The absolute best way to test the fuel pump is with a fuel pressure gauge, using any other method is not as accurate. No Start 2: Checking For FuelĬhecking that the fuel pump is delivering fuel to the fuel injectors is not that hard on your Nissan (since you're able to tap into the rubber fuel pressure hose that connects to the fuel injector rail with a fuel pressure gauge and its appropriate adapter).Ī bad fuel pump will cause your Nissan to crank but not start since the fuel pump is the one responsible for supplying fuel to the fuel injectors. It's almost impossible for all 6 COP ignition coils to fail at the exact same time, so the most likely cause for this no-spark condition is a bad crankshaft position sensor. This test result tells you without a doubt that the no-start condition of your Nissan is due to a malfunction in the ignition system. The following tutorial will give you some specific testing tips: Power Transistor Test & Ignition Coil Test 3.3L Nissan (1996-2004) (at: ).ĬASE 3: Spark was NOT present in all of the cylinders (COP IGNITION COIL TYPE).If no spark is firing from the ignition coil, then the next step is to verify that the ignition control (igniter) is activating it.
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