W 250 Pickup L6-359 5.9L DSL (1989)
NOTE: Excessive fuel on the exhaust side of the turbocharger will look like oil leaking by the seals. This condition can come from injector
overfueling or excessive engine operation under "no load" conditions.
Excessive Turbo Noise
Turbo Noise And Exhaust Leak
Places To Check For Exhaust Leaks
Turbocharger Noises
8.
Check for excessive turbocharger noise. The turbocharger will normally make a "whining" noise that varies in intensity depending upon engine
rpm. If there are any "clunking" noises or rattles when the engine is revved up, check for loose turbocharger mounting bolts, intake, or exhaust
leaks. Lower pitch noises or rattles at slower engine speeds can indicate debris in the system or that the rotor is contacting the housing. Before