Hi,
after I was having low compression in cylinders 8 & 6 on my 4.6 discovery 2 ... I went for full engine rebuild... new: Rings, bearings, lifters, Sparks&wires, oil pump and high lift camshaft 53231.
I have the following issues since the first start till now ( ~ 1500 km):
- rough idle... The exhaust sounds crazy.
- oil turn to dark black very fast.
- high oil evaporation from pcv.
- multiple missfire on diagnostic.
- very high fuel consumption 30L/100km.
I have done a compression test for all cylinders and it was 150 psi +/- 5psi.
I've test the intake manifold for any leak by spilling some water.
Recently the back crank seal start to leak oil while I cancel the pcv and had an oil catch can!!
I've tried to make the spark plugs with narrow Gap but no effect.
What you think I should do??