Posted by Owen Aaland on April 12, 2008 at 10:38:08 from (65.165.246.73):
In Reply to: 706 diesel questions posted by Brandon D'Avis on April 11, 2008 at 19:27:49:
Excess fuel on top of the pistons will not cause the engine to run faster. The fuel need to be atomized by injectors before it will burn. This happens in the precombustion chambers, not in the cylinders.You may get more smoke but it is highly unlikely that the speed will change much. Check the injection pump linkage to make sure the throttle arm on the pump is returning against the low idle speed adjustment screw. It also need to travel to the high idle speed stop.
How far did you go in rebuilding your engine. Was the cylinder head reconditioned so that the valve recession is at the minimum? To make them start easier the closet you stick with the original spec of .003 recession from the head surface the better they will start. If all that was done was to resurface the seats and valve faces then it will probably never start very well.
Do you get smoke while cranking? If not, were the injectors reconditioned? Resetting the injector opening pressure can cause problems with a worn pump.
At 70 degrees or with a warm engine,holding the glow plugs on for 30 seconds may be enough. As the temperatures drop, you need to energize the glow plugs for a longer time. If it gets below freezing you may have to have tthem on for a couple of minutes to get it to start.
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