How do I adjust it so the engine runs a little leaner? And whats the side effects of doing it?

 

you need to tell us what kind of engine and fuel delevry system you have. running lean makes more power and heat.

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ICON Motorsports
1st & 3rd
MM Black Diamond 538 F&AM

 

Need more info, like:

Year
Engine
Induction
Condition
Why

 

Shy of good info... a regulated vacuum leak.

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"Question with boldness even the existence of a *** ; because, if there be one, he must more approve of the homage of reason, than that of blind-folded fear."

-Thomas Jefferson

 

hehe, in all my haste I forget the important part.
84 305 HO engines in good cond, exhaust is getting replaced thursday.

 

Anyone? I wanted to lean it a little tonight before I have a new cat (including cat) back exhaust installed on it tomorrow. Im sure its running rich so I want to play with it and see what happens.

Also, how or better yet what are the effects of making it too lean?? So I know where to stop.

 

it think if it runs to lean then that can lead to detination and over heating?

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- David
88' GTA 5.7L TPI MODS---> air foil, K&N, Shift Kit, 180* therm, TB bypass, Gutted CAT, Flowmaster 80 Series