Hi , having some problems with my 500Hp Series 60 DDEC4 2001

Hello ,
My problems are Poor MPG , black smoke on hard acceleration and it look like is working in 5 cylinder in winter under load when the engine is cold.
I also have blue smoke on cold weather at idle (900Rpm) ,i think it came after my overhaul but I am not sure since iI only start to see the blue smoke six month later with the beginning of winter .
I have the EGT's a bit in the up side .
The Fuel pressure at idle ( 600rpm ) is 0 to 3 psi at the pump exit , at 2000 rpm is 60 Psi on parked truck and at 1400rpm is 35 Psi going uphill pedal to floor (under load) .
And another problem is that after going a long way downhill and then I accelerate to go uphill it will have low power for a 15-25 seconds period ,in this period the boost will not rise more than 18 -20 psi and then it will gradually go up to 28 Psi after 15-25 sec. (the turbocharger is new)
The fuel pressure will not change and remain as usual in this low power period.
Oil analysis is clear , no fuel in oil , no oil in fuel or antifreeze but.
I just bought 6 New injectors R5235915 DDEC3 last week from Interstate Mcbee and I will do the swap next week to see if something will change.
Ty for your time and help.

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Volvo VNL770 2001, Series 60 DDEC4 12.7 @ 500hp, Eaton 13 Sp. OD , 3.42 Rears , 11R22.5 tire

 

I have some white smoke at start for 1-2 seconds and the engine will shake and slightly miss at cold start even if 80F outside .
In the winter it far worse for the first 3-5 minutes is missing , shaking hard , working 2-4 cylinders only i think.

 

Posts: 4
Joined: Oct 2014
Saturday August 15, 2015 11:26 (NEW!)



Thank you for your help , the CAC is checked , ok , inj. cutout show one inj. a bit weak , that's it , and today I went to the garage for the six pak injector swap and I had the brilliant ideea to check the new Interstate Mcbee injectors before opening the head cover and guess what , two of them had the mesh filter missing one side , I guess that the fuel goes into the injector that way and without that mesh non filtered particles can block the nozzles , .
I feel happy that I checked , also one of the ones with the missing mesh had the old original mesh on it and it was very dirty, probably around 85 % clogged (I try pushing air with my mouth) so two of them are bad .
I contacted Interstate Mcbee for this matter and I sent them 3 pictures . Ugly thing knowing how big Interstate Mcbee is and I also wonder how they passed the final quality control ??? since they where sealed ,.....scary stuff .
I also paid 80$ for 2 days UPS rush delivery , that goes as well flushed on toilet since now I have to wait 2 more weeks probably for this story to end.