Nissan Repair: 1994 nissan pathfinder, timing belt tensioner, nissan pathfinder

Question
my nissan pathfinder was running fine...and then it started sounding like an ak47 out the exhaust...i stopped immediatealy and then when i tried to start is back, it wouldn't start....it would try to and sound like a gun going of out the muffler....what is it?

Answer
It sounds like the timing belt has jumpped a couple of teeth.  Take the inspection covers off the cam belts and look at the timing marks.  You might ahve to roll the engine over to top dead center if it is not close.  I would recommend a Nissan timing belt, tensioner pulley and water pump since you have it apart.