Coolant change with bleed kit

Technical questions and answers about the Mazda Bongo

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bazzog
Junior Bongonaut
Posts: 14
Joined: Fri Mar 08, 2024 7:53 am

Coolant change with bleed kit

Post by bazzog » Tue Oct 21, 2025 4:44 pm

Hi, I've done a coolant change on my 99 2.5td bongo
It is fitted with a rusty's bleed kit, i squeezed the hose bottom of radiator and going into engine numerous times, the level seems stable however the air ftom the heating system isn't very warm
I've driven it for about an hour and it seems to run fine
Should the bleed kit get rid of any air locks or is there something to worry about
Tia
gilly99
Bongolier
Posts: 107
Joined: Mon Jul 02, 2012 6:20 pm
Location: Bristol, UK

Re: Coolant change with bleed kit

Post by gilly99 » Tue Oct 21, 2025 6:41 pm

I have looked at that kit, but am not confident it would clear an air-lock. Bleeding properly via see-saw is a pain, but is the safest bet in my opinion.

Have thought about buying the kit, installing, bleeding normally and then introducing a small amount of air via the top pressure hose that would then be running to the header and seeing if it does actually self-bleed.... maybe teeing-off and retaining the top pressure hose under the seat to keep see-saw capability?

Am completely paranoid about the coolant system, so personally would not trust the self-bleed kit unless proven to work by testing, although even if it does not work, think no harm done if installed properly. Just my opinion.
4wd diesel, 1999 ex tintop with lowline raising roof
Keep a cool head, black ball game.
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