Posted by Owen Aaland on December 10, 2014 at 16:33:31 from (216.47.34.37):
In Reply to: 1066 Engine Problem posted by Rich in Ont. on December 10, 2014 at 07:47:12:
What was dripping from the exhaust manifold after idling for an hour is mostly water that has condensed from water vapor that is a result of combustion. It is mixed with soot to give it the black color. You will notice that as it dries it is not very oily.
The ticking may be either a loose valve adjustment or a leak between the exhaust manifold and cylinder head. If it is the valve adjustment you probably have a worn camshaft and lifters.
If you have fuel leaking into the crankcase it will dilute the oil and in turn cause it to burn more as is escapes past the rings. The amount of fuel coming in can mask the amount being burned.
Fuel can leak into the crankcase even with the engine off. It will happen must faster with the engine running because the injection pump housing is then running with charge pressure also pushing on the seals. If the pump has not been serviced in the past the age of the seals would cause the to be suspect even of the pump housing is good.
At 6000 hours the engine would be a good candidate for a worm cam and lifters. If the noise if from the lifters I would recommend doing a test on the cam to see how much lift it has lost. If you have a worn cam then you will have to decide what would be the best route for you follow. To repair it I would recommend removing the head to inspect the cam and lifters. You can also inspect the sleeves for wear at that time. I would drop the oil pan to inspect the crankshaft bearings. At that point the sleeves and pistons can be pushed out as an assembly to inspect for cavitation. If there is little to no cavitation the sleeves can be rotated 90� and reinstalled with new O-rings. The bearings will probably have enough were to justify replacing with new ones. The cylinder head should be inspected for valve protrusion/recession and loose valve guides.
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