No, close to thermostat.Close to radiator cap?
Most have it, that's why I said "you might" need to bleed it.Trying to remember, doesn't the thermostat have a little automatic bleed valve built into it?
THERMOSTAT JIGGLE VALVE AND BLEEDER VALVE
The thermostat jiggle pin is a pin that is located in the small hole in the plate valve of the thermostat and which should always be in 12 o’clock position during installation. It helps bleed the cooling system of trapped air by allowing air to pass into the radiator, after which it can be released from the system.
I've never tried, I'll never will, not really needed.Looking at Rockauto, there is also a bypass path built into the housing. There is a plug with a Phillips/cross shaped head, but I think if you turn it, you are actually just breaking it. The plug is just needed to cap the open part from the outside, needed to make the closed path in the part. Does that actually turn and work like a bleeder?
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So, what the verdict would be?Ok, so I remembered I still had the original thermostat and housing from our '14. That plug I mentioned, definitely a bleeder screw. It's got an o-ring, a slot up the threads for flow, and the passage is only open to the engine side of the thermo.
There is a jiggle ball, also, built into the housing. It likely bleed air on its own up to about the 3/4 line on the thermostat so coolant covers the center pin. At that point, the thermo should open when it gets hot and flush the rest of the air.
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Shining a light in through the engine side of the hole shows that the passage comes to an end at the bottom of the screw hole.
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This is interesting. What does this mean? Was coolant leaking in the area of the rad cap?And I found radiator cap losing pressure.
That self bleeder valve isn't very effective. Never had one self bleed successfully without one of those 2 gallon screw on funnels.
Yes, it works, all manucturers use them, it has to be a good reason!Despite Sienile's repeated insistence that the bleeder valve doesn't works, many of us know better....... 🤣
No body does it!Well, I know I didn't bleed using that screw when I changed the thermostat. Just filled the radiator and leveled up the reservoir after running it. Everything seems fine, and it's been some time, maybe a year or so.