Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1982CHEVETTE L4-98 1.6LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTIGNITION SYSTEMDISTRIBUTORVACUUM SPARK DELAY VALVETESTING AND INSPECTIONDISTRIBUTOR SPARK VDV
1982 Chevrolet Chevette L4-98 1.6L
Distributor Spark VDV
1982 Chevrolet Chevette L4-98 1.6LSECTION Distributor Spark VDV
OPERATION
This valve has two chambers with an orifice and one way check valve between them. This arrangement allows free air passage toward source vacuum and restricted (delayed) air passage toward the controlled unit or units.
Ports 1 and 2 are connected to one chamber and connected to vacuum source. Ports 3 and 4 are connected to the other chamber and are subject to the delay operation of the valve.
This valve has two chambers with an orifice and one way check valve between them. This arrangement allows free air passage toward source vacuum and restricted (delayed) air passage toward the controlled unit or units.
Ports 1 and 2 are connected to one chamber and connected to vacuum source. Ports 3 and 4 are connected to the other chamber and are subject to the delay operation of the valve.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.