Troubleshooting > Failures par brand > FOSTI > A liquid is leaking from the exhaust pipe of my 50cc FOSTI motorcycle
Even a slight leak can cause premature corrosion, generate additional noise and possibly disrupt the carburetion.
Warning: some pots have a hole to evacuate the condensation and thus avoid corrosion.
This phenomenon can be natural or linked to an internal dysfunction. It is necessary to know the source in 2 cases.
The substances that can come out of it in general are:
- Oil
- Gasoline
- Water
- The flame.
An oil leak at the muffler can come from several problems. The most common cause is that the amount of oil in the gasoline exceeds the recommended dose (engine 2 strokes). This imbalance causes the oil to leak out par the pot.
â†' Check it out float. If it is not doing its job, oil may leak out.ar Exhaust pipe.
â†' Check it out lip seal of the crankshaft. The deterioration causes the oil to pass par the crankshaft and is expelledar the pot.
â†' Check your oil filter. Replace if necessary.
â†' Check the wear of the segments. Do not overlook this possibility if you encounter this problem.
â†' Check your oil pump. It may be faulty.
If gasoline comes out of your muffler, your engine is flooded.
â†' Check if you ride with your startopen.
â†' Check your idle jet, it is surely too big.
If the problem persists check your carburetor, if your needle is not blocked. Do the same for your float.
The fact that water comes out of your exhaust can be completely normal, especially during the cool season. This phenomenon can be explained par the effect of condensation, it will be necessary to drive for several kilometers to overcome this. As you ride, the heat will push that moisture away through heat buildup.
â†' Check the status of your spark plug and synchronization of your carburettor.
Finally, it is necessary to specify that this phenomenon could, par accumulation of moisture, causing rust on your exhaust.
This phenomenon could come from an adjustment of the carburettor, in particular a mixture too rich in gasoline. It will then be necessary to reduce the quantity of gasoline in your carburettor. If you do not know the doses of oil and gasoline to put in, contact a professional two-wheeler who will be able to answer you.