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Found 2 results

  1. New on fuel system: - Fuel Hoses - Vapor Hoses - Pressure Regulator - Fuel Pump - Clean tank - Rebuilt injectors Vacuum is 19. When driving the car, the fuel pressure will increase to 36 psi at full throttle. It is 28 psi when idling and sounds like it's running lean. Pinching the return fuel hose to the tank increases the fuel pressure to 52 psi. Removing the vacuum hose to the Pressure Regulator ups the pressure to 36 psi. Also ran the car out of a gallon gas tank and still 28 psi idle. Factory Service Manual says it should be 36 psi. Any ideas on getting it to 36 psi? Thanks.
  2. Hi folks, I am a new Z owner (1972), and looking forward to refreshing/restoring this beautiful car. She currently runs OK, but could be better. I am, by no means, a great mechanic, but it appears that there are plenty of helpful folks in this forum. One of the previous owners of this car installed a CR PRO/FUEL adjustable pressure regulator downstream of the fuel pump, prior to the carbs. It is set on 4.5 (I assume this means 4.5 psi). I am not sure of the need for this fuel pressure regulator. I have read many complimentary comments on Z-Therapy's work in refurbishing the dual SUs, so I am planning to take that route. If the carbs are rebuilt/balanced, have any of you had the need for such a fuel pressure regulator? Should I be concerned about the fuel pump? I suppose I could easily remove the regulator to see how she runs. Any comments on this aftermarket piece would be appreciated. Thanks, Steve
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