I have gone from a backfire in the intake to valve train noise. Fifty miles into a 100 mile trip the engine got louder. A car following me stated I had smoke from the exhaust. Power seamed ok, no oil consumption but a loud value train. I bleed the injectors not being able to isolate which cyclinder so I believe something is loose under the valve cover? I had it towed back as it sounded like it was going to come apart. Our Mercedes dealer does not have much experience with diesels and I am afraid to go there. Help.

Jim Maddox

1985 300 sd @ 185,000 miles
1990 350 sdl @ 150,000 miles
1980 Unimog DoKa @ 186,000 km

__________________
uptank