View Single Post
JFairman JFairman is offline
Registered User
Join Date: Jul 2006
Location: S. Florida
Posts: 7,289
Take a voltmeter and check the voltage in the plug going to the control pressure regulator. It should be 12 volts to heat up heater element on the bimetallic spring inside the CPR.
Your good cold start followed shortly with very rich mixture symptoms sound like it isn't getting it.

Also check the rear fuel pump relay. It's the one closest to the windsheild on the relay panel. That relay powers the rear fuel pump and the heater elements in both of the mechanical CIS cold start devices: the control pressure regulator and auxilliary air valve if thats the right name for it.
If the rear fuel pump relay isn't working the car will run on only the front pump and it will be running too rich because the CPR or WUR or whatever you want to call it will stay in cold start mode.
Old 07-27-2014, 07:10 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #12 (permalink)