1994 Land Rover Discovery Logo
Posted on Mar 08, 2009
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Fuel in oil, rover 3.9 v8

Hi!
The engine was not running well, we stripped it and found a snapped rocker shaft and fuel in the oil.
What has happend if we have got fuel in the oil?
thanks
chris

1 Answer

Steve Slizewski

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  • Expert 45 Answers
  • Posted on Mar 16, 2009
Steve Slizewski
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Joined: Mar 16, 2009
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If your rocker shaft was busted and the valves were not opening, alot of the unburned fuel in those cylinders will end up in the crankcase. the problem is that fuel dries things out and hinders lubrication, the crankshft and camshaft bearing and journals can become damaged. fix your rocker, put fresh oil in, then change it a second time after about an hour of running, use a quality oil additive like MOA or Lucas stabilizer in the second change. low oil pressure can indicate worn crank and cam bearings and or journals.

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