through the engine, otherwise you can overheat your engine and cause major damages. The two plastic fittings on the firewall can then be covered with rubber caps sold at any auto parts store. This is probably the fastest and least expensive way to get your engine running again. Good luck, Tommy.

Plastic Fittings Location!

spdfrk00gt said:

The coolant is not from those in the red circle. Its from the black plastic on low on the firewall just above the exhaust manifold.

Click to expand...

Ok, I just used that picture as an example. No matter where your plastic fittings are located, if the coolant is leaking from one of the plastic fittings located on your firewall, it is a very expensive fix. To replace the plastic fittings, I could be wrong, however, I believe your entire AC/Heater box will have to be removed from under your dash to get to the fittings. My suggestion is just one simple way in which you can get your engine running again safely, without causing any damages to it. Good luck, Tommy.