Mazda bongo [ thermostat and bleeding the cooling system ]

[@MakeDoAndMend1]

Many years ago I discovered why some thermostats have a small hole in the metal ring. It's to let air and a small amount of water to flow when the thermostat is closed. Since then if they don't have the small hole I drill one. Saves time on bleeding the system as you don't have to wait for thermostat to open to let all air out. Especially on Bongos. Cheers from old George

[@billliddle6852]

i followed your guidance and replaced my thermostat, thank you. I've come away think i could have, from below, removed the two 12mm bolts dropped the bottom of the thermostat housing and replaced the thermostat that way

[@rogergallant3628]

Is the radiator cap and overflow cap on or off while you are bleeding/purging the air out? I’ve had people tell me to leave radiator cap off while idling/heating up radiator! Thanks

[@XjoWoW]

hey man i have to replace my thermostat today, do I just use water to bleed it? you say at the end of the video to do it until the thermostat opens, what happens after that?

[@pikesbikesnguns7720]

Once the thermostat opens it will allow coolant to circulate the whole system, just make sure you keep the coolant filled up in the water reservoir 👍

[@carolmutede4107]

please my Mazda bongo only start when engine cool down wat is the problem

[@SugudupakIbidAtoy]

Thanks for the detailed video, very helpful! Could I ask how can I tell if the thermostat has been removed?