There are several reasons why a 97 Chevy Blazer will not start. Some problems you can fix right away, and others may require help from a mechanic.
Check your Chevy Blazer's battery for signs of corrosion if you only hear clicking noises when you turn the key. If the interior lights go dim when you try to start it, then you may have a dead battery and need a jump start from another car using jumper cables.
Check to be certain the Blazer is in park or neutral, if you only hear a clicking noise when you turn the key and the interior lights do not go dim. Be certain you are depressing the clutch pedal to the floor if you have a standard transmission. This could also be an indication of a problem with the ignition switch or starter motor.
Check the Chevy Blazer's spark plugs if you hear the engine cranking when you turn the key, but the car doesn't start. Do this by holding a spark tester next to the spark plug's wire while someone else turns the ignition key. If there is no spark, it could be a problem with the spark plugs.
Listen for the fuel pump to engage when you turn the key in the ignition of your Blazer. If you don't hear it come on and run, that could indicate a problem with the fuel pump or the pump's circuitry.
Check for compression in your Blazer by screwing a compression tester into a spark plug hole. If the compression registers low, this could indicate a problem with the timing belt.
Remove the distributor cap on your Blazer. Look inside the cap for signs of moisture. If you see moisture, spray some mechanic's solvent that is used to clean car parts onto it. Dry it off with a clean rag.
Look at your gas gauge to be certain you have enough gas. It may seem like common sense, but it is often the common sense procedures that we forget to perform.
