Fuel System - Operation and Tests/Fuel Injection Nozzles TESTING FUEL INJECTION NOZZLES ON A RUNNING ENGINE Run engine at intermediate speed under no load. Slowly loosen fuel pressure line at one of the injection nozzles so that the fuel escapes at the line connection and is not forced through the nozzle (nozzle not opening). If there is a change in engine speed, this indicates that the nozzle is in order. If there is no change in engine speed, nozzle is faulty. 220 25 Repeat test consecutively at each of the remaining nozzles. When a faulty fuel injection nozzle is found, remove it and check thoroughly as described in Group 40.
CD,3274,G220,16-19-15MAY92 CTM3274 (01JUL99) 220-25 Saran Liter Engines 060799 PN=364