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Engine shutting down while accelerating - 2006 Hero Honda Karizma

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Elaborate your problem properly so that it can be better understood and then better explained. Well for now i can suggest you to check your air filter,or the air intake of your bike. because whenever or wherever the air intake bloks,it results in engine shutting on higher speeds.

Posted on Apr 19, 2009

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Why is my carburetor leaking fuel after I turn off my motor

It is most likely that your shut off valve is leaking (as fuel flow should be shut off with no vacuum applied to it). If the float level is okay, and it must be set very precisely at 0.413 - 0.453 inches with the carb tilted no more than 20 degrees and no less than 15 degrees, (if the float level is the problem such that the fuel supply would be too high in the float bowl and depending on how far out it is set ie how high the fuel is allowed to rise in the float bowl it would likely be leaking out the overflow and not the carburetor itself). As unlikely as it would be to have fuel flowing out the accelerator pump circuit and discharge port you would easily be able to identify such a leak by seeing it flow out of the accelerator pump discharge port in the front part of the carb throat. If the needle and seat are not sealing and fuel flow was available from the shut off valve as it should not be with no vacuum applied to it then it would not matter that the float level was set correctly because it would continue to flow past the needle ans seat when the float had risen to the proper shut off point. In this case it might leak out of the main discharge port before the level became high enough for it to leak out of the overflow or it might leak out both. It is doubtful that a defective enrichener would cause a leak because the fuel would have to rise to high to emerge from the enrichener discharge ports. It might leak out the off idle discharge ports but these are behind the venturi piston and the butterfly valve so you would have to raise the former and open the latter to see if fuel was emerging from these ports. I have not dealt much with H-D CV carbs but my understanding of them leads me to suggest the above. SO, a leaking carb with the engine shut off is most likely to be a result of a defective fuel tank valve so first remove the fuel hose from the shut off valve and see if there is fuel draining from the nipple at the valve or if you take it off at the carb if there is any fuel leaking out of the fuel line you removed from the carb.....There should be no fuel flow with the engine off and no vacuum. If there is no fuel flow here there should be no fuel flow from the carb unless the float level is out and the fuel level in the float bowl has risen too high before the fuel valve shut of fuel flow. Even so the fuel leak should not be continuous but only as much as there was fuel in the fuel line and carb downstream of the shut off valve. If the leak is continuous you know the valve is the first problem and then you also have a float level setting that is out allowing too much fuel into the float bowl and/or the needle and seat are not sealing and shutting off the flow when the float rises to the proper shut off height. Or, you could have a gasket leak at the float bowl. If there is no fuel flow from the fuel shut off valve and the float level is correct there likewise should be no flow from the accelerator pump (or any other circuit) because the fuel level would never be high enough to flow out the discharge the accelerator discharge or other ports. Remember that the accelerator pump check valve only operates when the fuel is being forced out of the accelerator pump circuit ie the valve does not stop or control fuel flow into the accelerator pump diaphragm area, it only stops flow back to the float bowl area when fuel is being pressurized to force fuel up and out the discharge port. I hope this helps somewhat in diagnosing your leak.

Nov 14, 2014 | 2003 Harley Davidson FXDWG Dyna Wide Glide

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Rattling/knocking noise under low acceleration?

Afraid that sounds like the ends are gone, the best way to tell is to get a compression test done on it, but you can usually work it out for yourself.
The engine is under most strain when the power demand is highest for example when accelerating uphill from a slow rolling speed. you will also get the knocking on the overrun, i.e when you have been running at a higher speed and you shut the throttle. When maintaining the same speed does the knocking get more or less? if its less then its almost certain the ends have gone
If as I think it is the ends (usually the big ends rather than the little ends) I afraid its probably terminal. the cost of repair would be too high.
Be careful when riding as the probable result of worn end shells is a con rod through the side of the block and at speed that could be seriously dangerous

Jan 23, 2014 | Suzuki Motorcycles

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I think the accelerator for vento scooter is stuck and when it shuts off makes a weird noise

You should know it if the accelerator (throttle) is stuck. If the throttle moves freely and the engine responds, it's not stuck. If the engine doesn't respond to input from the throttle it needs to be thoroughly checked from the throttle assembly on the handlebars to the carburetor. A corroded, kinked, or frayed cable can cause the throttle to stick. DO NOT RIDE WITH A STUCK THROTTLE! If it does hang wide open, hit the kill switch immediately and sort the issue out before trying to start the scooter again.

Jan 06, 2014 | Motorcycles

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I have a 96 1200 bandit.when cold it revs up and down as it shud do but once warm when u let off the throttle and change gear the revs take few seconds to go down the engine still revs on etc. carbs av...

When a engine is cold the revs should be higher ( choke on ) but nit going up and down. If you release the accelerator and the engine still rev's up maybe the accelerator cables are not properly installed on the carbs. Also a air leak is possible. Check the cables and air leaks at manifold including the holes from manifold where vacuum gauges should insert when carb calibration is necessary. Those holes should have some caps on.

Oct 19, 2013 | 1997 Suzuki GSF 1200 Bandit S

1 Answer

Virago 535 will not back down to idle immediately

check throtle cable is routed properly and make sure cable is lubricated

Feb 15, 2012 | Yamaha XV 535 Virago DX Motorcycles

1 Answer

Going up hill engine shut down

Not enough information for us to make a suggestion. You say the engine shut down? Is the engine seized up or will it start back up? Did the engine make a noise before it shut down? Did it sputter or cough before it shut down? We need more information before we can make any suggestions.

Jul 19, 2010 | 2000 Harley Davidson FLHT Electra Glide...

1 Answer

My Bajaj Pulsar 150 starts normally, but when i use the accelerator it shuts down. With choke in use the engine keeps running. There might be soem water in my fuel tank. Can anyoe help me with this.

it may be Engine jam problem,check the OIL,
secondly it may be air chocking up in between ur up ur tank gve a hard air blow into it & close immediately
3rd water in tank,contact mechanic to clean up ur tank

May 04, 2010 | 2007 Bajaj Pulsar 150

1 Answer

I was riding my DR 250 4 stroke suzuki yesterday and suddenly I felt it is going to shut down when I accelerate, and now I cant drive it, because when I accelerate, the motorcycle shuts down, I can start...

The problem you describe could be several different things, however, I will post a solution for the most likely. The fact the the shut down occurs when you attempt to accelerate, indicates it is "starving", running out of fuel when you call for it. When you open the throttle, typically, you allow the engine to injest more fuel/air mix, thus the rpms go up. In your situation, your carb reponds to you opening the throttle by allowing more air, but the same amount of fuel, thus the mixture leans out, (too much air, not enough fuel to fire). The likely cause is an obstruction in the fuel delivery system. Could be a clogged fuel filter, trash in the fuel. A piece of trash in a carb jet. The fix is to check and clean everything in the lines, the filter, and possibly the carb. Hope this helps...GOOD LUCK!

Oct 16, 2009 | Suzuki DR-Z 250 Motorcycles

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