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Non-Turbo Engine

  1. Check vacuum lines for correct routing. Warm engine to operating temperature. Some models with EGR delay timers must run for at least 1-2 minutes before EGR works.
  2. While watching EGR pintle, abruptly accelerate engine to 2000-3000 RPM. EGR pintle should open at least 1/8".
  3. Connect a hand-held vacuum pump to EGR valve. Idle engine and gradually apply at least 10 in. Hg. EGR valve stem/diaphragm should move smoothly and engine speed should drop at least 150 RPM.
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