Question about 1986 Ford F 250
Blue smoke is oil. With blue smoke and no power you should take the truck to a diesel reair shop to have it looked at. It could be that the valves need adjusting or it could be broken rings or a cracked piston, all of which are beyond the scope of online diagnosis. With a diagnosis in hand, you should pick up a copy of Haynes Diesel Engine Repair Manual, part #10330. It can help if you think you want to attempt the repairs yourself. Hope this helps.
Posted on Nov 18, 2009
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Posted on Jan 02, 2017
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