Most Engine Leak Test Complete Kit

In the MOST Racing "Tool Box" series of smart tools, here is the leak testing kit for 2-stroke engines from 50cc to 110cc . The various elements that compose it allow it to work for Derbi and AM6 engines (all types of cylinders), but also most scooters (MBK, Yamaha, Piaggio, etc.), as well as MBK 51 and Peugeot 103 mopeds. An almost obligatory operation when reassembling your engine, checking the leaks guarantees proper engine operation before installing the ignition and transmission components. How does it work? Very simply, by plugging the cylinder exhaust and the inlet to the intake pipe, then screwing the pressure gauge into the cylinder spark plug well. The intake manifold cap is equipped with a straight steel Schrader type valve (bicycle or car tires) which allows the engine to be pressurized (approximately 0.6 bar) using a bicycle pump. If the pressure gauge needle remains stable for a few minutes, your engine is well sealed. You can then move on to the next stage of assembly. If, on the contrary, the needle drops quickly, your assembly has a leak. Use soapy water and a brush to find the location of the leak (appearance of bubbles), either at the crankshaft oil seals, the cylinder base, or the intake manifold/reed valves/crankcase coupling.

In the series of smart tools MOST Racing "Tool Box", here is the leak-tightness checking kit for 2-stroke engines from 50cc to 110cc. The different elements that compose it, allow it to work for Derbi and AM6 engines (all types of cylinders), but also most scooters (MBK, Yamaha, Piaggio, etc.), as well as MBK 51 and Peugeot 103 mopeds. An almost obligatory operation when reassembling your engine, checking the leak-tightness guarantees that the engine is working properly before installing the ignition and transmission elements. How does it work? Very simply, by plugging the cylinder exhaust and the inlet to the intake pipe, then screwing the pressure gauge into the spark plug well of the cylinder. The intake pipe plug is equipped with a straight steel Schrader type valve (bicycle or car tires) which allows the engine to be pressurized (approximately 0.6 bar) using a bicycle pump. If the pressure gauge needle remains stable for a few minutes, your engine is well sealed. You can then move on to the next step of the assembly. If, on the contrary, the needle drops quickly, your assembly has a leak. Use soapy water and a brush to find the location of the leak (appearance of bubbles), either at the crankshaft oil seals, the cylinder base, or the intake pipe/valves/crankcase coupling.