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Crawlers, Dozers, Loaders & Backhoes Discussion Forum

running a diesel

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tyler mostia

04-09-2007 09:04:16




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we have a 1964 ih 3444 loader backhoe with a ih bd-154 diesel in it. my grandad who is the one that usually operates it, runs it with a low throttle, almost ideling around. when i operate it i try to use more throttle because that is what i have been told by others. this is our first diesel and i"m not sure we are running it right. when i rev it up hot black things(probably carbon) come out of the exhaust, not just a little there is quite a bit that comes out and lands on you.

should we be running it different?

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Brian In iowa

04-10-2007 08:54:19




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 Re: running a diesel in reply to tyler mostia, 04-09-2007 09:04:16  
yes that is correct u need to every so offte just act has if its p$$$ u off and rev the p$$$ out of it and let it hit the goviner an couple of times and it should be fine for u.if its sitting and idleing no lower than 1200 or 900 prm at the most.



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Jiles

04-09-2007 18:37:30




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 Re: running a diesel in reply to tyler mostia, 04-09-2007 09:04:16  
Most machine manuals state that the R.P.M. "drop" is the most critical aspect of operation. I run my machines by this rule and have never had any problems. I don't like to run at full throttle when I am doing light work. Heavy work-Full throttle and if the engine is straining go to lower gear or lighten up.



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Bob Blue

04-09-2007 13:43:43




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 Re: running a diesel in reply to tyler mostia, 04-09-2007 09:04:16  
Let it warm up good then take it out and run it up to 60 to 80% power, dig. some holes, push some dirt, get the governor to work. The black soot is carbon that has built up in the manifolds and exhaust. The worst that can happen at continual low RPM is carbon build between an exhaust valve and seat then there goes compression on a clyinder. You will have black smoke at throttle up because the governor will over throttle on engine wind up before it settles down. An engine likes to see 180 to 190 degree water temperature for efficient combustion. Bob

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Uncle

04-09-2007 09:58:59




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 Re: running a diesel in reply to tyler mostia, 04-09-2007 09:04:16  
You need to have the rpm"s up and load the engine.
These are thermal machines and need heat to run right and stay clean. By never really loading the engine you are wearing it out. I was told that every now and then you need to operate it like your mad or stole it.



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tyler mostia

04-11-2007 12:02:51




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 Re: running a diesel in reply to Uncle, 04-09-2007 09:58:59  
great thanks for the help, i was going to start running it higher but id thought i would ask first.



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