exhaust backfire

Jbarker said
Rus

Rusty-I love this! A little good-natured ball busting really makes me feel like I belong. Seriously, I am really impressed by the enthusiasm of this group. I apologize that my posts have been brief and infrequent over the last several days. I have been working way too much but hope to make some progress this weekend.
I fired up the car 2 days ago for the first time this year. Problem persists, but it was backfiring out the driver side!!!???
Did I hallucinate that it was the passenger side all last summer? The backfires were much less frequent though. Maybe 1 every 5 minutes or so. I think because it was cold out? So it was tough to say if it was ONLY the driver’s side. So now I am not worried about that slight header leak.
Another thing (and this is an important detail I forgot to mention to you.). It always is worse when the car is idling low. If I have my foot on the gas and keep it at 11 or 1200 RPMs, it backfires less. With the car in gear and the rpm dipping between six and 800, it backfires more. My brilliant buddy asked if maybe my voltage is dropping, and the ignition box can’t do it’s job if the voltage gets too low. I think he may be on to something. Alternator looks ancient. Maybe at idle the alternator just can’t get it done...? I thank you all again for your knowledge, patience, and humor. I will be looking into this tomorrow. This is a great group!!!
-Jay

Good cause that's how I meant it. Good natured. Too many sissies on this forum take stuff like the wrong way and get their britches waded up and hide under the kitchen table. lol This is an automotive forum, not a Hello Kitty forum. We're real dudes here, not some 80s metrosexuals. LMAO. You fit right in.....you'll find whatever this is.

I'm too lazy to go back and see.....what carburetor is it again? It could be that the carburetor just needs to be richened up a hair. I'm never on board with any experts of gurus when they part with what's always been the tried and true method for determining pops through the exhaust and that's a lean mixture. Somehow, some way, that's dang near almost without exception what it is. Remember, when engines are cold, they need a richer mixture until they get some heat built up. That's the whole purpose of the choke. If you're right on the ragged edge of being too lean across the board, you can get what you have. That's why I recommend fattening it up some just to SEE what you end up with. If nothing else, it will confirm or eliminate that as a possibility.