The S&G TOOL AID TA56250 Multi-Port Fuel InjectionPressure Tester System is a must-have tool for any mechanic or enthusiast. This system allows you to test fuel injection pressures in multiple ports simultaneously, making it a valuable tool for diagnosing and repairing fuel injection problems. The S&G TOOL AID TA56250 Multi-Port Fuel InjectionPressure Tester System is a must-have tool for any mechanic or enthusiast. This system allows you to test fuel injection pressures in multiple ports simultaneously, making it a valuable tool for diagnosing and repairing fuel injection problems.