Thread: How long to bleed the coolant.

I changed my thermastat and thought I bleed my system ok. It pised a solid stream for a few seconds then kinda muttered down to not much then pissed hard again. How long exactly should this screw "piss" coolant for is the few second stream work or does it have to be non stop for a minute or so to show 100% no air. Sumthing so easy so hard.

You may have to bleed the system a few times after a couple trips. Air is a "son of a gun" and gets trapped in areas that at times may require you to mildly accelerate your vehicle to force the air to move and then re-bleed. I have done this in several vehicles.