Question about 2010 Aprilia RX 50
Flat spot at low revs
Posted by Anonymous on
Hi, Anonymous and the usual suspects are:
1. Idle speed improperly adjusted.
2. Inlet system air leak.
3. Damaged or restricted fuel tank venting system.
4. Dirty or damaged air cleaner element.
5. The accelerator pump is inoperative.
6. Vacuum piston assembly malfunction.
7. Enrichner valve is not seated or leaking.
8. Restricted fuel supply tract.
9. Plugged bowl vent.
10. Loose or plugged fuel and air jets or passages.
11. Improper fuel level.
12. Worn or damaged needle or needle jet.
13. Loose or plugged main jets or passages.
For more information about your issue please visit the websites below. Good luck and have a nice day.
DOWNLOAD 2010 Aprilia Rx 50
Posted on Oct 27, 2015
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Posted on Jan 02, 2017
Hi and welcome to FixYa,
Jet size would depend which carb is installed, a Dellorto 34mm?
Initially, check the sparkplug tip colors. If very light brown to almost whitish, then lean mix; too much air, too little gas. Try raising the needle if if has notches and moving the e-clip. If fixed, use small thin washers. The basic idea is to make the needle rise early on throttle movement.
If an aftermarket open breather air filter is installed, then it would be causing the lean mix, too much air. Restrict the filter by adding temporarily upholstery foam to experiment at which thickness the flatspot would disappear.
Good luck and thank you for asking FixYa. Happy Holidays.
Posted on Dec 17, 2009
Brizzy luke i have the exact same bike and problem i replaced the spark plugg knowing these bikes like to eat them but still same problem was fine when forst got bike but all of a sudden it happend den been like dat since rele annoyin ay when sitting at lights i hav to sit a rev bike to stop it from stalling hopefully some one has a soloution
Posted on Mar 18, 2012
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