| Field |
| Automotive |
| Went Obsolete |
| About the 1930s |
| Made Obsolete By |
| Vacuum advances (in turn made obsolete by modern electronic ignitions) |
| When useful |
| Driving cars not equipped with automated spark advances. |
Ignition timing for an internal combustion engine needs to be slightly adjusted in response to engine load for optimum performance. In early automobiles, there was a lever to advance or retard the spark mounted on the steering column.
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Comments:
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2008-03-12 16:52:23 anybody still owns a car with a manual choke? —62.45.47.134
2008-03-12 20:22:28 You could probably add manual chokes as another skill. —209.204.181.86
