Runs and starts fine but will not rev over 9,000 rpms, in neutrol or going down the road, runs great, starts great, revs good till 9,000. wont go over lke it cuts out. idles good. what is it, 98 gsxr 750 srad.

Intake leak of bad mass airflow sensor. You can clean a MAF.

check fuel pump pressure first ,

my monterosport 2001 runs great till you come to a stop sign the rpms drop and it dies start it back up revs itself and rpms drop and it dies. we can start it up rev it and it clearsup and idles but later on when you come to a stop it dies again we have cleaned the egr valave and still same thing could the tps be the problem or what?

when motor cold it will rev up around 2000 then drope down

Have the idle/air control valve checked, the pintal inside could be stuck or just needs cleaning.

Maybe this will help. This is a common problem that I have had with my GV250. Almost the same bike mechanically by Hyosung.

If the battery is low on charge and you are lucky enough for the bike to start. As per normal when first started it revs higher because the bike is cold, this turns the alternator fast to give you the electricity you need to keep the bikes computer working properly. Bike will warm up and revs drop down, alternater not turning as fast, not as much electricity being made. Bike will either stall or rev up and down irradically to try to produce its own electricity. This will occur when the battery charge is low and bike is at low revs, for example when you slow down for traffic or you stop.

If this is your problem. To resolve it when you are out on the road, keep the revs up, twisting your throttle gently when you are going slow or stopped. Give the bike a good long run on the open road to give the battery some charge from the alternator.

Make sure your battery is maintained. If you dont use your bike for a while it will lose charge just sitting there doing nothing. Give the battery a good deep cycle charge or take the bike for a good long open road ride.

3 k is getting into intermediate circut id check the needle & this area of carb personaly id drop the bowl & clean all gets & bowl area. if that does not help remove card % clean all passages.. I have found great help at harleytalhing.com..its a forum...good luck..

Has the cableing suffered any damage?

2 things need to be done first start your bike get a can of wd40 after your bike is warm and running spray around the carb jointsall 4 of them if your engine changes rpms up or down you have a intake leak ether your carb joint gaskets or o-rings need replacing or your carb joints are old and need replacing. at this point wont hurt to have you carbs cleaned also

i had the same problem ! i dont know how but there was water mxit in my tank and i dumpd the fuel then it was fine