[cooperino]

Originally Posted by caddytech

thanks for all the input will check these items

Unless you diagnose diesel fuel systems often or even if you do and one stumps you a little. Revert to the old divide and conquer method. You can connect a line directly from lift pump to a hose going to a can of fuel. Start the unit and get all the air bleed out of system. Shut off the engine and let sit for 20 min. Then see how it starts. If it start easily then you know the issue is before the lift pump. If it does the same thing then its after the lift pump. If the problem still exists I would try starting with intake disconnected to make sure its not an air delivery issue. Currently, do you get any abnormal smoke from the exhaust?