Don't forget to test vacuum advance. The diaphragms go bad and will supply a continues source of air to engine. Thank you, Gary, the parts doc Reno, Nevada 89521 USA The Biggest Little City In The World Mail: garythepartsdoc@xxxxxxxxxxxx 775 851-1420 -----Original Message----- From: Chrysler300@xxxxxxxxxxxxxxx [mailto:Chrysler300@xxxxxxxxxxxxxxx]On Behalf Of Keith Boonstra Sent: Thursday, May 06, 2010 1:13 PM To: bluesport62 Cc: Chrysler300@xxxxxxxxxxxxxxx Subject: Re: [Chrysler300] what can it be Joe, when you say it's hunting and stumbling that might more likely to be a fuel mix problem than a timing/advance issue. Do you have a problem even setting an idle speed that the engine won't poop out at? A spark problem would tend to be more steady than a vacuum problem. And if it runs/idles better without the advance hooked up, I'd think your timing is too far advanced. So I would keep looking for any possible vacuum leak. For example, is there a chance your intake manifold gasket is leaking? Keith Boonstra - bluesport62 wrote: > > > hi gang. for the last few months i have been following all the advice > you guys gave me about the stumble problem on my 300 sport. i changed > 2 distributors and 2 carbs still have the problem. without the vaccume > advance hooked up it seems to be a little better. when i hook up the > advance it runs terrible. the motor is tight no vaccume leaks. can > there be a leak in some of the vaccume hoses under the dash. would > that cause the problem? at low speed u can feel it hunting. no good > mopar men left in new york when i ask them if they r any good with > chryslers they say they r all the same. ton of cash and same problem. > thanks joe luciano howard beach ny > > [Non-text portions of this message have been removed] [Non-text portions of this message have been removed] ------------------------------------ To send a message to this group, send an email to: Chrysler300@xxxxxxxxxxxxxxx To unsubscribe from this group, send an email to: Chrysler300-unsubscribe@xxxxxxxxxxxxxxx For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm For archives go to http://www.forwardlook.net/300-archive/Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Chrysler300/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/Chrysler300/join (Yahoo! ID required) <*> To change settings via email: Chrysler300-digest@xxxxxxxxxxxxxxx Chrysler300-fullfeatured@xxxxxxxxxxxxxxx <*> To unsubscribe from this group, send an email to: Chrysler300-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/