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Home >> BMW >> 1987 >> 535is Standard >> Repair and Diagnosis >> Engine Performance >> System >> MOTRONIC CEC System >> Testing >> Test 1: Fuel Pressure >> Fuel Pressure Too High
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Fuel Pressure Too High

  1. Check vacuum connection on fuel pressure regulator and vacuum hoses for leaks or kinks. Repair or replace as needed.
  2. Check for defective pressure regulator and replace if faulty. Check fuel return line for bends, pinches or clogs. Repair or replace as needed.