Whoever chimes is going to want or need to know what kind of carbs you have on the truck. If they are adjustble that would be the first things I would try to do. Usually the main jet is fixed and is used for high speed. The idle jet is usually adjustble. Some carbs it chages fuel to the system, some others it chages air to the system. There are also some tubes in older carbs that may need some changing for running duals too.
On Sun, Sep 19, 2010 at 4:38 AM, Roy Marks <[email protected]> wrote: > > > I have dual carbs sitting on my 216 and it runs beautifully. However, it > runs very very rich at idle. Tail pipe black..even carbon on the driveway > under it. The carbs were professionally rebuilt and I used a vacuum gauge to > set the idle mixture and "peaked" the vacuum. I have an inline pressure > gauge in the fuel line and pressure is around 2 PSI. I have repeatedly > checked for vacuum leaks and find none. I have an HEI system from Patricks > installed. Any suggestions? As I said..everything runs flawlessly, the only > issue is way too much carbon. > > Thanks, > Roy > '51 3600 > > [Non-text portions of this message have been removed] > > > [Non-text portions of this message have been removed] ------------------------------------ Ole Chevy and GMC trucks rule! To unsubscribe, send an email (with no subject, no body, just the email), to: [email protected]! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/old-chevy-truck/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/old-chevy-truck/join (Yahoo! ID required) <*> To change settings via email: [email protected] [email protected] <*> To unsubscribe from this group, send an email to: [email protected] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
