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Regarding to my experience ,there are some possible cause for this issue : 1. Engine : Death Ignition /Spark Plug,which is lead to unbalance power on crank shaft.Long term operation in this situation might lead to broken/damage shaft. 2.Low pressure on 1 or more combustion chamber,due to leaking on piston rings.It is also could make unbalance on mechanical operation of the engine. 3.False setting on Actuator,which lead the false response/compenstion time of the fuel demand. 4.Broken governor ( false setting) : try to adjust the gain and stability setpoint. Please note : Adjust engine stability first by set-up gain & Stability.After stability obtain,adjust the speed to the nominal speed ( ie : 1500 rpm).Initial speed setting is the factory setting,so it won't far enough from your nominal setting point. 5.Bent actuator linkage ,it is causing the compenstaion curve is not in good order.Please check for the linkage. 6.In case of the engine is the prime mover of a generator,electrical cause might lead to this situation ; ie : unbalance of excitation on the field winding.The possible source could be ,unbalance value of the insulation which lead on unbalance magnetic flux. Hints : on AVR ; try to adjust STAB ( Stability ) setpoint if available. 7.Ground faulty on speed input device ( MPU = Magnetic Pick-Up Unit ) .Check the +/Ground impedance value and compare to the -/Ground impedance value.It should not to be zero.That's why it is better to have coaxial signal cable on this input,to avoid any ground noise.If you have power analyzer,check for the signal noise. Last,but I hope it is not the last clue is mechanical damage on flywheel,which leads to bad signal from MPU.manually rotate the crankshaft and see the condition of the flywheel for any mechanical damage posibility. For initial action : try to disconnect the engine from the driven load.See; if the hunting is gone ,the hunting must be comes from the load side.But if the hunting still present ,it must be comes from the engine itself. Have a good Troublehooting bro ^_^ iWe - Borneo
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∙ 14y ago
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What is the difference between a Gas turbine engine and a piston engine?
a compressor does work on the gas , raising its pressure and temperaturea turbine does the reverse , it expands the gas as it passes through the turbine, extracting energy from the gas to do mechanical work.For a typical jet engine , the flow track on a compressor is of a converging cross section while is it diverging for the turbine, which is as per gas dynamic laws.The Turbine does two things here in the jet engine, one ,it runs the compressor and two, expands the gas to the propelling nozzle which produces thrust by accelerating the gas upto its exit.
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diesel and gasoline engines
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A gas turbine engine will usually yield more power by weight than a piston engine. Main downside is that it can't be throttled very well. Energy efficiency isn't all that good to start with, and will drop right down if it has to be operated outside its optimum range.
When did Etienne Lenoir invent the gas engine?
in 1860
Will engine light come on if you pump gas while sport trac is running?
It can.
Is it legal to leave your engine running while pumping gas in Minnesota?
yes its a law
Why does your engine stop running while driving in your 2000 focus?
no gas or fuel pump not working.
How do you relieve the gas presssure in a car?
Pull the fuse for the fuel pump while the engine is running.
Why would a Chevy cavalier stop running while driving?
blown engine, out of gas janitorial duties.
Signs of running out of gas?
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Carburetor needle valve probably leaking while engine is not running causing gas to run down the cylinders into the crankcase.
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yes but you will waste a lot of gas and you probably want to put it in park or it will roll away and you will die
Is running out of gas cause for the check engine light to come on?
Running out of gas my certainly be a cause for the check engine light to come on. It could also be an assortment of other issues.
Does the Mercedes 2003 and above consume gas if it's running and i am not pressing the gas pedal?
If the engine is running it is burning fuel, whether the gas pedal is pressed or not.
What is causing gas to run out while the engine is running from directly under the cab of your Mazda truck?
Sounds to me like you may have rotted fuel lines.
