When the engine is running in nutual or even when in gear (forward or reverse), it does not run at a steady rpm. It revs up and down no matter what the thottle is set at until the lawn mower blades are engaged. Once a load is placed on the engine, such as the engaging of the blades, it then seems to run at a steady rpm. What do we need to do?
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there is an idea that when it runs good in reverse but not in forward gears , there is a problem in bad engine mounts that is allowing the wiring to make a bad circuit for the electronics
could be a loose /bad connection for the cam/ crank sensors, injector operation or ignition control module
in forward gear , the engine reacts to the torque application and that would pull on the harness
when in reverse the reaction is opposite and not affect the wires
make sure there is 3mm play on the clutch lever , select 5th gear while engine is running and press the rear brake to stop you moving away ! with a little revs try and set off , if clutch is worn it will slip and not stall the engine ! if this happens then replace the clutch plates !
Park your RSV 1000R on a well-ventilated, level area, using its kickstand.
Start the engine and let it idle in place until the
temperature gauge built into the instrument cluster indicates a minimum
internal temperature of 180 degrees Fahrenheit. This is the motorcycle's
ideal operating temperature.
Take note of the engine idle speed, using the tachometer
needle, while the engine is running. Ideally, the engine should idle
steadily at 1,250 rpm.
Adjust the engine idle speed to 1,250 rpm, using the idle
adjuster screw hidden between the lower right edge of the fuel tank and
the upper edge of the right middle fairing panel. Turn the idle adjuster
screw clockwise to increase the engine idle speed, or counterclockwise
to decrease the engine idle speed, using a small flat screwdriver if
your RSV 1000R's frame (VIN number) precedes ZD4MEE009YS000292. A
plastic knob allows the engine idle speed to adjusted by hand on RSV
1000R models with a frame (VIN) numbers starting from ZD4MEE009YS000293.
Rev the engine two to three times and observe the
tachometer. The engine should return to a 1,250 rpm idle. Adjust the
engine idle speed as needed, using the method described, then rev the
engine again. Problems may exist within the throttle control,
fuel-injection system or engine, if the engine idle speed will not hold
steady at 1,250 rpm. Contact your local Aprilia service facility for
Stop the engine, once you have obtained a steady 1,250 rpm idle speed.
The computer can't sense movement. An engine with worn spark plugs or bad coils can run perfectly fine at idle and begin misfire the second you put it into gear or under loads. Plugs/coils misfire most when under load. Have you checked them?
If it is a Stick shift or an Automatic, the engine speed needs to be at least 750 RPM, after the gear has been selected. Either Forward, or Reverse. Get the Engine "Warmed up", and make the necessary adjustment on the Throttle speed adjuster screw. Regards,DT
the engine tickover is too slow when the engine is cold its running on cold start, ie:choke,, after it warms up the engine slows down this is what is causing it to stall in gear,, get some one to hold the brakes hard on and with the engine running in gear ajust the tick over till its reving at 750 - 850 rpm the revs will go up a bit when its out of gear,, before you pick a gear to go into push the foot brake down to stop the car lurching,,,
Hi, did you buy your engine used? Sounds like your gonna have to get the carb or carbs cleaned. Its possible you could have a stopped up fuel filter, or not enough spark but i am guessing its gonna be the carbs. They got some gunk in em i bet. Probably old fuel turned to gunk from setting up. I had the same problem on my 40 horse.