Forgive laziness and grammar I did this once already and the site deleted. So my patience is limited now.
So to begin my problem. The bike has 640 miles on this 7g kit. I was riding today and went through some roughish terrain.
After that the bike idled down sharply. It didn't shut off but would not go over 5mph. (top end is 24 usually maintained at 19-21 mph) It was like it was choked or fuel starved. I pulled over and let it idle. It improved a little bit. Enough to put home for 8 miles.
So in short. It idles... if a little off smoothly. If I full throttle it stalls and stops when the bike is not moving. If the bike is moving it bogs down but will eventually build up speed.
Now I am home. Repair attempts include:
- Add a little teeny weeny bit of oil. Not enough to matter.
- Remove carb. Clean carb parts... jets, float needle et cetera.
- New ignition coil arrived today by coincidence. ( The original had a near rub through, but still works.) Took off old coil applied new coil... come to find out the new one was used and sold as new. The new old coil is a bust. Reinstalled old coil. Bike still runs with old coil. This may be the issue but I won’t know till I can get a new coil.
UPDATE: Got another known working coil and installed it to my bike. No change. Put my coil back on. Gave the known good back to my friend.
Results:
Runs a little better. Learned that the carb could probably stand cleaning about every 400-600 miles. (Not hard at all) (BTW the black ovalish thing under the idle screw is a jet.
Still stalls out when throttled. (No adjustment to speak of that I can see, other than idle screw.) There were some washers on the needle but I am not sure those are meant to be messed with.
UPDATE: Now runs up all the way. The engine still stalls (Immediate stall not a putter down.) when throttle is jammed. However if I don’t break about 15-20 throttle it will idle up just fine. Then after 8-12 MPH it is fine to throttle at will. I have cleaned the carb a second time. I have looked around it seems that there is another carb for the huasheng. The one I have has a brass needle that injects the fuel into the inlet. The is a set needle, and cannot be adjusted or removed… stupid IMO. The other carb I saw had some form of adjustment screw to adjust fuel flow… this would allow you to remove it for proper cleaning.
Now my thoughts thus far. New plug, new coil, cleaned carb two times. ( I believe the carb made the biggest difference.) With that said I think it is a carb problem. Since they made the atomizer/fuel mix needle/Metering valve, not adjustable and not removable, it is the only place that I can’t get some brake cable into to dislodge anything that may be stuck. I was able to get the red tube of the carb cleaner can to bend just enough to back flow some cleaner through it. Again minor improvement. I still have immediate stall.
Another thing of not when I release throttle I am getting back firing. Is this related or some kind of fuel timing thing.
So to begin my problem. The bike has 640 miles on this 7g kit. I was riding today and went through some roughish terrain.
After that the bike idled down sharply. It didn't shut off but would not go over 5mph. (top end is 24 usually maintained at 19-21 mph) It was like it was choked or fuel starved. I pulled over and let it idle. It improved a little bit. Enough to put home for 8 miles.
So in short. It idles... if a little off smoothly. If I full throttle it stalls and stops when the bike is not moving. If the bike is moving it bogs down but will eventually build up speed.
Now I am home. Repair attempts include:
- Add a little teeny weeny bit of oil. Not enough to matter.
- Remove carb. Clean carb parts... jets, float needle et cetera.
- New ignition coil arrived today by coincidence. ( The original had a near rub through, but still works.) Took off old coil applied new coil... come to find out the new one was used and sold as new. The new old coil is a bust. Reinstalled old coil. Bike still runs with old coil. This may be the issue but I won’t know till I can get a new coil.
UPDATE: Got another known working coil and installed it to my bike. No change. Put my coil back on. Gave the known good back to my friend.
Results:
Runs a little better. Learned that the carb could probably stand cleaning about every 400-600 miles. (Not hard at all) (BTW the black ovalish thing under the idle screw is a jet.
Still stalls out when throttled. (No adjustment to speak of that I can see, other than idle screw.) There were some washers on the needle but I am not sure those are meant to be messed with.
UPDATE: Now runs up all the way. The engine still stalls (Immediate stall not a putter down.) when throttle is jammed. However if I don’t break about 15-20 throttle it will idle up just fine. Then after 8-12 MPH it is fine to throttle at will. I have cleaned the carb a second time. I have looked around it seems that there is another carb for the huasheng. The one I have has a brass needle that injects the fuel into the inlet. The is a set needle, and cannot be adjusted or removed… stupid IMO. The other carb I saw had some form of adjustment screw to adjust fuel flow… this would allow you to remove it for proper cleaning.
Now my thoughts thus far. New plug, new coil, cleaned carb two times. ( I believe the carb made the biggest difference.) With that said I think it is a carb problem. Since they made the atomizer/fuel mix needle/Metering valve, not adjustable and not removable, it is the only place that I can’t get some brake cable into to dislodge anything that may be stuck. I was able to get the red tube of the carb cleaner can to bend just enough to back flow some cleaner through it. Again minor improvement. I still have immediate stall.
Another thing of not when I release throttle I am getting back firing. Is this related or some kind of fuel timing thing.
