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Leakage test
We have already dealt with the subject of additional air-intake before. In the case of leakages, the problem is in fact, much greater. After all, there
are so many places where leaks can occur in a vehicle with a combustion engine, that we can't go into all of them here. This is why, at the moment, we'll have to be content with the leakage test of the inlet manifold.
The medium used to create a certain amount of pressure, comes in a suitable pressurised bottle. Here one can apply air at the inlet manifold. Were, e.g., a petrol tank to be tested, one could only use carbon dioxide or
nitrogen, otherwise there would be the danger of explosion. Right now we'll stay on the subject of additional air.
In the above picture and in the video below, the input channels are hermetically sealed. However, one can increase the influx of the gases saved in the pressure-bottle, and later heated to such an extent, that it can
escape more strongly than through possibly opened valves.
An additive in the gas makes the leak visible under UV-light. Of course, like this, one could trace the leak, e.g. to the brake-booster. As soon as the device is connected to a 12 volt source and to the area to be tested, its
flow-meter-gauge will show if a leak exists.
Should an air-conditioner be completely emptied, one could even do the test here, using this apparatus. It would however, be fairly difficult to mark out all the areas where these devices could be applied. After all,
possible leakages are a part of everyday life in a workshop. 10/14
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