Posted by The tractor vet on April 11, 2014 at 21:50:33 from (75.19.115.57):
In Reply to: 806 starting posted by IH owner on April 11, 2014 at 12:38:12:
Hard starting on a D361 can be caused BY (1) valve ression , this is cause by (1) due to length of time since the tractor has been over hauled and the head rebuilt . (2) improper head rebuild and valves set to deep in the head , cure to this is having the head rebuilt by someone that can read and understand just how far from the serface of the head that the valves should stand out .(3) cranking speed , is the started turning the correct RPM , are the batterys of the correct cranking amps. (4) injector cracking pressure and spray patter, injection pump cranking pressure . (5) cranking compression , is it making enough compression during starting . When and 806 is done wright they need NO EITHER SHE GO OR EITHER SHE BLOW . Either is the hardest thing on that engine as you can knock the top rings out of it and guess what she will start hard. A good 806 diesel will start way below 32 degrees with out either when all of the above are wright . My UGLY ratty old 806 with close to 10000 Hrs will start good down to freezing with put either and below that that is what the block heater is for . I have had old UGLY for 24 years and she was a hard starter when i got it a starter rebuild and new batterys solved 90 % a total rebuild will fix the rest when it needs it . And OH yea when was the last time the valves were run. ???
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