|
Inspect the vacuum lines -- they have small rubber connectors on the ends of the hard plastic lines. These rubber bits are usually dead by now, and leak. Also, the idle control valve (under the air filter housing) has two large hoses that get hard and come loose, big vac leak. These must all be replaced if bad.
Be aware that constant over-rich running can be a fuel distributor failure, and this is expensive! If the plugs are black, this is a possibility, although I would not panic until I'd checked out the mixture control system (EHA, oxygen sensor, etc).
Peter
__________________
1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!
|