... and engine oil tester check oil pressure in automatic transmission. Adapters cover all auto type It is necessary to test fuel pressure during trouble ... Group Corporation and Shanghai Volkswagen Co., Ltd., such as Audi, Passat, Santana, Red Flag ,Golf and Jetta, etc.2. Main ... 7, Connector 8, Connector 9, Gauge outfit(2). Relieve pressure on fuel system according to procedures listed in car maintenance ...