Bosch CP4 pump
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Mountain Pass
Joined: Jul 2002
Posts: 196
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From: Madison USA
I couldn't care less about the lawsuit. I'm interested in why there's a dearth of info and posts about these pump failures. Is it happening? What are signs of the failure, can it be detected somehow prior to actual failure? Are there techniques to prevent the failure?
Super Moderator
Joined: Dec 2011
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Why are you banging your head at the name?
forthelawyers.com ... while probably more accurate, just doesn't have quite the same ring to it.
Anyway, where there is smoke, there is fire. And the Bosch CP4 pump has been a flame for quite a while.
What I want to know is, do the same issues that the CP4 is famous for, also manifest themselves in the revised CP4.2?
forthelawyers.com ... while probably more accurate, just doesn't have quite the same ring to it.
Anyway, where there is smoke, there is fire. And the Bosch CP4 pump has been a flame for quite a while.
What I want to know is, do the same issues that the CP4 is famous for, also manifest themselves in the revised CP4.2?
Posting Guru
Joined: Aug 2007
Posts: 1,902
Likes: 26
From: BA, OK
I couldn't care less about the lawsuit. I'm interested in why there's a dearth of info and posts about these pump failures. Is it happening? What are signs of the failure, can it be detected somehow prior to actual failure? Are there techniques to prevent the failure?
Mountain Pass
Joined: Jun 2007
Posts: 131
Likes: 3
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Super Moderator
Joined: Dec 2011
Posts: 13,337
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If by "them" you mean the people behind "forthepeople", the answer is no, I do not know them... anymore than I know why you are banging your head against a wall.
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More Turbo
Joined: Aug 2005
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ummmm... you political types need to take a pill and go someplace else....
Can we get some info on the CP4 fuel pumps? Do we have the same exposure as the GM CP4 pumps? Are ours better somehow? Do we have a newer model?
oh - if you are still worried about where to find info (without our legal-bengals getting bothered), check out Truck Trend - they just posted the announcement of the class action suit agains GM.
Can we get some info on the CP4 fuel pumps? Do we have the same exposure as the GM CP4 pumps? Are ours better somehow? Do we have a newer model?
oh - if you are still worried about where to find info (without our legal-bengals getting bothered), check out Truck Trend - they just posted the announcement of the class action suit agains GM.
Posting Guru
Joined: Aug 2007
Posts: 1,902
Likes: 26
From: BA, OK
https://www.carcomplaints.com/news/2...-lawsuit.shtml
I would say so, we use the same ULSD fuel.
Ford uses a lift pump, I've heard GM does not.
It's my understanding the 15+ trucks use the CP4.2 which runs a higher pressure than the 11-14's and also has a special coating on the rollers. Not sure if the 17+'s got a newer revision or not.
I would say so, we use the same ULSD fuel.
Ford uses a lift pump, I've heard GM does not.
It's my understanding the 15+ trucks use the CP4.2 which runs a higher pressure than the 11-14's and also has a special coating on the rollers. Not sure if the 17+'s got a newer revision or not.
Tuned
Joined: Feb 2019
Posts: 279
Likes: 14
The CP4 issue is a real problem. I had studied it in length as I have direct experience with one puking on my last Duramax. The long a skinny is it doesn't matter if you have a lift pump or not as the lack of lubricity in U.S. diesel is what causes them to wear out and blow which throws metal shavings in into the entire fuel system. Granted a lift pump will keep fuel pressure in the rails which will ensure your pup does not go dry, but these CP4's still go without warning. Bosch designed these around Euro diesel standards and the American big 3 know they are any issue.
Posting Guru
Joined: Aug 2007
Posts: 1,902
Likes: 26
From: BA, OK
There are tons of threads in the 6.7 L diesel forum regarding additives
Laughing Gas
Joined: Oct 2018
Posts: 767
Likes: 78
From: NC
Thanks, I'll hop over there and take a look.
