engine runs rich
Thread Starter
Racer
Joined: May 2008
Posts: 353
Likes: 0
From: boulogne buenos aires
engine runs rich
Had the car tuned this saturday after doing my firts dizzy rebuilt..So everything is ok but still feels the car is running a little bit rich. I can smell a little gas on the exhaust.. Also some black smoke (not terrible) when I give a hard pump on the gas (revving it up to show off). mixture screws are fine...I took one plug to check it and had some carbon...(not the milk coffee colour)
I have a l-82 stock with a edelbrock performer 600cfm....what can I do to solve this...
I have a l-82 stock with a edelbrock performer 600cfm....what can I do to solve this...
Burning Brakes
Joined: Aug 2005
Posts: 1,164
Likes: 1
From: Europe, France
Try to change your main jets.
You can try 2 sizes smaller ( primary and secondary ) and see how your engine likes it, or not...
Generally, first signs of too lean mixture are bogs or hesitations. Lazy throttle = rich condition.
Looking only at the spark plugs is not very precise. Some metering circuits of the carb may be rich and others lean.
If you want to be more precise, buy a kit with a wideband O2 sensor. Make a search on the forum...
You can try 2 sizes smaller ( primary and secondary ) and see how your engine likes it, or not...
Generally, first signs of too lean mixture are bogs or hesitations. Lazy throttle = rich condition.
Looking only at the spark plugs is not very precise. Some metering circuits of the carb may be rich and others lean.
If you want to be more precise, buy a kit with a wideband O2 sensor. Make a search on the forum...
Last edited by 73StreetRace; May 14, 2009 at 12:55 PM.
