Posted by Janicholson on June 11, 2011 at 06:35:13 from (67.72.98.45):
In Reply to: potential 650 posted by red bearing on June 11, 2011 at 05:12:11:
If there is a misfire in gas mode, the engine could have valve issues. If when switched to diesel, it just does nothing but slow down and no attempts to run happen it could be a stuck injection plunger, or other injection related issue. A gas side compression check in the neighborhood of 85 to 120 psi that is fairly even across the cylinders shows that it is probably not a disaster internally. Water in the oil is bad, check the drain plug by loosening it till a tiny bit of fluid comes out. Oil good/coolant bad. Cracked heads and poor maintenance on injector pumps and fuel systems are the most problematic issues. They are reliable engines, and economical. They are costly to repair due to expensive parts. Warming on gas side for two minutes gets them happy when starting the diesel run mode. Cooling down on diesel for 5 minutes after it is worked in the field is very important for avoiding a cracked head. (my opinion is that it should not be switched to gas operation for cool down, as it cools less than idle diesel, and opens the starting valves heating them for no reason. If it produces no white smoke when switching to diesel mode, it is not getting fuel. Jim
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