Evaluation: Injected quantity display

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V.A.G 1551 display	Possible cause of malfunction	Corrective action
Below 2.2 mg/H	Injection pump too rich	Replace injection pump → Injection pump, removing and installing
Above 9.0 mg/H	Engine too cold	Run engine at increased speed to warm up and repeat check
	Injection pump too lean	Replace injection pump → Injection pump, removing and installing