3406e CAT issue/question

if it's fuel leaking down, you should see the oil level increasing or smell raw fuel in the oil if it gets bad enough

 

My MXS does the same thing until the water temp gets above 150*. I was told by both the local Cat dealer(Ziegler) in Sioux City as well as my local Peterbilt dealer that it is a software issue in the ecm. Mine will shake ,shudder clang and bang and smoke white when it does it. Once it gets above 150* it's fine. No extra oil on the dipstick, water level remains consistent, etc. Very irritating indeed. I too would appreciate any ideas.

 

if the mechanical part of the injector is acting up it wont show up on the ecm as a code.

 

if its an acert mine does it also. its the accuaters when the oil is cold its to thick and slowing down the plungers it cant push the cold oil out fast enough through the bleeders. just have to be able to let it warm up enough before you hit the road. its not an ecm software problem,its the nature of the a-cert.

 

i forgot what motor do you have. if its a e-model i doubt it, happened to me once all it did was throw a code still ran alright.

 

ok set it back and see what happens. was it set one tooth advanced or retarded?