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Old 28 Feb 2005, 05:45 PM   #1 (permalink)
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Popping Sounds

Since fitting my dump valve I have noticed my car makes a popping sound sometimes when slowing down.

I've not noticed before but then again since fitting the dump valve I've mostly had my window open so it could have been doing it before :?:

Have I got anything to worry about :?:
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Old 28 Feb 2005, 05:51 PM   #2 (permalink)
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hi Lou

some people pay good money to get that popping sound :P

mine has always done it but only now and again......... all the time now though i have a de cat downpipe fitted

i love it :twisted:
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Old 28 Feb 2005, 07:31 PM   #3 (permalink)
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Quote:
Originally Posted by newie
hi Lou

some people pay good money to get that popping sound :P

mine has always done it but only now and again......... all the time now though i have a de cat downpipe fitted

i love it :twisted:
Phew :!: Was worried there for a minute.

Is it connected to the fitting of the dump valve :?:
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Old 28 Feb 2005, 07:43 PM   #4 (permalink)
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Quote:
Originally Posted by scooblou
Quote:
Originally Posted by newie
hi Lou

some people pay good money to get that popping sound :P

mine has always done it but only now and again......... all the time now though i have a de cat downpipe fitted

i love it :twisted:
Phew :!: Was worried there for a minute.

Is it connected to the fitting of the dump valve :?:
pretty certain it isn't .......more to do with unburnt fuel in the exhaust.......but i'm sure the more technical peeps will tell me if i'm wrong :wink:
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Old 28 Feb 2005, 07:45 PM   #5 (permalink)
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Quote:
Originally Posted by newie
Quote:
Originally Posted by scooblou
Quote:
Originally Posted by newie
hi Lou

some people pay good money to get that popping sound :P

mine has always done it but only now and again......... all the time now though i have a de cat downpipe fitted

i love it :twisted:
Phew :!: Was worried there for a minute.

Is it connected to the fitting of the dump valve :?:
pretty certain it isn't .......more to do with unburnt fuel in the exhaust.......but i'm sure the more technical peeps will tell me if i'm wrong :wink:
Calling buzz and nelson
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Old 28 Feb 2005, 07:46 PM   #6 (permalink)
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its the unburned fuel on over- run burning in the exhaust, as newie says, people pay good money for that :wink:


Buzz
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Old 28 Feb 2005, 07:50 PM   #7 (permalink)
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Quote:
Originally Posted by buzz
its the unburned fuel on over- run burning in the exhaust, as newie says, people pay good money for that :wink:


Buzz
As long as its nothing to worry about, I'm happy
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Old 28 Feb 2005, 07:52 PM   #8 (permalink)
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Quote:
Originally Posted by scooblou
Quote:
Originally Posted by buzz
its the unburned fuel on over- run burning in the exhaust, as newie says, people pay good money for that :wink:


Buzz
As long as its nothing to worry about, I'm happy
don't worry be happy....aye..... a cue for a song
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Old 28 Feb 2005, 10:33 PM   #9 (permalink)
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Yep indeed Lou - what you are getting there is unburnt fuel in a very hot exhaust system hence the pops - when its dark you are probably getting flames too 8)
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Old 28 Feb 2005, 10:38 PM   #10 (permalink)
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Originally Posted by Nelson
Yep indeed Lou - what you are getting there is unburnt fuel in a very hot exhaust system hence the pops - when its dark you are probably getting flames too 8)
:shock: Flames, thats 8)

Ok here comes my stupid question lol

Why do some scoobs get this unburnt fuel and others dont?
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Old 28 Feb 2005, 10:52 PM   #11 (permalink)
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fuelling, exhaust type.....


Buzz
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Old 01 Mar 2005, 12:36 AM   #12 (permalink)
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years ago i owned a cavalier 130SRI which did the same......found out the timing belt had slipped half a tooth, could this not be the same thing.??

bit of a techno half wit but i can only go off my past experiences.


chris
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Old 01 Mar 2005, 02:23 AM   #13 (permalink)
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Mine would pop and bang every now and then. (full de-cat). However since having a dump valve fitted it pops and bangs much louder and more often.
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