9. Engine Sputtering: Engine sputtering is another symptom of bad diesel injectors. When the injector is not working properly, it can cause the engine to run lean, which means that there’s not enough fuel being injected into the engine. This can lead to a loss of power and decreased fuel efficiency. 6.7L Diesel Fuel System Contamination Diagnosis and Service Procedure Job Aid. (Revised March, 2012) Fuel contamination on 6.7L diesel engines can damage fuel system components including the High Pressure (HP) fuel injection pump and fuel injectors. Engine operation on fuels and additives that do not meet the lubrication, cooling and anti Lastly, connect the positive and negative terminals on each injector to a 12-volt battery (the one from your boat will do fine) with jumper wires. When connected to the battery, the injector will "fire," spraying the cleaning solution into the jar, and you can see the spray pattern. A quick teck tip for cleaning the deposits out of the injector cups on a diesel engine when installing new fuel injectors. Most shops will have all of the re Before replacing injectors that aren't working do this first. Many times injectors can be fixed and there is no need to remove or replace them. Amazon Affili Professional fuel-injector service (cleaning, calibration and/or repair) should be done every 300 engine-run-time hours or every three to four years. Szczerbala says that not all injectors are created equal, and defects in quality can shorten the service interval. Discuss the issue with your boatyard service manager or technician. Tips to help This little gear wrench adjustable pry bar is a great tool for popping up and removing a Detriot Diesel fuel injector. I use them all the time for other thi Just like on the pump, remove the timing pin from flywheel housing and turn it around to stick pin in hole. Hold tension in on pin while turning engine over by hand. Pin will fall in hole in flywheel when at tdc. If pin in pump is not aligned, then engine is on tdc exhaust. 5G13I5.