Well, can't believe I am at this point again - 4 years later!

Engine won't shut off, door locks not working, hard braking...noticed a lot of oil burning out of the tail pipe.
Tried to isolate a vacuum leak, but then saw a lot of oil in the air filter and housing.
Gonna check the diaphragm - I suspect a tear. While open, maybe change the check valves too this time.

Man, some of these repairs I am doing over and over again... just a few years later.
(At least it is getting easier with the repairs - like having the right tools this time, etc.)

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1991 300E 124.030 103.983KE 722358 03 412178
207K

1979 240D 123.123 250K (Project car)

2000 Ford Ranger, 187K

2015 Dodge Ram 1500 EcoDiesel 37K