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Model specific boards => Golf mk2 => Topic started by: Veedubgt18v on 23 January 2004, 10:49

Title: Popping noise
Post by: Veedubgt18v on 23 January 2004, 10:49

On deceleration, and when changing down from fourth to third and at about 2500 rpm my exhaust makes a popping noise. is this an exhaust problem or something else? the exhaust is a bosal  ??? from the downpipe back

cheers

ps it a 92pb 8v

Title: Re:Popping noise
Post by: Gambit on 23 January 2004, 11:26

if the exhaust is blowing then you will get pop's

with the car parked just open you door and stick your head underneath while you stab the accelerator with your hand

you'll hear the pops then

it might just be a loose bracket, and its blowing at the join, i've had this a couple of times

Title: Re:Popping noise
Post by: Dizzie on 23 January 2004, 12:16

I always thought that was a bonus and sounded cool ;D

Title: Re:Popping noise
Post by: golfvr6 on 23 January 2004, 13:23

Check the exhaust at the joins for tightness mate  :o
Bring her up and i'll paste the joints if ya want  :-*

Title: Re:Popping noise
Post by: Veedubgt18v on 23 January 2004, 19:59

cheers 6 might be worth doin that!
can do coolant aswell ;)  :-*

Title: Re:Popping noise
Post by: turbo on 24 January 2004, 01:25

it sometimes caused by as suggested air leaks it is also caused by unburned fuel ignition in the exhaust
if you get flames out of the exhaust this is called
afterburner! F1 engines do this very
well..
and yes they do it natrual (no flamer kit)

Title: Re:Popping noise
Post by: Veedubgt18v on 24 January 2004, 10:11

it must be because of the turbo and the nitrous kit i fitted yesterday then ;D  :P :-*

Title: Re:Popping noise
Post by: Veedubgt18v on 24 January 2004, 10:12

cheers guys i will paste it up and tighten everything

Title: Re:Popping noise
Post by: modulater on 24 January 2004, 13:55

Could also be that being an aftermarket exhaust it doesn't have the baffling qualities of the original so is just making a popping noise because itcant cop e with the air going through it.

My sister in law had an after market exhaust on her astra and after driving it the wire wool used to hang out the back so it looked like a beard.

That was a bosai too.

Title: Re:Popping noise
Post by: Blue MK2 on 24 January 2004, 15:15

i used to get that popping noise. i had a look under the car and noticed that i had a hairline crack in my aftermarket middle section. This happend because the car was too low for road humps.

Got it mig welded and pasted. Sorted

I seem to have a spit-fire airplane noise now :D

Title: Re:Popping noise
Post by: 90 red 8v on 30 January 2004, 14:13

Magnexs 2nd attemp to supply me with the correct exhaust also looked beardy after 4 miles (all of the sound deadning wadding was haning out the back!!) was dam loud after that  ;D. Only tock them another month to supply me with a replacment, and that had the wrong tail pipes AGAIN  :o

Title: Re:Popping noise
Post by: Veedubgt18v on 22 April 2004, 19:47

this is now fixed exhaust was fine but my ignition timing was retarded by a MASSIVE 25 degrees  :o :o so the popping was unburnt fuel
, cheers for eveyones suggestions tho  :-*