RWD - A mechanics BS or actually possible? (not volvo related but interesting)
                    

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A mechanics BS or actually possible? (not volvo related but interesting) 200

I wouldn't believe a new engine is needed. If either of the valves in any cylinder are leaking, i.e., compression loss, you can't remove the valve cover and see anything usefull. Only if the valve train isn't working the valves open and closed, as in the case of a broken valve spring or bent valve, would you be able to see. You need to run the compression check and / or take the truck to another shop for a second opinion. The black smoke wouldn't be piston ring related as it's most likely unburnt fuel in the cylinder causing the black smoke. Rings or valve seals, either one, would smoke blue. So, the black smoke and the other issue may be related only remotely and that's if the truck has a high pressure constant injection system that would allow fuel to leak down past the intake valves into the cylinders then not get burnt when the cylinder lights due to bad valve(s).




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New 18446744073709551614 A mechanics BS or actually possible? (not volvo related but interesting) [200]
posted by  transit wind  on Mon May 11 22:29 CST 2009 >


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