• Sign Up! To view all forums and unlock additional cool features

    Welcome to the #1 Fiesta ST Forum and Fiesta ST community dedicated to Fiesta ST owners and enthusiasts. Register for an account, it's free and it's easy, so don't hesitate to join the Fiesta ST Forum today!


Coolant Bubbling After Flush. HELP PLEASE!

Messages
1
Likes
0
Location
Florida
#1
So I recently went to a drive-through oil change center and had them change my oil. They also flushed my coolant while they were at it.

Later that evening, after parking my car, I noticed that there was a lot of bubbling coming from the coolant reservoir. I took it back, they flushed again, and the problem persisted.

Today, I went to Ford and they properly bled the system but I'm still noticing bubbling. The car had never once done this before the flush, so I assume there is still some air trapped in the system somewhere.

Anyone know of a surefire way to get this fixed without going to a shop for a third time? Will this go away over time or do I need to vent/burp the remaining air out of the system? If so, how do I do that?

Keep in mind that I'm not very mechanically inclined. Any help would be greatly appreciated!
 


Messages
867
Likes
1,430
Location
San Francisco Bay Area
#2
Is it foam or just clean bubbles coming out? Any overheating issues?

If it’s foaming in the expansion tank, they didn’t rinse out the flush mix well enough.

If it’s just clean bubbles, it might just be air leaving the system because they did a crappy job bleeding it (this car requires a vacuum bleed/fill if you actually want to fully purge the system first try)

If the tank is hot, the engine is overheating, the coolant could be boiling, but you’d likely have an overheat warning on the dash.

For clean bubbles, my advice is just keep driving, don’t push the car too hard and top off the coolant as the level goes down (because the bubbles are escaping). It might take quite a while for it to all come out, especially if they didn’t get coolant to the heater core (by running the heater) during the refill.
 


Similar threads



Top