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boat speedometer not working mercruiser
Boat speedometer not working mercruiser: Fault phenomenon:When the engine is started, the oil pressure is normal, but the engine runs for half a minute. After that, the oil pressure gradually decreases to "0", and the connecting rod bush.There is an abnormal noise. Turn off the engine, wait a moment and start the engine again.When the engine is running, the oil pressure returns to normal again, and the sound of the connecting rod shoe also follows,It disappears. But when the engine runs for about half a minute, the oil pressure. Gradually reduce to "0", and the sound of connecting rod shoe reappears.
(1) check whether the intake and exhaust passages are unblocked. Example: If the air filter is blocked, the exhaust brake valve is ON Open all. Then remove the return valve of low pressure oil circuit, Check whether the steel team and spring are in good condition,Whether the sealing property meets the requirements.
(2) Check the driving plate and driving plate of the fuel injection pump drive coupling. Check if the bolts between flanges are loose, if necessary,check the fuel supply timing.
(3) Check the injection pressure and injection quality of the fuel injector.
(4) Observe whether there is water in the diesel oil flowing out of the bleed screw beads, or the hand stop is at the air outlet, check whether there is water vapor on the palm.
(5) Troubleshooting: Re commission the fuel system.
The boat speedometer not working maybe also:the diesel engine runaway cannot be controlled in time. The diesel engine will be damaged in an accident, or even people will be injured casualties. Must be dealt with decisively and quickly.
The main causes of the "runaway" fault are
(1) The governor fails.
(2)High pressure oil pump rack is blocked.
(3) The stern shaft is broken.
(4) The coupling bolt is broken.
(5) The propeller falls off.
The treatment method is: 1. Pull the shutdown handle; 2 Cut off the oil inlet pipe;
If the boat speedometer abnormal meter reading:Failure cause analysis. The instrument itself is damaged, the instrument is not firmly connected, and the line or pipeline is broken.processing method: Connect firmly, replace lines, pipelines and instruments.
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