Lang Fuel System Restriction Test Gauge – Compuchek is used to check fuel system restriction on diesel engines with Compuchek test ports. The Lang fuel system restriction test gauge fits Compuchek test ports on the fuel systems of Cummins, International, and Detroit Diesel engines as well as other diesel engines that have been outfitted with the Compuchek test ports.

the Lang Fuel System Restriction Test Gauge for Compuchek consists of a hose assembly with a female Compuchek fitting on one end and a 3-1/2”, 30 inHg vacuum gauge on the other.