littleboss
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- Jan 26, 2020
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What changes were made to the CP4 for 2020?
I heard ram just went to the CP4...
I disagree. I've had 1 cp4 failure due to fuel contamination. Bed was full of diesel 911 bottles. The rest had zero fuel contamination. CP4 can handle 4-5 minutes of air before it starts shredding apart. Think about every fuel filter change how much air you introduce.... Within 100k miles you've already sent many minutes of air through it just by changing fuel filters... IMO the #1 killer is air, whether it be from services or low fuel level tank slosh. it just can't handle that.... Funny, I've got cp3 trucks with over 600k on them, original pumps...every CP4 failure I've had so far has been 150k and under. So yea it's a manufacturer spec flaw....
I disagree. I've had 1 cp4 failure due to fuel contamination. Bed was full of diesel 911 bottles. The rest had zero fuel contamination. CP4 can handle 4-5 minutes of air before it starts shredding apart. Think about every fuel filter change how much air you introduce.... Within 100k miles you've already sent many minutes of air through it just by changing fuel filters... IMO the #1 killer is air, whether it be from services or low fuel level tank slosh. it just can't handle that.... Funny, I've got cp3 trucks with over 600k on them, original pumps...every CP4 failure I've had so far has been 150k and under. So yea it's a manufacturer spec flaw....
Do you guys see less failures on the 2015 and newer pumps. I had read that Bosch did some things with coatings and such to improve reliability.
This, I swear by the ford cetane booster, and sell it to every fuel system ive done. Just make sure the cardboard cap stays in the cap and doesnt end up in the tank...This is why I laugh at the guys on here that don't believe in fuel Additive... They just reply with "diesel" when asked about what Additive.... Our diesel is nowhere near where it needs to be for these pumps to survive.... Anywhere else in the world where their diesel is rich in lubricants from not strict refining, their **** is doing good. I'd bet if we all had more lube in the fuel the pumps may be more resistant to air, hoping the fuel would leave a lube layer on all parts.
Ive seen approximately the same amount of failures. Granted 80% of my failures have been customer induced. Either gas or def.Do you guys see less failures on the 2015 and newer pumps that I have read have better coatings on the internals etc? And do the disaster prevention kits actually protect the injectors?