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Original Message
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| TVS routing.... |
| By hawkrod - 07/27/2004 9:37:06 AM; IP 64.12.117.10 |
| that valve controls vacuum to the distributor. the center port is connected to the front of the advance and the port marked m is connected to manifold vacuum and the other port is connected to the carb vacuum port on the side of the front metering plate. this valve simply applies manifold vacuum to the advance when the vehicle is overheating to kick up the idle speed and advance the timing to help cool the car. when these fail they normally fail in the regular position so it is like they are not even there. it should not cause any backfiring in aither case. the thermactor should also not be to blame unless you have an air leak or a bad divertor valve. hawkrod |
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