What procedure should be carried out for a new diesel engine or an engine that has been out service before starting using compress air?
please follow the below procedure.
check engine lube oil level. check engine coolant level and related to the cooling system lubricate the engine main bearing using some external pump, you can connect the pump to the lube oil gallery or if there is a pump on the engine then prime the lube oil system with it. make sure the lube oil pressure indicator works while priming. rotate the engine manually using the turning tool.
make 100% sure the fuel system works properly before cranking the engine. check the fuel pump rack moves freely from the levers on the fuel pump if the pump is Bosch type. well here the main concern is fuel system should work or must have the possibility for the fuel cut off. be prepared to cut off air supply ( Air intake) to the engine in case you can not control the engine speed. may be you can put a flange on the turbocharger or intake manifold in case the engine goes out of control. Bleed air from the fuel system. crank the engine for starting.
you may not get the engine run at the first or two cranks. may be you can lubricate the intake for better compression if the engine does not run.
start the engine at idle. check for the lube oil pressure if the engine starts and things look normal. immediately shut down the engine if no oil pressure, find the cause before restarting starting.
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