drove couple hours turned off, returned bout 2 hours later wouldnt run cranked fine, chked fuel,sprk,compression,a few other things,sprayed carb spray bypassed mas sensor ran fine while i was feeding it spray soon as i quit it died,changed plugs chked all fuses an relays,no interia cutoff switch,when i first chked plugs , looked fouled, everything ran good before i did any thing except sprayed the carb cleaner while cranking,then i started going thru the motions , chk this an tha changed plugs an so forth,, secruity light acting normal no codes apparent,, any ideas,,

Did you check fuel pressure? Should be between 52-59 psi.

yes chked fule pressure , roughly 56 during cranking,3.1 liter,chked relays all fine, chked the fule pump soundes normal , weird tho not sure but, during cranking pump wouldnt kik on but when u turn the motror off it sounds as if the pump is pressurizing again,,,baffled,cuz runs smooth with spray,no knock or mis,soon as u quit spraying it shuts down.

The fuel pump is supposed to run for another second or two after the engine is turned off. It basically keeps the system "primed".

If you have spark, the next thing Iwould check is injector pulse