If you get desperate I have a cp4 with around 70k on it, pay for shipping and it's yours. They didn't want it for a core when I put the cp3 in.
first diesel and i'm hosed - cp4 out
- Thread starter jbmotorsports
- Start date
if the pump is from a 2013 or later with lower miles, i wouldnt worry about the CP4. its the pre 2013 stuff you have to worry about.
Glad you got lucky ("how?" is something else entirely), but 99% of the time the whole system is trashed.
Exactly, I havent heard of a single failure on a 14 or newer. Bosch redesigned the metering valve (coated it), this was the problem. It would start to come apart slowly and contaminate the entire fuel system with tiny metal shavings from said valve...
The VAST majority of the time it happens bc of bad fuel, water in fuel, but running them below desired rp alot can do it too...
No they don't, I clean the rails and lines in my ultrasonic machine .....I've fixed many cp4 failures and never replaced them...most high end machine shops have these machines
I got lucky with mine, and I was just starting to show evidence of metal on the FPR... Just wouldn't build fuel pressure after checking the FPR... If possible, check/test your injectors.
But do yourself a favor, and convert to a CP3. There's been 2014+ CP4's shitting the bed up here. Possibly due to more extreme temperature swings causing more condensation in the fuel.
Also, install a lift pump. Your fuel tank is likely contaminated with metal.
Mine died on Thursday, lol. Even without proper tuning, the CP3 is running circles around my CP4.
I was 11 days out of warranty and 300km out of extended warranty, lol.
But do yourself a favor, and convert to a CP3. There's been 2014+ CP4's shitting the bed up here. Possibly due to more extreme temperature swings causing more condensation in the fuel.
Also, install a lift pump. Your fuel tank is likely contaminated with metal.
Mine died on Thursday, lol. Even without proper tuning, the CP3 is running circles around my CP4.
I was 11 days out of warranty and 300km out of extended warranty, lol.
so what is the cheapest I am going to get out converting to cp3? need some guidance here. thanks
is it true that if I just buy a post 14 cp4 I should be as good as a cp3 and thus not need the conversion?
yes, CP3's die. its not like they are bullet proof. the newer CP4's follow along the same path as them
thank you. do you happen to know if it was a different part number? Also, any leads on where to get one? I am a big fan of not putting extra stuff on if not needed. From my limited reading it sounds like the re-designed cp4 fixed the flaws.