Bought this Nissan pathfinder at auction, it crank but will not start, check the fuel pressure, no pressure thought might be fuel pump , change the fuel pump still no pressure. Any ideal what might be the problem
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Spray some starting fluid into the intake and see if it will catch for a second. If it fires for a moment, then dies, you're not getting fuel. I would have checked the fuel pump relay before replacing the fuel pump. You didn't say what year your Nissan is but I'm going to assume it's a 1996 or later version. I'd read the codes in the computer to see if there are any stored. I'd do this before throwing more parts at it. I can think of 6 or 7 things that are simple but will keep it from running.  
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