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There can be so many problems with the engines. Here are some ofthe common problems discussed.
When the engine is very cool and stops after a short run. Whenthe engine is very cool is starts immediately but after some turns atmedium speed, if you put on the brakes or try to run at very slowspeed it stops. It may be because it might not be pulling enough gas.This might be an indication of a worn piston sleeve. This may give youa good engine start for about a minute of 45 seconds but stops shortafter a few turns. One check you can do, is to turn the flywheel byhand to check how much compression is left. Do this after it is warmedup and stalling. You should feel considerable resistance as the pistonapproaches TDC (Top Dead Center). If it can be turned with a fingerand runs only for a few seconds and starts only when it is cooled thensurely piston or the sleeve is to be blamed.
Another reason can be that it might not be sucking enough gas as ithas no compression. The engine has to be running and sucking in airto suck the fuel through the carburetor. This is not being done becausethe compression is down.
The most important aspect is to listen to your engine. Most peopleespecially those driving Nitro models, fall into watching the smoke thatcomes from the exhaust and tuning the engines. But problems withconsistent performance may arise if there is a change in type of fuel.Different fuel types may give into different range of engineperformances. Further, it is not suitable to expect the engines toperform race after race and in different conditions and every problemto be solved just by taking a look at the smoke. It is important to learnto know how the engine sounds and responds to the throttle input.
Other than those there can be many instances when the engine stallsor simply it would not start. If the engine is cutting out on fast turnsthen its time to give a check to the fuel system of the engine. Otherproblems that may arise due to fuel system can be that engine mightbe running very badly. You will need to check out if the mixture is toolean or too rich, check head pressure, fuel lines etc and all thingsrelated to fuel system. A thorough investigation and fixing of the abovecan provide you with better engine performance.
1/10th Nitro
