Where is the spark advance vacuum modulator on a 1979 oldsmobile cutlass supreme with a 260 v8 engine. All manuals and vacuum diagrams have vacuum hoses going to this device, but here's the problem either there is not one on the vehicle or I can't find it. the carb was rebuilt before I purchased it and I think they got the hose routing wrong. It has very rough idle cold, need to try and get this corrected. thanks for any help. Are there any 79 cutlass supreme 260 v8 owners or experts out there? Please help!!!
