English 
boat gauge instrument panel rpm gauge jumping
If boat gauge instrument panel rpm gauge jumping , the reasons for abnormal display of marine instrument tachometer are:
1.If the boat gauge instrument panel rpm gauge tachometer is damaged , replace it with a new instrument for detection. If it is damaged , replace it directly.
Once the wheel speed sensor is really damaged, it will not only cause a certain deviation in the vehicle speed display on the instrument , but also cause unstable idle speed and poor acceleration performance of the engine . Secondly , when the vehicle starts or decelerates and stops while driving , it is easy to stop for a moment. It is even possible to stop the engine directly, which directly affects the safety of driving to a certain extent. In general, the impact of wheel speed sensor damage is relatively serious, so when the wheel speed sensor fails , it must be timely repaired or replaced . During the use of the equipment, try not to have a large impact load . This usually happens when the test is just started or ended. If the start or stop is completed in an instant, the elastic bearing of the torque and speed sensor will bear too much torque due to the effect of inertia, which will cause damage . Therefore, reduce the inertia of the coupling as much as possible to protect the equipment.
The change of ambient temperature will cause measurement error . Since the modulus of the elastic shaft of the torque speed sensor is not a constant, it will change with the change of temperature . When the ambient temperature is inconsistent with the calibrated temperature , the coefficient value of the sensor should be corrected to ensure the measurement accuracy .
2.If the boat gauge instrument panel rpm gauge sensor is damaged , loose or damaged, replace it with a new sensor for detection. If it is damaged, replace it directly .
3.The sensing line is damaged . Can replace a new one .
4.Unstable engine speed may be caused by excessive carbon deposition at throttle, idle motor, intake port, intake valve, combustion chamber and fuel injection nozzle. Clean the fuel injection nozzle and intake manifold, check and clean the carbon deposits inside the throttle valve and combustion chamber. Because the carbon deposits will absorb a certain amount of mixture during cold starting, which will lead to the lean mixture during starting and poor atomization of the mixture, resulting in uneven combustion state of the engine.
Get a Quote / Info