Guys,

I recently had my expansion tank and cap replaced due to a small crack that I didn't want to get any worse. However, I am still getting a coolant smell coming from behind the left side rear tire. There don't appear to be any leaks, and the system seems to be holding pressure very well... I removed the cap 5 hours after my morning commute and got a pronounced hiss, releasing the system pressure.

I might have a little bit of air left in the system after I had ALL of the coolant flushed, but would this cause a smell??? In any case, I will run it with the bleeder valve open tomorrow to purge any more air.

Any other likely culprits for this smell??? Could some spilled coolant still be burning off after 2 weeks of use since the tank replacement???

Thanks

 

I had my expansion tank changed out as well. Is it possible some excess coolant from the leak is still 'standing' somewhere in the car? What I did was take a hose and sprayed out the bottom of the car after I had the tank replaced to clean out and coolant the had puddled.

 

If you don't see any fresh drips on the ground, it's probably just left over coolant from when it was replaced.

 

Thanks Guys!