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1979 280ZX
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Discussion Starter · #1 ·
i have issue when starting the motor at cold , the rpm not raise, and it idle is slightly low than it should be. After worming evrything become ok and excellent idling . next day I pulled out the air regulator when the engine is cold it is partially open and close after 4 or 5 minutes when apply 12DCV . All wiring connectors are okay. Air fuel ratio set is 14 , timing set 10 BTDC, no air/vacume leakage . . i believe the air regulator is function good
any advice wat to do / thank you
saad
 

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Some of the Aux Air Regulators are adjustable. If you have the small nut on the outside you can adjust them.
Gas Wire Cable Auto part Metal


Here is some information on how it works and adjustment.
http://www.atlanticz.ca/zclub/techtips/aar/index.html
I adjusted one of mine and took it to the max adjustment and it was not enough so I ground a little off the plate to get more air for cold start.
 
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