NDanecker
Active Member
- Joined
- Jan 9, 2021
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Its not so much about clean diesel but pure diesel. Water containments play a huge part also. With this pump design, assuming 26k rail pressure and pump plunger diameter of 0.25" diameter the roller can see ~ 5,000 lbs of force spread over an extremely small area. Is it exceeding its tensile strength? Guessing so since we are seeing a higher than normal failure rate. If the roller assembly does rotate in its bore as the video suggests it can do then it will def fail. Remember its diesel fluid and not oil which has better lubricating properties that help reduce friction, heat build up, etc.Do you believe the fuel contaminants are some how getting "around" the filtration? It's being filtered down to 3 microns (at least 4th gens are) so that's pretty small (human hair is ~70 microns).
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EDIT: In addition, if you run the new pump without 100% full of diesel it has a much higher rate of failure as it requires diesel for lubrication. Are people making sure they prime the fuel system after a filter change before starting the motor? I remember when I changed my filter on my CP3 trucks I just cranked it until it started which you could get away with on the old CP3 pump. I don't believe that is the case with the new pump.
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