by Sean Griffin » 2 years ago
Brett - from my automotive experience;
Get a friend(s) to assist - this way you can have eyes on the cooling system, while one person does the pressurising.
Clamp off your overflow line befog you start
You don't need much pressure - a repurposed plastic cap, that just fits inside/outside the expansion tank top, with a hole that just fits your air gun, can be placed/held (hand pressure) over the "expansion tank" while gently pressurising the system. The cap only needs to make a partial seal ie it does not have to be a good fit. Remove a little of the coolant before pressurising.
The additional eyes can be searching for any leaks, while the pressure person concentres on their activity.
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