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Home >> Subaru >> 1984 >> Brat Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Fuel INJ System - MPFI >> Operation >> Vacuum Switch
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Vacuum Switch

The vacuum switch is mounted in front of the body strut mount. It operates when the vacuum reaches -3.94 in. Hg and transmits the heavy load signal to the MPFI control unit to enrich the mixture.

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