There was a guy who invented a .... thing shall I say for this exact example. He designed a ...THING ... that controlled this combustion at the end of a lawn mower cycle and manipulated it to work in a car. The car got 145 miles to the gallon, yes thats right, 145 MILES to the GALLON, he patented it and sold around 26 before a certain oil company got wind of this guys patent. This oil company then went and bought this patent and then tried to get back the 26 units already sold. Some people said no, a class action was made and to my disbelief the people got to keep the units. But yes, the particular design has never been seen again. Go figure.
If you mean the engine will rev up and down as it is running, it has been my experience that a dirty air filter is a cause of the fluctuation.
When mowing it will idle up and down because of the amount and thickness of grass you are cutting. This is because the blades will struggle cutting thick grass so the engine needs more revs to keep the blades running at a constant speed and that is also why your mower may slow down because it has used the majority of revs to cut the grass and their are not many revs left to keep the wheels spinning The up and down revving could also be caused by a dirty/clogged air filter.
Its not your engine. Its the fan running to cool the engine down. They all do it and nothing is wrong with your car.
Revving up and down is usually a symptom of a dirty air filter.
in the engine and they move up and down when it is running
The governor spring adjustments
The float on your carb is stuck down and letting gas flow into the oil thru the cylinder pass the rings and out thru the muffler.
yes, the engine fan need to b running whenever the engine is on the fan is to cool radiater, it only comes on when the engine gets to warm, to cool engine down.
Surging is the condition where the engine power fluctuates up and down with a continuous, soft jerking motion. When driving at a steady speed, the engine seems to speed up and slow down, without moving the accelerator.
Hi, The float valve is leaking through. The fuel can leak in the intake and down into the crankcase, where it dilutes the engine oil.
No. It will keep running until the engine is completely destroyed.No. It will keep running until the engine is completely destroyed.
It will while the program is running, but after it stops running there will be no change in computer speed.