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.
Idle Final Speed Control
When adjusting the injection pump, the injection rate is adapted to the requirements of the engine's required load rate. With the constant valve, the fuel injection pump is to raise the injection curves with speed and constant control valve travel. This rising injection rate curve is in a partial load range, because the injection rate rises faster than the engine's required load rate.
There are unstable control ranges (hesitation while driving). Consequently the duty of partial load adjustment is to reduce the injection rate in partial load range with constant load and increasing speed.
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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