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Problems with ultra low sulfur diesel
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Posted by NC wayne on February 28, 2007 at 17:17:09 from (152.163.101.6):
I saw a post from earlier talking about the new ultra low sulfer diesel fuel and any problems associated with it. I had a customer call today telling me the engine on his machine had just quit. It's a 4BTA Cummins driving an air compressor unit on a rock drill and it runs wide open most of the time. Well Dad ran down to check it since I was tied up on another job and called to tell me it that based on what he had found the injection pump was the only thing it could be. It has a rotary style injector pump that I just put on, new, from Cummins, about 5 months ago, so I really didn't know what to think when he told me this. Dad stopped by the fuel shop that normally does all out pump work to ask them about what had happened. They told him that their already starting to see problems in the older pumps because of the lack of lubricity in the new fuel due to the lower sulfur content. In the case of this pump the plungers stick which results in exactly what the customer said happened, the engine shuts down and won't restart. Dad also started having problems with the 3116 CAT in his truck a few months back, about the time the fuel shop said they started seeing an increase in their business, when they started really getting the fuel out around here. Dad's been doing business with these guys for well over 20 years and about half that for me, and they've never steered us wrong before. That said, their suggestion was if you want to keep your older engine running on the new fuel you'd better start using an additive or your headed for a problem with the fuel system.
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