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| Joined: | 03-14-2005 |
| Location: | Atlanta, Georgia USA |
| Posts: | 406 |
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It's either fire or gas.
Power goes from the battery, to the key, to the tach, to the coil, to the distributor. If anything in this chain breaks the tach will IMMEDIATELY drop to zero. The problem is electrical. There is a lose wire/connection that you should be able to track down fairly easily.
If instead the tach skips, fumbles and drops with engine RPM as it dies, the problem isn't electrical, it's fuel.
What I hear you describing is a faltering fuel pump that only quits when you put the car in gear! I had two of them...
Alternatively, a fuel float could be stuck or the gross jets could be clogged in one or both carbs causing an over-lean condition.
Judson