When it will not fire, check the fuel pump pressure to make sure it is within the manufacturer's specs. Also, check to see if there is spark to the plugs.
Better and easier yet. When it won't fire, see if it will start using starting fluid. If it does, then there is a fuel related issue. If it doesn't, then chances are you are not getting spark to the plugs.
Let me know what you find.
Thursday, September 5th, 2013 AT 5:17 PM