A、two to four months
B、four to six months
C、six to eight months
更多“Fuel injection valves should be taken out, cleaned, and lifting checked every （）.”相关的问题
A、late fuel injection B、early fuel injection C、high exhaust temperature from that cylinder D、decreased effective stroke from that injector
A、valve will open later B、valves will close later C、amount of fuel injected will be increased D、amount of fuel injected will be decreased
A、ensure penetration and distribution of the fuel in the combustion chamber B、ensure the needle valve is flushed clean during each injection C、prevent combustion gas blowback into the open needle valve D、prevent reflected pressure waves when the needle valve closes
A、deliver proper fuel quantity to the injection nozzle B、provide rapid fuel injection cutoff C、control fuel quantity entering the pump body D、control fuel pressure delivered to the combustion chamber
A、A.assist in a quick cutoff of fuel injection B、B.allow oil backflow from the injector to the helix C、C.reduce fuel oil pressure between injection strokes D、D.meter the quantity of fuel delivered
A、erosion and cratering of the nozzle orifices B、fuel leakage into the nozzle drain line C、fuel leakage before and after injection D、insufficient fuel delivery though that nozzle
A、Fuel injection timing will change B、Nozzle operation will be unaffected C、Fuel will leak into the drain line D、Fuel will not be delivered
A、a leaking fuel injection nozzle B、a clogged air filter C、early fuel injection D、burned valves
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