BrickBoard Archives
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Re: What does the vacuum hose that goes to the distributor do?[200/1983] posted by sarobal@aol.com on
Sunday, 8 August 1999, at 9:28 p.m.
the vacuum hose applies vacuum to a diaphragm-like device known as a vacuum advance canister. Its purpose is to advance ignition timing under certain driving conditions, providing more power and responsiveness. If you take the hose off and plug the ends it hooked to, the car may become a bit sluggish. If you don't plug the holes, the ensueing vacuum leak will cause poor starting, rougher-than-normal idling and poor fuel economy. This sounds like a bad idea for a street-driven Volvo.
Re: What does the vacuum hose that goes to the distributor do?[200/1983] posted by abe crombie on
Sunday, 8 August 1999, at 10:39 p.m.
And on the turbo motors like yours it retards timing under boost to prevent spark knock (detonation).