Took the rocker cover off my 3.9mpi for first time last night. My experience to date is with pushrods and I haven't seen inside Ford OHC before so don't know what's normal. I found:
- Everything covered in dark reddish/brown varnish, except contact surfaces of rocker rollers and cam lobes (Could this be from fuel? I have low compression in one cylinder and wonder if an intake that not's fully closing could be passing fuel into rocker area).
- Rocker rollers all shiny, but some fine lines in them which almost look like grit had been there.
-Cam lobes not all shiny - shiny contact lines with varnish sections, so not making full or even contact with rollers.
- Cam lobes on No1 intake and exhaust have very noticeable pitted line in centre - maybe manufacturing fault.
- Tops of pedestals have moderate encrusted carbon.
- Inside of rocker cover has light/moderate encrusted carbon.
Apart from the obvious faults with the pitted cam lobes, is all this pretty much normal for a motor with 119,000km?
- Everything covered in dark reddish/brown varnish, except contact surfaces of rocker rollers and cam lobes (Could this be from fuel? I have low compression in one cylinder and wonder if an intake that not's fully closing could be passing fuel into rocker area).
- Rocker rollers all shiny, but some fine lines in them which almost look like grit had been there.
-Cam lobes not all shiny - shiny contact lines with varnish sections, so not making full or even contact with rollers.
- Cam lobes on No1 intake and exhaust have very noticeable pitted line in centre - maybe manufacturing fault.
- Tops of pedestals have moderate encrusted carbon.
- Inside of rocker cover has light/moderate encrusted carbon.
Apart from the obvious faults with the pitted cam lobes, is all this pretty much normal for a motor with 119,000km?