m1009 will not restart after an hour?

[ASTFU]

my 1009 after an initial start and drive to work (15 min warm up 15 min drive) when i shut it off, if i go to start it again an hour later it just turns over ,if iI wait longer say 2 hrs it will start right up. I carry a can of wd40 with me but it is kind of a pain to spray and start at the same time.new filters have been installed no change. any help would be great Thanks Thom.

 

[mangus580]

This is generally a sign of a tired injection pump.

 

[ASTFU]

I was thinking that. it only has 38000 miles.

 

[CCATLETT1984]

try adding a few quarts of ATF before you fill up next time, the atf will thicken the fuel slightly, if the problem gets better than its a sure sign of a rebuild being in the very near future.

 

[appnut1]

One problem can be cranking RPM it must be at least 200 RPM and the other issue can be caused by the thermal limiting switch keeping the glow plugs off at too high of a temp. Should be a two wire sensor screwed into the rear coolant passage on the head. try jumping the connection and see what happens

 

[jdcucv]

I have same problem with my CUCV but it happens after engine is hot or warm. have not found answer yet. Told it is IP failing.

 

[tsmall07]

I've heard that this sort of behavior could be an air leak in the fuel line somewhere.

 

[ken]

Try taking a gallon of cool water and pour it on the IP. The water will cool it and run down the back of the engine. If it fires up then the IP will soon throw in the towel.

 

[CCATLETT1984]

Ken, thats really a test for the 6.5L engines with the electronic fuel control (FSD). our injector pumps arent affected by this.