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Ok. For an engine to run, you need three things. Fuel, spark, and air. If you are on earth, you have the air, thing handled. Next, check for fuel. Take off the air cleaner, and push the throttle back. You should see fuel squirt into the venturi. Pump it a couple of times while looking. You will see/smell it. If not, check the fuel filter, then pump. Oh yeah, and make sure there is gas in it. If fuel is squirting, then it is probably a spark issue. Pull a wire, at the plug. Stick a screwdriver in it to make contact, and holding the PLASTIC end of the screwdriver, hold it near metal, and have someone spin the motor over. A blue arc will ensue, and you will hear a pop, sound. Assuming you are doing this because fuel is present, you probably won't get a spark here. Pull the distributor cap, and take a look around. Your ignition module, the thing that ntakes the place of the points, is probably to blame, but, check your cap, and rotor for carbon line, which are cracks. The module can be tested. I would do this next. If all is well here, I would check the starter selanoid. Make sure that there are wires attached to both small terminals. The outside one provides 12 volts to the coil, under cranking conditions. If a;ll is well here, I would seek a pro.

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Q: What causes a 400 Chevy small block to not start?
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