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Car and Auto Forums > Montecarlo > '86 305 running...
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'86 305 running rich...

by "Cory Dunkle" <cdnews@[EMAIL PROTECTED] > May 24, 2005 at 02:18 PM

I have an '86 Monte Carlo LS with a 305. It runs very rich. There are puffs
of smoke from the exhaust and it smells pig rich.

I have put the following new components on the engine: plugs, wires, cap,
rotor, O2 sensor. I have also bought a carb kit and thoroughly cleaned out
the insides of the carb. It still runs rich.

At idle if I lean out the idle mixture screws it runs rough, though smells
less rich and less smoke. If I put the screws to where I get smoothest
idle
and highest vacuum it smokes out the exhaust and smells very rich. There
are
no vacuum leaks.

It may be a problem with the carb, I think. Perhaps I need to readjust the
lean mixture stop? I know in a Quadrajet the idle circuit runs off the
primary jets. Perhaps if the MCS is not adjusting the main jet orifice
size
properly it would result in a pig rich idle and all around rich condition.
I
would greatly appreciate any advice or thoughts on this. Thanks.

    Cory
 




 10 Posts in Topic:
'86 305 running rich...
"Cory Dunkle" &  2005-05-24 14:18:55 
Re: '86 305 running rich...
"Shep" <djsl  2005-05-24 17:18:10 
Re: '86 305 running rich...
"Cory Dunkle" &  2005-05-24 19:50:40 
Re: '86 305 running rich...
"Al Bundy" <  2005-05-24 15:12:50 
Re: '86 305 running rich...
aarcuda69062 <nonelson  2005-05-25 00:57:38 
Re: '86 305 running rich...
"Cory Dunkle" &  2005-05-25 14:17:14 
Re: '86 305 running rich...
"Shep" <djsl  2005-05-25 19:14:25 
Re: '86 305 running rich...
"Cory Dunkle" &  2005-05-25 22:15:22 
Re: '86 305 running rich...
"Shep" <djsl  2005-05-26 16:14:07 
Re: '86 305 running rich...
aarcuda69062 <nonelson  2005-05-27 02:40:53 

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