Mechanics

RUNNING RICH W/ HIGH IDLE,WHEN UNDER LOAD IDLE IS NORMAL

1990 Toyota 4Runner • 280 miles

Changed pressure regulator removed catalytic converter, haven't changed plugs wires or rotor cap and button because no misfire any sggestions?
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Michael e roberson
November 22, 2011.




Put the cat back. Did you check the mass air flow sensor? Common for running rich. Other things like air filter, leaking injector and high fuel pressure are common items to check.

Roy

ASEMaster6371
Nov 22, 2011.


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