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97 psd hard start rough idle till warmed up

2K views 12 replies 5 participants last post by  CLUTCH 
#1 ·
Working on a 97 psd really hard start after sitting for a day or two and runs rough until engine reaches operating temp but after it warms up it runs great. Same issue if left inside heated shop. I've already checked the obvious gps, gpr, valve cover harness etc. Any suggestions would be greatly appreciated
 
#7 ·
Fuel pressure regulator screen is inside the fuel bowl....top drivers side.Remove the (17mm or 19mm)bolt on the side of the fuel bowl at that location.Slide the spring out and theres two pieces of plastic with o-rings ...pull that out and clean the screen off,reassemble.nasautomotive sells a rebuild kit for the fuel system,it comes with 9 or 10 new o-rings about $15.While your in there clean the fuel bolw out...that centre stand is reverse thread.All that crap under the fuel heater is on its way to the fpr screen.Greg
 
#8 ·
is the fuel pressure regulator pre fuel filter?

is your oil getting old, that could be the problem if its cold and too dirty
 
#9 ·
I cleaned the fpr screen and fuel pressure at the fuel bowl is within specs the oil pressure is also showing good on my scanner. The oil has been changed within the last 500 miles so i doubt that is the problem. What else should i be looking for? Thanks for all your suggestions so far i just wish this engine wasn't in a damn van lol
 
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