Carburettor Engines car will not idle or stalls easily.
Problems with Carburettors when the Engine will not idle or stalls easily.
- This is usually simply a matter of adjusting the throttle stop to ease the idling speed so that the engine no longer stalls. this assumes that the idling mixture strength is correct, which may not be the case so adjust if needed.
- Check for blocked or worn parts around the carb, also obstructions which may temporally be affecting the throttle linkage.
- The idling mixture may be too rich and a weak mixture will make it impossible to obtain a slow idle and may be due to incorrect adjustment of an idling mixture screw.
- Leaks at the induction manifold gasket will allow air to be drawn in and this will result in a fast-idling speed.
- Worn inlet valve guides also have a similar effect as Leaks at the induction.
- A fuel pump delivering insufficient fuel due to a fault in the pump operation or to choked filters result in a weak mixture and this will increase the idling speed.
- There may an obstruction inside the idling jets in carbs such as a weber carburettor but this fault does not apply to SU or Stromberg carburettors.
- Also, the sparking plug gaps may need attention or are worn.