I have a 1993 chevy lumina euro that wont start. it cranks over but just wont fire. i drove it earlier in the day and didnt have any problems and it was driving fine. tried starting later that day and wont start. what could be wrong?
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snickle
ANSWERS: 1
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There are three main tests. You will need to test for Spark, Fuel and Compression, in that order. Spark: An easy way to test for spark is with an inexpensive spark tester. You use it by simply holding it next to a spark plug wire. If you see the neon lamp flashing while someone cranks the engine, then you have spark and should move on to checking for fuel. Fuel: Listen for the fuel pump running inside the gas tank. When you turn the key to run, you should easily hear the pump come on, run for a few seconds to build fuel pressure, then turn off. If you do not hear it, it could mean that the fuel pump or circuitry is bad. Compression: If you know that you have spark and fuel, the next step is to check for compression. For this, you will need a mechanic's grade compression tester that will screw into a spark plug hole. You will need to remove the spark plugs and use the compression tester to test the compression on each cylinder. If the compression is very low on all cylinders, that is a sure sign that the timing belt (or timing chain depending on the engine) has failed and will have to be replaced.
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