Features: * Function: Dual purpose test tool, monitoring system performance with the analog gauge or testing air leak. Check the leak in the engine's high-pressure oil system that runs fuel injectors, and find the precise source of leakage. Save your time and your money. * Easy To Use: For air leak testing, simply supply shop air pressure through the ICP sensor port or available plugged oil rail port, and connect 12V to the IPR. No need to remove the IPR valve, and no adapter needed to screw in place of the IPR. No fancy diagnostic scan tools needed. .
