Exhaust is popping...

[65shlbycln]

The 289 used to be running too rich cause i would smell lots of gasoline while running it, so after messing with the carb, i got the mixture and idle to what seems like a good setting. (i.e. It doesnt smell like gas when im sitting at a stoplight.) But now, when i am idleing or when i let off the gas at speed, there is a moderate volumed popping/gurgling sound coming from the exhaust. Is this alright? Is this indicative that there is something wrong with the mixture?

Thanks.

 

[65fastback2+2]

mixture or timing, i fixed mine by changing the timing

 

[Fomocohipo]

From what i know, poping is caused by a exhaust leak most of the time, not ehough back pressure on decel causes air to be sucked in and a poping occours. My headers are cracked and it pops a whole lot on decel. I heard it can also be a carb leak, air geting in that end. Thats my 2 cents...

 

[Maniac66]

My car did popped like that before a major vacuum leak was found on the back side of the carb - a plug had fallen off. The car also didn't like to start or idle until warm due to the vacuum leak.

 

[65shlbycln]

I really didnt describe it right, Im sorry.

It sounds more like a tennis ball being bounced around in a bucket or a metal box. The sound is definitely from the inside of the mufflers. Both of them. I know what an exhaust leak sounds like, and its nothing like that. Its only when I'm at idle too or when i let off the gas at speed. Maybe its nothing. Maybe its just the way flows sound.

 

[65fastback2+2]

i still say checking ur timing, because mine was doing the same thing ur describing, like tennis balls in a metal container.

 

[pabear89]

I'd recheck your mixture, sound like it's too rich.
the popping sometimes comes from unburnt gases in the exhust system.
Just my 1/2 cent.

PB