Edit page title GUIDE: My motorcycle MSA grazes, how to do? - XNUMXfactory .com
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Troubleshooting > Failures par brand > MSA   > My motorcycle MSA XNUMX grazes

My boxed MSA grazes

Your mà © caboîte XNUMXcc MSA grazes when you ride? This can be due to several issues. It is possible that your machine will graze when you are driving at XNUMXkm / hpar example, or when you are just starting out. In XNUMX% of cases it is a problem gasoline . Indeed, if there is too much gasoline in your engine, it will be difficult for you to obtain optimal performance.

ma MSA grazes at low speed

Your MSA grazes at low speed

If your motorcycle MSA grazes at low speed, the problem is probably due to carburettor . In fact, most of the time it is a main jet too small. It depends on the changes you have made to your MSA but you are surely too poor in gasoline.

Example: You have a motorcycle XNUMXcc MSA with an original engine. You decide to install a new exhaust and a XNUMX carburetor. Your machine will graze at low speed if you leave the nozzle on XNUMX (original). It will rather be necessary to pass on a jet of XNUMX, see XNUMX or XNUMX.

It is also strongly recommended to check the good condition of your spark plug . If the problem persists, perform a carburetor adjustment. Finally, it can also be a cylinder head gasket damaged. In this case, it will have to be replaced (or have it replaced par a two-wheeler professional).

Your motorbike MSA grazes at high speed

If your motorcycle MSA grazes at high speed, the problem is also due to carburettor . Indeed, most of the time it is a matter of gasoline. It depends on the changes you have made to your MSA but you are surely too rich in gasoline.

Example: You have a motorbike MSA with an original engine and a XNUMX jet on your carburetor. At high revs, your machine has no more power and gives jerk when accelerating.

Start par check the condition of your spark plug, if it is black, this effectively means that you are too rich in petrol, you should try smaller nozzles. Going down from XNUMX to XNUMX. Check the spark at the spark plug, the muffler (it may be clogged) and the condition of your air filter.

Also check the condition of your base gasket. Indeed if the latter is damaged, air arrives and this can make your MSA.

Finally, be sure to put quality gasoline, this can be one of the causes of a MSA that grazes.

ma MSA grazes at high speed
ma MSA grazes at mid-speed

Your MSA grazes at half speed

If your motorcycle MSA grazes at mid-speed, the problem is probably due to carburettor . It is imperative to carry out a carburetor adjustment.

Start par adjust the richness screw while increasing the jet from XNUMX points to XNUMX points. You will quickly find the right compromise for your carburetor.

Finally, you can carry out an adjustment of carburetor needle (take it up a notch par example).

An electronic problem can also be the cause of a motorcycle that grazes at mid revs. Check the condition of the CDI box, electronic clamping and ignition if necessary.


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