The RC Car Guide - RC Tech

engine.Raising idle by 1/4 turn will help prevent engine from stalling. This isthe idle screw and not the low-end needle. Next you would need tocheck on the engine temperature. An engine temperature up to 150degrees is required. A rich fuel mixture is required. In order to achievethis richen the top end by a full turn. This should be done by holdingthe carburetor wide open and richening should continue till enginenearly stalls. This flushes out dirt, residue, or after-run oil from thecarburetor and the engine as well.After this, tuning of the bottom end is required. It is essential to getacquainted to the sounds and humming of the engine in order to tuneyour engine to it's best. Listening to the idle is the first step towardtuning the bottom end. If the idle slows and engine stalls then thebottom-end needle needs to be adjusted. But if the idle speeds up thenbottom needle needs to be richened out. The engine needle should beset to idle for at least one minute before the engine starts to stall.Once the idle is consistent for one minute then the idle screw shouldbe lowered as much as possible until engine stalls. Then the idle screwshould be opened up to the setting of one-eighth of a turn. Engineshould be able to idle at least forty-five seconds consistently.After the bottom end is tuned in the top end needs to be tuned. Tobegin tuning the top end full throttle needs to be opened for at leasttwo to three seconds and then the same should be returned to idleposition. The top end needle should be leaned out after listening to theengine until a nice clean sound is heard. Then the carburetor needs tobe opened to full throttle for two to three seconds and closed for thesame amount of period. This should be repeated one or two times.This should make the engine rev nice and clean after the repetitions.If the engine hesitates after this it is an indicative of a too leanmixture. In order to resolve this the top needle needs to be richened.A proper tuning of the engine should resolve the problem of stalling ofthe engine or if the engine is giving shorter run times. If the problemspersist then trouble shooting of the fuel system may be required. Butthe best shot would be to get an expert’s opinion.Other Problems With Your Nitro CarIf you nitro car engine runs fine but does not move that meanssomething in the drive train has come loose. The first option would beto first check the rear wheels. Insure that on the rear wheels that the