Astra L4-1.8L (2009)
16. Disconnect the wiring harness plug (1).
17. Remove the supply line, fuel/air mixture preheating (1).
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Disconnect from thermostat housing.
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Disconnect the quick-release fitting.
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Disconnect from the throttle valve module.
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Release the clamp.
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Disconnect from the intake manifold.
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Remove 4 from bracket.
18. Remove the return line, fuel/air mixture preheating (2).
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Remove from the throttle valve module.
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Release the clamp.
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Remove from the coolant expansion tank.
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Release the clamp.
