DIESEL FUEL LINE TEST
I have a quick way to test the integral fuel lines in diesel heads such as the C15 Caterpillar. I install the fuel injectors to block the ports and attached an air chuck to the fuel inlet. Next, fill the exhaust ports with water and pressurize the line. If there are any leaks in the fuel line that pass into the port, they will quickly be apparent. This process can be used for the intake side as well.
Hialeah Gardens, FL