Shawn M Posted February 21, 2013 Share Posted February 21, 2013 My name is Shawn and I am new to this forum and to Macks. I just recently bought a new project, a 1954 B-61 with the Thermodyne engine in it. Just started tinkering with it a little and have a quick question, first of many I am sure. The truck smokes when its cold which is understandable, I am from Connecticut so it has been chilly lately, and after it warms up when I drive it the smoke goes away. But if I sit there and let it idle for a minute or two after its warmed up it starts to smoke again, smells like unburned fuel, so its as if the injector pump is giving it too much fuel just when left to sit to idle for a few minutes. I do not really know what is causing this, possibly a plunger sticking in the pump. I am not too sure. Also, I took it for the first actual drive down the road yesterday and did not seem to smoke at all really even when pulling a fairly steep hill. I don't know if this could help explain the problem more. I don't know much about these trucks yet and just trying to learn all that I can. Thanks for your help. And I know you guys like pictures, I'll be adding them soon. Thanks, Shawn. Quote Link to comment Share on other sites More sharing options...
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