My bike has low-endbog - 2003 Honda CR 125 R

indicates that the voltage regulator is not working and the idle drop is from not enough power getting to the electronics because of the head light drain

Low oil level safety switch, low fuel in carby float. Possible that if your bike has one, some bikes have a side stand switch that cuts out the engine if the bike is on its side stand, it may be sticking in the on position ??

-Nothing will last. Keep charging when it's low.

Good luck
Mai

You next need to do a leak down test which will answer your question about the low compression.

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.

Hi ravindra_sih,

If Bike Pick up is very Low :-

Check the two spar plugs if both are fine and if not then replace them.

If Bike's pick up is very low :-

Replace the cluth plates and the pressure if the problems persists after changing the spark plugs.

If you witness low speed riding knocking sound :-
Clean the carburettor and the air filter and this is also a problem due to damaged clutch plates.

you might need to clean you stator(altinator) or maybe get a new one for you spark to work right if you have already changed the coil.also bad gas can do it also or low fuel.when the tank is low put your bike gas valve on reserve.A friends bike was running badly and all i did was put it on reserve cause the tank was low and the bike ran great after that.

The Polaris RMK and Victory Vegas Low are the exact same bike with different colors and names.
They are made by Ming Cycle in Taiwan and are distributed by an American company-----Cycle Force Group.

The Polaris and Victory are Ming's top of the line dual suspension mountain bike, they have upgraded wheels, front disk brakes and 19" frame. If color doesn't matter to you, then the Victory Vegas Low is usually the better deal.-------Can be found on Amazon, Wall mart, Miejer.

The Polaris and Victory generally have the best reviews and ratings of any dual suspension mountain bikes priced below $250

Clean the fuel system components.

Check spark plugs. Drive chain tension. valve clearance, exhaust system

Clean the carburetor. Move the clip on the jet needle downward one or two notches if your model has a stepped jet needle.