Being stranded at the side of the road when the engine fails is always a hassle, but things are made worse if you don’t know what’s wrong. But it’s also possible that something quite simple went wrong, which you can simply fix once you identify the problem.
Engines rarely stop abruptly unless there is a fuel or spark problem. Unexpected engine shutdowns are usually caused by a sudden ignition failure, though it’s more likely that the engine seized if it locks solidly. On the other hand, a delayed, sputtering stop is typically the result of a fuel issue; ignition issues that result in a similar level of poor performance are not likely to bring the engine to a complete stop right away. You should ensure that the engine components are of good quality and are intact or it can simply be a problem with a part of the engine.
By removing one of the leads from the plug and placing the metal end connector against the engine block, or by inserting a spark plug and placing that against the block, you can quickly check the functionality of the ignition system. If you are unable to accomplish either, put a piece of metal inside the cap and place it close to the engine. Ask a friend to start the engine; if the ignition system is functioning properly, blue sparks will leap the gap.
Disconnect the fuel pipe at the carburetor to examine the flow of fuel and observe if fuel gushes out when the pump is running. A mechanical pump requires turning the engine over on the starter, whereas an electric pump only requires getting someone to turn the ignition.
The fuel should flow strongly from both types of pumps, often at a rate of a few squirts per second. Mechanical gasoline pumps seldom malfunction without warning; more frequently, the fasteners slacken and the pump pulls slightly away from the engine, preventing the lever from fully extending and significantly reducing fuel flow. You might be able to boost flow if the pump is firmly mounted but fuel delivery is a problem by removing some of the gaskets or spacers between the components.
If their contacts deteriorate, electric pumps may stop functioning abruptly. Check by listening for the pump ticking when the ignition is on. Remove the fuel filler cap if there are no obvious issues but the automobile has been performing worse and worse until it has come to a complete stop. The vent is blocked if there is a sudden rush of air when you do this because the pump cannot suction against a significant vacuum. Driving with the cap off or periodically taking it off to let the tank breathe will bring you home.
These are few problems that usually drivers encounter. There are certain things that you can do by yourself to make the engine run again. But there are also certain things that can only be done by a professional mechanic. Even though you have fixed the car and engine works it’s always best to show your engine to a mechanic to find out what is actually wrong.