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Hi Todd, sure sounds like a fuel problem, since i dont if you have carb or fuel injection lets start with your carb. remove the float bowl and see if there is water in the bottom. if so remove fuel tank drain it completely clean the filter then air blow it dry also mahe sure the line from petcock to carb is not pinched or bent to restrict flow then check your vacuum line to the petcock is attached at both ends and is not cracked max vacuum is necessary to pull the diaphram in the petcock to allow fuel to flow, disasemble petcock and check rubber diaphram for cracks or pinholes. reasemble petcock and check with vacuum gauge to make sure its holding vacuum. put 1 gallon of uncontaminated fuel back in tank and take it for a ride.
if you have fuel injection, check fuel pump pressure sorry i dont have specs on that but call your local service dept and they can hook you up. clean fuel filter then blow dry tank and proceed as above. if none of this helps get back to me and we can try some electrical trouble shooting good luck
Hi Deniselewis6, sounds like you have a throttle slide issue carburetor needs a rebuild and I am sorry you can't find the first and best tool you ever bought for your Aprilia but despair not for a mere $10 you can download another one. For more information about your issue, please visit the websites below. Good luck and have a nice day. 1 CARB THROTTLE CABLE INSTALL EASYDOWNLOAD 2008 Aprilia Rx 125
If the bike sat for quite a while, and you didn't drain the tank and carbs, your gas probably gummed up the carbs, jets, needles, etc. If you had them cleaned... this wouldn't be the problem although it could still be a fuel problem. Have you checked the fuel filter? I have found that using a gas stabilizer when the bike is not in use, keeps this from happening.
Before I ever take my bike into the shop, after winter sitting, I always run a mixture of Sea Foam (get it at Wal-Mart) with a full tank of gas for the 1st run of the season. This will take care of most fuel issues.
If the bike ran fine prior to putting it in storage and all you did was drain the fuel and disconnect the battery, its likely moisture ( condensation) developed in the carbs while it sat. this type of thing happens when fuel is drained. Your best bet is to remove the carbs and clean the jets. Its my opinion and experience to put fresh fuel in a bike along with (stable) fuel treatment prior to storing them. With the stable added to the fuel, the fuel will hold good for about 1 year.. Replacing the battery and starting them and letting them warm up to operating temp monthly while in storage is always a good idea..
I hope this helps..
from your description, i would sugest you make sure fuel is getting to the injector unit, remove the fuel supply hose.if you have spark at the plugs and fuel getting to the injectors you have isolated the problem. i would also drain the old fuel when you take the hose off and fill the tank with high grade fuel. bikes dont like old gas.
you shouldnt have to resync the carbs as long as you dont touch the mixture screws or the screws for the throttle blades. you wont have to pull the jets completly out to clean them just spray the heck out of all the orifaces with carb cleaner once you have them pulled apart. Also whe you put it back together make shure the carb seal to the engine and airbox are tight with no leaks, this will make it run bad also
My 92 Bird with the 3.1 did the same thing after it sat for about 2 months. The car had aways started right away before. I had to jump start it and I thought it would never start.Same as yours after it started. Seem to get better after I ran it awhile. It was getting good spark and was getting fuel. I checked fuel pressure, it seemed to be within specs.then it started to sputter and the pressure dropped to almost nothing. Seems that the fuel pump was going bad, but still would pump enough fuel at times to run. When the car was parked the fuel pressure would bleed off, and when I tried to start it the pump had trouble pumping enough fuel to pressure the system.Long story short! Replace the fuel pump, and filter.....
Put the bike on level ground, support on stands, switch off petrol and drain the carbs. Close the carbs and using the pipe from the tank (disconected) to the carbs fill with a quality carb cleaner and leave overnight. Drain the carbs, connect everything back up and start up. Try and get into the habit of switching off the petrol before you stop the engine, just to partially drain the carbs, esp'ly if you intend to leave for any period of time.