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.
Diverter Valve: Notes
After the air leaves the air pump, it goes immediately into the diverter valve. This valve serves to prevent backfire by stopping air injection flow during deceleration). The diverter valve will dump the air supply to the atmosphere for the first few seconds of deceleration. Most diverter valves also have a pressure relief valve which bleeds off excessive air pump pressure to prevent damage to the system. Diverter valves used on many applications are similar to the one shown. See Fig 1.
Use the Manual With the Right Hardware
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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.
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