quote="heavyhaulerss"]
pr ts replaced were some sort of fuel check just behind fuel pump.
maybe it was behind the cylinder head ?
thought by mechanic that it was losing prime & that would fix it. the suction line. because it was thought the it was sucking air.. ????? dint know about running or cranking fuel pressure. not sure if anyone done that. if so i heard of no results from such a test.
fuel pressure and restriction are very basic engine performance checks and were likely done and not mentioned ...... ?
resricted fue fitting drilled ? no idea.
never mind
no fuel pump leak anywhere externally. dint know where the oil cooler is or what it looks like.
right beneath the turbo, passenger side
sorry
ops: dint know about peak boost either. i have overhead run every 90 - 100,000 miles.
that's about twice as often as i would recommend ... assuming longhaul miles
no matter if overhead just ran yesterday or 8 months ago. same cold start up prob reguardless. but the last was done 86,000mi ago. normaly engine runs o.k. get 5.5-6.5 mpg depending on load, wind, hills, e.t.c. when the truck is running & you are 20 ft away you could not tell it is running by looking at exauhst stack. virtualy no smoke. sorry for so much lack of knowledge on my past repairs & ignorance on my truck engine components[/quote
you need to verify that your fuel system is sealed tight, and that it's making sufficient pressure and flow
does the engine always crank fast?