Oil leaks
Posted: 05 Aug 2014, 10:58
Two stroke oil leaks -
Most probably from the oil level sensor. The oil seeps out around the sensor and runs down the frame/reservoir to collect on the bottom rails before dripping on the floor. To stop this leak you need to drain down the oil to below the sensor and then thoroughly clean the sensor and the surrounding reservoir with contact cleaner. Then apply a good silicone sealant to the sensor before refitting it. Leaks can also be caused by leaking hoses or connections.
Worst of all it could be the seal between the oil pump and the crank case leaking, allowing oil to flow into the crank case and out of the crank breather tube. This is much less likely though.
Gearbox leaks -
Usually a worn seal. Can be found by cleaning the engine and looking for oil trails. Can also be cracked casing or leaking gaskets.
Oil out of the gearbox breather tube -
Often overfilling of oil in the gearbox. Otherwise can be either crank seals leaking pressure from the cylinder or the seal between the oil pump and the crank case going so two stroke oil leaks into the crank case.
Most probably from the oil level sensor. The oil seeps out around the sensor and runs down the frame/reservoir to collect on the bottom rails before dripping on the floor. To stop this leak you need to drain down the oil to below the sensor and then thoroughly clean the sensor and the surrounding reservoir with contact cleaner. Then apply a good silicone sealant to the sensor before refitting it. Leaks can also be caused by leaking hoses or connections.
Worst of all it could be the seal between the oil pump and the crank case leaking, allowing oil to flow into the crank case and out of the crank breather tube. This is much less likely though.
Gearbox leaks -
Usually a worn seal. Can be found by cleaning the engine and looking for oil trails. Can also be cracked casing or leaking gaskets.
Oil out of the gearbox breather tube -
Often overfilling of oil in the gearbox. Otherwise can be either crank seals leaking pressure from the cylinder or the seal between the oil pump and the crank case going so two stroke oil leaks into the crank case.