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19 how to remove the exhaust valve on sylphy engine?

19 sylphy engine upper waste gas valve removal method is as follows:

1. First, open the front cover of 19 model and remove the upper cover of the engine, and you can see the position of the waste gas valve.

2. Secondly, unplug the hose connecting the waste gas valve and the intake pipe.

3. Finally, pull out the plugs of the four live wire coils, pull out the coils 3 and 4 by hand, and remove a circle of screws around the waste gas valve by T30 panel hand, thus removing the 19 hacker waste gas valve.