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  #21  
Old 12-11-2019, 01:15 PM
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Yea but still your pump will fail eventually. If it's sending metal out, it's done. So even after filters catch what's thrown back into tank via the bypass, you've only got a few hundred miles if that before pump grenades.

I'm trying to sell cp3 conversion kits(for DMAX) and FASS systems to customers with good running trucks. That's $5k spent there is alot better than the $11k they'll spend after the pump fails and contaminates the system
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  #22  
Old 12-11-2019, 01:33 PM
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Yea. I found the newer S&S video that gave some internal understanding to the "how it works" of the HPFP. I gathered the biggest point was not that the roller bearing of itself causes the problem, but a two fold event that requires the guide to turn 90* to the cam which causes the roller bearing to now be in a "not as designed" orientation. That is when the most severe HPFP failure issue can occur and happen where the bearing is eaten up by the cam.


I want to say the video gives credence to the air that becomes entrapped in fuel as the possible/principle source of creating the environment to cause the guide to rotate 90*.


I'm not trying to say one way or the other how these failures happen. Just giving info that I gathered from the video.


So with the combined factors of air entrapment and poor fuel lubricity these are key elements of the HPFP failures plaguing the industry. Yes, one can cause the issue just as much as the other, but both issues combined cause a huge issue to rise up much faster.



Does that sound about right?


I would never disagree adding filters, additional water removal, supporting pumps, and air removal are quite effective "insurance" to helping our fuel systems.
  #23  
Old 12-12-2019, 10:49 AM
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Could always upgrade to the Exergy improves stock CP4 pump or Exergy inlet metering valve depends what you want to spend.


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Old 02-24-2020, 01:20 PM
Bigdogdiesel Bigdogdiesel is offline
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I have a 2011 with 160k and a 2014 with 170k. I have been adding Wal-Mart 2 stroke oil in 85% of my fill ups since new. (Actually starting at 40k on the 11). 1/2 gallon on the 32 gallon tank (14) and 1/3 gallon on the 11 with the small tank 23 gallon or so. No fuel system or *** issues as of yet!
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Old 02-24-2020, 01:36 PM
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Cool. But that doesn't help with air or starvation if your lift pump was to go out.
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Old 02-24-2020, 09:47 PM
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From a beloved cp4 today on a Duramelt with 175k. Guy said he got a fuel filter warning, then it just shut down on him. He said he drained some water out of the filter afterwards, and then replaced the filter. Lol.
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  #27  
Old 02-25-2020, 06:36 AM
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Just drive it... I've seen where some people take exceptional care of a vehicle and it has many issues. Then I've seen a rancher who doesn't change oil for years much less fuel filters and it never stops running.

Yes preventative maintenance will help in most cases but in some instances things just fail, no matter how well they're taken care of. Take your chances and do what you feel is right.

IMO like most have already said put good fuel, drain water and drive it. Or you could always go buy a new one with a warranty.
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Old 02-25-2020, 07:47 AM
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Quote:
Originally Posted by ghohouston View Post
From a beloved cp4 today on a Duramelt with 175k. Guy said he got a fuel filter warning, then it just shut down on him. He said he drained some water out of the filter afterwards, and then replaced the filter. Lol.
Oh man I love seeing that. Money in the bank!
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Old 02-25-2020, 11:34 AM
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Two stroke oil in a cr lol
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  #30  
Old 02-27-2020, 07:28 PM
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Quote:
Originally Posted by CTC DEEZUL View Post
Oh man I love seeing that. Money in the bank!
Not quite. I work for a heavy equipment dealer as a field mechanic. This is a customer of ours and I was asked to go diagnose when they broke down on the highway. They towed it to a local G.M. dealer.
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