Why won't my engine start?
Thursday, 22 November 2012
For some reason your engine just will not start. Well, there are a couple of things that could be the cause, these should be the first points you try and diagnose
When you start a car you will hear the "tick" if you don't hear this, it is usually a very good indicator that your starter is not working. The next step is to check what the direct reason is, it could be the starter itself or it could even be componants like the starter wires, relay or the battery. You can also check the battery terminals to see if they are corroded or just loose.
The “check engine” light should also come on when you start your car. The check engine light is actually the indication to the operator that the engines computer is powered, if you do not see the light come on means that the power has not yet reached the engines computer. Check for broken wires or a faulty communication/connection.
Once the ignition is turned on, you should hear a light buzzing sound from the fuel pump which actually emanates from the fuel tank area. This happens when the ignition switch is turned on, the engine computer runs the fuel pump for a few seconds to pump initial fuel pressure. If there is no sound there might be something wrong with the fuel pump itself, or it may indicate a problem with the electrical circuit. You should not try and check this yourself, a professional should diagnose this for you.
If you have left your vehicles power or lights on overnight the battery can becomes flat. A discharged battery is one of the most common and most probable reasons why a vehicle will not start. If this happens you will hear is a clicking noise when attempting to start the car. To check if your battery is discharged you should turn the ignition on while the engine is off, then switch your windscreen wipers on. If the wipers move slower than usual, the battery is probably discharged.