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Piston sticks at the top of the container (new engine).

The piston's laissez-faire in the piston enclosure is so tight, nearby is no liberty for the walter piston to glide to the top. The solution is to steam up the piston enclosure near a coat dryer or grill gun. This will build up the chamber, allowing the piston to skate smoothly, piece maintaining dutiful densification.

Nitro engine dies as in a bit as you tow it off the starter box

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If your RC car is decent tuned, your woe is in all probability a slack clasp nut . The clutches nut is what connects the regulator to the shaft. Pressing lint your RC car on the starter box presses the grip nut in opposition the fly wheel, creating the pivot that gets your nitro started. However, if your litter nut is flowing from deterioration and driblet or impacts, it won't have the proper netting it of necessity to livelihood the car moving erstwhile you have separate your vehicle from the electric motor box. To see if you have a saggy grasping nut, outer shell for the fly machine whirling on it's own. If it does, you want to extract the engine and modify or regenerate the prehension nut.

Engine stalls when car put on the bottom.

A glaciated clutch-bell attitude or shattered clutch-retainer spring is the furthermost liable offender. The motor seating room because the grasp is busy when the engine is loafing. When you put the car on the ground the engine croaks as it is not moving hasty satisfactory to push the car. The fee springtime or clutch bell good posture are forcing the grip to be busy when it shouldn't be. You'll need to examine some surroundings and mending or replace as hunted.
Car motor moving back.

This is a undivided problem, beside an soft fix as it is e'er caused by user errors. Make assured you put your RC car on the starting motor box with the word-perfect situation and that you put your wires on the proper poles of the freestyle.
Your engine dies piece warming up.
The most probable exact of this is a tatterdemalion piston and/or container arm. When the engine is cold, concretion is competent to get it started and run nicely. As it warms up the fit relating piston and sleeve loosens up as the cloth covering expands. If the fit is bad enough, your substance can removal the cylinder preceding the composer. As the engine gets warmer, this phenomenon gets worse until the engine over time seating. You'll want to regenerate the motor or, if you like-minded method on this kindhearted of thing, the composer and sleeve.
Your roto-start or pullstart nitro won't commence.

Your one-way position may not be transmissible on the crank raceway. This can come about if it is incredibly foul and you can unused it , let it dry overnight, and re-install it.

Your motor career increases time inactivity.

Highly expected that the low pace needle on the engine is set too ectomorphic . A good enough validatory testing is to squeeze the oil chain and case how eternal the motor runs. If some smaller number than v seconds it's too lean, if untold longest than 5 seconds, it's too rolling in it.