Help with DD

[kwiese]

I have a 1948 DD. The crawler will not make any power. I've had the injection pump and govenor overhauled. Crawler will start and run, but has a miss in it. When placed under a load ( will not even pull itself thru a turn) the crawler bogs down and will die. Any suggestions or advice.

Thanks

[Robert Barbour]

Well if it starts and runs and the injector pump is good. Then I would think it is lack of fuel or air. So I would check for dirty fuel lines and filters and the oil bath air filter.   Will the engine rev up to rated speed when not under load?

[walter hudson]

does the engine fuel smoke under a load ?white or black,if not you may have a fuel supply problem,if it white smokes you may have low compression or the pump timing is off,also did you have the injectors checked if there is a miss all of the time you could have a bad injector or intake /exhaust valve problems,you might try opening the injector lines one at a time and see if you are getting fuel to all cyl. and this might help locate a missing cyl. like pulling a spark plug wire off a gas engine.
                         good luck  walter