Coolant leak back of engine

[BruceExploder]

Anybody have a clue where this might be coming from. Wife called complaining of coolant smell and smoke with coolant leaking under car. I found this at the back of the engine but it had stopped smoking I’m not sure where it could be leaking at I’m more used to my 2nd gen

 

[donalds]

Rent or buy a coolant system pressure tester from autozone etc...
The leak will show itself quickly

 

[shane10]

Rent or buy a coolant system pressure tester from autozone etc...
The leak will show itself quickly

X2, pressurize and listen/look for a leak.
Hard to tell by the pictures what exactly we're looking at here, heater core hoses possibly?

 

[BruceExploder]

I think i found it. little cap on the passanger side by the firewall fell off when i touched it. guess ill have to replace that

 

[BruceExploder]

 

[Davies0202]

I keep an extra in my glove box as that cap has burst 3 times now

 

[fordysenior]

I found buying those caps to be a waste of money -- they don't last. Buy a short section of heater hose, cap it with a sharkbite fitting, or a bolt and sealant, or whatever you can come up with. Use standard cam type hose clamps to assemble it. I had one of those caps with the spring type clamp and under hard acceleration, the cap flew off and coolant went everywhere.