What causes a hard start on a cold start?
That often doesn’t cause problems on a cold start because most of that fuel has evaporated between the last shut down and the cold start. But leaking fuel can cause an extended crank and hard start when hot and then a rough idle for a while when the engine is warm.
What happens to the engine during a cold start?
Only during a cold start, the initial idling would be too low that the engine eventually stalls. On second startup attempt, idling goes up to usual level but goes down to below normal idling (i.e. less than 700 rpm) and engine may eventually stall. Usually takes about three attempts for a normal startup.
What causes low rough idle during cold start?
The valves may have some carbon build up on them that will cause low rough idle even stall cold. If you want to have this done, consider YourMechanic, as a certified technician from YourMechanic, can come to your home or office to diagnose the cold start and let you know what should be done.
What causes a hard start when the engine is warm?
Leaking fuel injectors cause fuel to leak into the combustion chamber. That often doesn’t cause problems on a cold start because most of that fuel has evaporated between the last shut down and the cold start. But leaking fuel can cause an extended crank and hard start when hot and then a rough idle for a while when the engine is warm.
The valves may have some carbon build up on them that will cause low rough idle even stall cold. If you want to have this done, consider YourMechanic, as a certified technician from YourMechanic, can come to your home or office to diagnose the cold start and let you know what should be done.
That often doesn’t cause problems on a cold start because most of that fuel has evaporated between the last shut down and the cold start. But leaking fuel can cause an extended crank and hard start when hot and then a rough idle for a while when the engine is warm.
What causes an engine to stall in cold weather?
Engine stalling problems can be hard to find and are often sensor or temperature related. Engine stalling is more likely to occur during cold weather or when starting a cold engine. So, this kind of engine stalling problem often means the engine is not getting enough fuel and/or too much air.
Leaking fuel injectors cause fuel to leak into the combustion chamber. That often doesn’t cause problems on a cold start because most of that fuel has evaporated between the last shut down and the cold start. But leaking fuel can cause an extended crank and hard start when hot and then a rough idle for a while when the engine is warm.