In previous posts I had no reading from the left 02 sensor and also when I ran a power balance test on Cozult the results were always diferent, usually at least 2 cylinders failed but it was diferent ones each time?

 

So now I have fitted another 02 sensor and a new loom but nothing has changed!:rant:

 

O2 still reads 0

Power balance test - diferent ones fail each time.

 

I am out of answers, can someone help. At this rate I will be going to the Welsh meet as REO in an Audi!!!

if the belt was out a notch wouldnt it either retard or advance the timing on all cyclinders?

 

Only if it jumped a notch on the crank pulley which I have not seen, it would if it jumped a notch on a cam pulley affect one bank!

Only if it jumped a notch on the crank pulley which I have not seen, it would if it jumped a notch on a cam pulley affect one bank!

 

ah yes of course.

Are you a mechanic?

Used to be, but not any more.

sounds deffo like air leak check all the vac hoses going to plenum, boost leak detector should find it