You need to check for spark and fuel. When you turn the key in the on position you should be able to hear the fuel pump turn on for a few seconds. You will need to verify that and for the spark if you pull a plug wire and stick a screwdriver into it and hold the shaft of the screwdriver next to ground a spark should jump to ground if you have spark.
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Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.