Massive Coolant Leak!

[Drew]

While driving smoke underhood and coolant loss underneath vehicle near the heater core. When I add coolant it immediately leaks out from somewhere behind the firewall. Is this my heater core or what could it be? Thanks.

 

[ygmn]

More then likely yes.

 

[bassbuff]

Or the plastic connector going to the heater core. First or second gen?

 

[Drew]

Or the plastic connector going to the heater core. First or second gen?

Not sure gen

 

[Vaeagleav]

First gen AVs are 2002-2006........Second Gen AVs are 2007 -2013 fyi.....

 

[Drew]

Not sure gen

I just replaced my head gaskets and hope I didn't mess anything up putting it back together. I labelled everything and went by my Haynes manual.

 

[Drew]

First gen AVs are 2002-2006........Second Gen AVs are 2007 -2013 fyi.....

Oh I have a 2008

 

[EXT4ME]

Oh I have a 2008

You might want to put your truck's information in your profile signature.

It helps us help you if we know what you have.

Different models have different configurations.

 

[Drew]

I bypassed my heater core and the leak continued. I removed the intake manifold and discovered I failed to install a seal on a small port on the cylinder head that's where my coolant leak was from. Thanks for all input.

 

[Drew]

You might want to put your truck's information in your profile signature.

It helps us help you if we know what you have.

Different models have different configurations.

Will do thanks

 

[EXT4ME]

I bypassed my heater core and the leak continued. I removed the intake manifold and discovered I failed to install a seal on a small port on the cylinder head that's where my coolant leak was from. Thanks for all input.

Good find!