BenzWorld Junior Member
Date registered: Nov 2005
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RE: Vacuum advance hoses correct?
Yes, generally idle rpm drops when the vacuum advance is disconnected. That is why one should always disconnect the vacuum tube when setting timing from distributor adjustment. The vacuum is not a constant, but changes according to throttle, speed, load. I believe this is a correct summation, but somebody please correct me if I'm wrong.
On where the hose goes, I'm not familiar with your car, but generally the vacuum connection is on the intake manifold, so look for an unused nipple there.
The rpm decrease at idle with the distributor vacuum line removed, especially at the connection is the source of the vacuum, because that "hole" where the vacuum tube enters manifold serves to drop vacuum.