Exhaust is popping...

6

65shlbycln

Founding Member

Aug 24, 2002

1,266

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0

Atlanta

May 15, 2004

#1

• May 15, 2004

• #1

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

New Member

Aug 4, 2003

1,229

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Louisville, KY

May 15, 2004

#2

• May 15, 2004

• #2

mixture or timing, i fixed mine by changing the timing

 

F

Fomocohipo

New Member

Feb 3, 2004

128

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May 16, 2004

#3

• May 16, 2004

• #3

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

Founding Member

Jan 23, 2002

615

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ME, LA, CA, now back to LA...

May 16, 2004

#4

• May 16, 2004

• #4

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.

 

6

65shlbycln

Founding Member

Aug 24, 2002

1,266

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Atlanta

May 16, 2004

#5

• May 16, 2004

• #5

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

New Member

Aug 4, 2003

1,229

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Louisville, KY

May 16, 2004

#6

• May 16, 2004

• #6

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

 

pabear89

Active Member

Apr 15, 2003

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46

High in the Hills of So Ca with the Voices in My H

May 17, 2004

#7

• May 17, 2004

• #7

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