ANSWERS: 2
  • 50lbs would be adequate
  • On 4.3 W CPI Fuel pressure should not drop off during test it should hold above 50 and with engine running could go up to 61 If leak down, Possible internal fuel leak, check fuel pressure specs. Fuel regulator leak can be inspected by removing valve on top of plenum and looking for fuel leak in plenum when key is cycled to on. Also check wiring harness to CPI injectors

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