Join Date: Jun 2008
Location: Brampton, Ontario, Canada
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GENTLEMEN, first of all, what is a "gpr"? I'm assuming you mean a GLOW PLUG RELAY? In my limited experience with 6.0L engines, glow plugs or the entire glow plug system for that matter has NEVER been the cause of a no-start.
Goose350, you summed it up pretty good when you stated, "Now im thinking it is something with the fuel system."
Well, there are a few things that will cause it not to get fuel. Firstly, lack of sufficient ICP (Injector Control Pressure) WILL cause the PCM not to command the injectors to fire. Usually, this problem causes a no-start/hard-start when the engine is warm. Secondly, a bad FICM (Fuel Injector Control Module) will definitely cause the engine to either run rough, or not start PERIOD. Thirdly, if either FICM SYNC or SYNC (or both) fails to read "yes" when the engine is cranked, the PCM won't command the injectors to fire because it doesn't know WHEN to fire. Lastly, if the fuel pump fails to deliver 56 psi of fuel to the secondary fuel filter housing when the engine is cranked over, your engine will eventually starve for fuel.
But without the use of a scan tool you are just pissing in the dark. The first step is to have it scanned to see what's missing from what I've mentioned above.
Ford Diesel/Senior/Master Tech who placed 2nd overall in Ontario on the Fix-It-Right-First-Visit score for 2010
....who works at a dealership that now employs SOME half decent looking female employees since they overhauled most of the administrative staff
....but STILL loves hot women with big boobies
....and STILL hates working on E-Series with 6.0L