Quote:
Originally Posted by majixmatrix
I really wish we could compile a list of data for bent rods etc. like the nice forum for the classic p0018 codes...
|
So the symptom of the bent rods is the air/fuel ratio changing. I had some problems with the A/F drifting over a few weeks and the ECU needed to perform a lot of fuel trims to try and compensate. We couldn't figure out why. Faulty MAP sensor or Lamba sensor? Changing the engine efficiency table an it would be sweet, and then drift away again.
Turns out the compression ratio was changing as the rods bent and lowered the CR. All 4 rods were in fact bent - the photo is just the worst two of the four.