truck feels like it is missing on a cylinder or two - Ford Powerstroke Diesel Forum
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Old 03-12-2012, 12:49 PM Rookie

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truck feels like it is missing on a cylinder or two

Hello, My 6.0 diesel F250 started acting like it was missing on a cylinder or two when I was driving @ about 55mph. I started by changing my fuel filters. All went well until I changed the smaller one under the hood. When I took the old one out and looked inside the bowl there was an O-ring about 1/2-3/4 inch diameter sitting free at the bottom of the fuel bowl. I looked at the filter-it came w/a larger 0-ring to put around the plastic threaded top which I lubed w/oil and put on the cap but I could find no place for the smaller o-ring that was sitting in the bowl-it was there when I took off the old filter. I took it out and placed the new filter in place and put the cap on. Truck started my truck up and it ran fine until about 55mph when it started shaking again like it was missing. Any help would be appreciated. Thanks Rob
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Old 03-12-2012, 03:49 PM
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You are going to need to check for codes so we can help. Do you have a monitor like edge CTS? If not, you need to invest in something soon. My truck started doing the same thing at 55-60, took it to a mechanic and got cylinder contribution and balance test, #4 injector is bad. Luckily the mechanic only charged me $40. I have not changed the injector yet, trying to save money. The org will help, just need more info.
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