I’m sure the smarter fellas will be along with better advice than this. I suspect you have a vacuum leak causing the carb to lean out as it warms up. That would explain the no trouble start with the choke set and a rich mixture that leans out as the choke opens. It could also be the opposite! A crappy, smelly rough and low idle speed can be a carb that is spewing fuel from too high a float level, a bad float or bad needle and seat. Pull the air cleaner. Start the motor and look straight down the throat of the carb. Pull the throttle open by hand and watch the action. Look for fuel dribbling. You should be able to hear the wheezing of a carb dripping fuel. If you see nothing like that I’d revert back to my lean theory. All of this supposes that you have already checked the simple and easy, points are properly gapped and in good condition, and so on. Your first objective should be to determine if the problem is fuel delivery or ignition. Danny Plotkin From: chrysler-300-club-international@xxxxxxxxxxxxxxxx [mailto:chrysler-300-club-international@xxxxxxxxxxxxxxxx] On Behalf Of John Nowosacki Went to a great car show this past weekend but have run into an issue since. The car ran great at highway speeds and at idle to and from the show, until I pulled into the street I live on when the engine stumbled and died as if it was out of gas. I cranked the engine and stabbed the gas a couple of times and it started right back up, but was/is running ragged at low rpm/idle. If you slowly depress the gas pedal, it will stumble and try to stall unless you feather the pedal to get through that point and up into the higher rpm range, and it will then take off just fine and run at speed with no issues. Once it gets cold, and you tap the pedal to set the automatic choke, it fires right up and runs fine on the fast idle cam of the carb, but then as it warms up and the choke is wide open, I can't get a good low speed idle and it wants to stall under load until I get past about the 1500 rpm mark, then all seems to be well. Did I suck some crap from my 54 year old gas tank into the idle or low speed circuits of the carb? Did something change inside the distributor? Is the fuel pump only doing its job at higher rpm? I'd prefer a more logical approach to troubleshooting as opposed to shotgunning and throwing parts at the problem (fuel pump, carb rebuild, points, condenser, vacuum advance, etc.) Any suggestions appreciated. -- For archives go to http://www.forwardlook.net/300-archive/search.htm#querylang --- You received this message because you are subscribed to the Google Groups "Chrysler 300 Club International" group. To unsubscribe from this group and stop receiving emails from it, send an email to chrysler-300-club-international+unsubscribe@xxxxxxxxxxxxxxxx. To view this discussion on the web visit https://groups.google.com/d/msgid/chrysler-300-club-international/001c01daa6e9%2407ae5fb0%24170b1f10%24%40northeastretail.com. |
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