rizla3066
Registered User
Ok i need some info to resolve some issues i have.
2004 A4 2.5 TDI V6 (163bhp) - Multitronic
I have had this car a few months now and all semed good at first but i am starting to notice a few things. The car seems to idle rough sometimes. I took it in for a service a few weeks ago and the mechanic told me there was a misfire as he could feel it knock the car. i had noticed it before but never thought anything of it. It will only happen when the car is warm and the cold start has cut off so it idles a a little slower.
I have scanned the car with VCDS and no error codes are shown. I also had a look TDI timing by going into basic settings but there is no TDI graph cause i am using VCDS lite. The only other thing i did notice was in group 13 and 14 it shows injected quanitity for each cylinder but it is not showing cylinder 2??????? Surely this cant be correct??? In VCDS i have
Group 13 - Cylinder 1 deviation, Cylinder 3 deviation
Group 14 - Cylinder 4 deviation, Cylinder 5 deviation, Cylinder 6 deviation
So that is my first problem question
My second question is, while trying to isolate this rough idle and misfire i did a injector leak off test to see if any was blocked but i have run into another issue, from what i remember you should have some diesel returning to the pump even if the injector is ok, however i done the test for over 10 minutes at idle and had virutualy no return atall for any of the injectors a few mm was the worst????
2004 A4 2.5 TDI V6 (163bhp) - Multitronic
I have had this car a few months now and all semed good at first but i am starting to notice a few things. The car seems to idle rough sometimes. I took it in for a service a few weeks ago and the mechanic told me there was a misfire as he could feel it knock the car. i had noticed it before but never thought anything of it. It will only happen when the car is warm and the cold start has cut off so it idles a a little slower.
I have scanned the car with VCDS and no error codes are shown. I also had a look TDI timing by going into basic settings but there is no TDI graph cause i am using VCDS lite. The only other thing i did notice was in group 13 and 14 it shows injected quanitity for each cylinder but it is not showing cylinder 2??????? Surely this cant be correct??? In VCDS i have
Group 13 - Cylinder 1 deviation, Cylinder 3 deviation
Group 14 - Cylinder 4 deviation, Cylinder 5 deviation, Cylinder 6 deviation
So that is my first problem question
My second question is, while trying to isolate this rough idle and misfire i did a injector leak off test to see if any was blocked but i have run into another issue, from what i remember you should have some diesel returning to the pump even if the injector is ok, however i done the test for over 10 minutes at idle and had virutualy no return atall for any of the injectors a few mm was the worst????