Diesel engine diagnostic tips for diesel injection service : Wear safety glasses when working on a diesel injection system. When in doubt, refer to a service manual for the make of vehicle being serviced. The slightest mistake could upset engine performance or cause engine damage. Never drop a diesel injector or injection pump. They can be damaged. Remember that high pressure inside a diesel injection system can cause serious injury. Most diesel engine problems are related to the injection system. As such diagnosing diesel engine problems requires knowledge of engine and injection system operation. ENGINE MISSING A diesel engine miss results from one or more cylinders not burning fuel properly This is caused by injection system problems which include: Faulty injectors
Clogged fuel filters Incorrect Injection timing Low engine compression injection system leaks Air leaks Faulty injection pump. If diesel engine does not start it may be due to: In-operative glow plugs, Restricted air or fuel flow, Injection pump problem, Low battery power. A slow cranking speed is a common cause for starting problem. Being a compression ignition engine, a diesel engine must rank fast enough to produce sufficient heat for combustion.
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