Today, after starting up my truck and backing up in my driveway, I caught a good whiff of coolant.

When I got back home, I sniffed around and didn't notice a significant coolant smell, aside from a faint smell in the exhaust.

I didn't notice any leaks, loss of coolant, smoke or any other signs.

I know what a coolant smell usually means, but hopefully, I'm just assuming the worst. I'll be doing a tune up soon, and now, a compression test as well.

Any suggestions guys? Much appreciated.

 

I did not smell coolant, but when I started on kegger mod, I found this:



Seems others have had the same issue on tstat housing. May be a good place to start and then the bypass tube out of water pump.