Skip to content
Aussieveedubbers

flames coming out of muffler whe slowing down

0 likes
Share Share on Facebook Share on X Share on Reddit
Log in to reply

jamiesc Wolfsburg Wizard

559 posts · joined Dec 2010 ·

#882735
okay so today i took the bug out and was running perfect and when i was slowing down i could hear it blowing flames when i was slowing down but i had stoped in a friends place for a few hours and when i left it the weather was alot colder then befor but it wasnt blowing flames and and kind off back firing what could it be ?

beetleboyjeff Custom Title Time!

1,790 posts · joined Feb 2009 ·

#882736
Usually caused by an exhaust leak.
From your ole' mate Jeff

68AutoBug Beetle Restorer - Experience over 138\% - YIKES --

11,654 posts · joined Aug 2002 ·

#882739
jamiesc wrote:okay so today i took the bug out and was running perfect and when i was slowing down i could hear it blowing flames when i was slowing down but i had stopped in a friends place for a few hours and when i left the weather was alot colder then before but it wasnt blowing flames and and kind off back firing what could it be ?
Air cooled VWs hate any air leaks.. in exhaust or inlet side --

so, looks like You have an air leak ---

check all exhaust joins etc.. where its bolted on..
and see if You can tighten them..
You may need new exhaust gaskets
exhaust cement isn't recommended, once it dries it usually falls off.. You can use silastic silicon on the exhaust joints..
just make sure the metal is shiney clean... use a wire brush..

cheers

LEE
- Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY---

jamiesc Wolfsburg Wizard

559 posts · joined Dec 2010 ·

#882742
thats what i thought also its the exhaust flange but i just replace the about two months ago but i did scrapp my exhaust on my driveway last week

and for some reason ive noticed for an unknown reason the left exhaust flange wears out really quick but ill have a check tomorrow and see if it stops

and would anybody have an idea how much it is to get my hubs machined and drilled out to a five stud
cheers jamie

narumi I'll do it tomorrow

138 posts · joined Aug 2011 ·

#882743
mine was like that and as everyone said, exhaust leak
and i got some random asked if i had a suby engine in because it pop flame lol
I fixed the leak and much later on a new engine with good stuff I tried to replicate a leak but got no flame 🙁

jamiesc Wolfsburg Wizard

559 posts · joined Dec 2010 ·

#882745
narumi wrote:mine was like that and as everyone said, exhaust leak
and i got some random asked if i had a suby engine in because it pop flame lol
I fixed the leak and much later on a new engine with good stuff I tried to replicate a leak but got no flame 🙁
haha i no what you mean narumi but what scares me is pulling up next to the fuel pump with a flame blowing out haha

68AutoBug Beetle Restorer - Experience over 138\% - YIKES --

11,654 posts · joined Aug 2002 ·

#882751
V8 supercars design their cars to do that...


LEE
- Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY---

modnrod Fahrvergnugen

978 posts · joined Mar 2011 ·

#882768
jamiesc wrote:when i was slowing down i could hear it blowing flames
Cool!

Joel Now containing 100\% E-Wang

9,368 posts · joined Feb 2006 ·

#882769
Bah, just enjoy it
People pay good money to make their cars do that.

vlad01 Compulsive Aussie Vee Dubber

4,270 posts · joined Jun 2010 ·

#882802
68AutoBug wrote:V8 supercars design their cars to do that...


LEE

no they didn't

Most race cars do if you haven't noticed. 😂 its just unburned fuel buring in the exhaust.

71 notchback,
Past owner of, 70 NB, 73 SB and 72 FB TLE

jamiesc Wolfsburg Wizard

559 posts · joined Dec 2010 ·

#882815
haha there not big flames just like 1 foot haha

Bizarre Moderator The artist formerly known as blue74l

12,785 posts · joined Aug 2002 ·

#882836
I am guessing it will be those shitty clamps on your heater boxes / J tubes
The tubes wear and is hard to get the clamps to clamp.
On top of that the clamps are just rubbish.

Best way to fix it is the weld flanges on.
That is what I did.
Futue te ipsum!!!

jamiesc Wolfsburg Wizard

559 posts · joined Dec 2010 ·

#882920
Bizarre wrote:I am guessing it will be those shitty clamps on your heater boxes / J tubes
The tubes wear and is hard to get the clamps to clamp.
On top of that the clamps are just rubbish.

Best way to fix it is the weld flanges on.
That is what I did.
thanks for the tip bizarre im might just do a quick fix as in going rebuild the flea later this year repaint bigger new engine, gearbox, suspension brakes and also new interior cant wait till i starts it 🙂

Mr Muppet Commited Dubber

74 posts · joined Nov 2010 ·

#882977
I had flames blowing out of my exhaust on idle and low end revs, and it turned out to be carbie issues.
People said to me it was air leaks in the exhaust or intake manifold, it turned out to be crap in my idle jets (twin webers)
Its a process of elimination, sometimes a long slow process. Good Luck

VolksVair Officially Full-On Dubber

252 posts · joined Apr 2010 ·

#883025
CHECK YOUR TAPPET CLEARANCES
Adventure Before Dimentia

jamiesc Wolfsburg Wizard

559 posts · joined Dec 2010 ·

#883048
yeah i had real bad tapet clearence last month it was no clearence i put bigger tapets in mine and it ran really good since

lohoon Wolfsburg Wizard

466 posts · joined Sep 2002 ·

#883072
I had a convertable with a old rusty exhaust and on down shifts and slowing down (overrev) she would bang backfire like uncle buck. Everyone in town used to comment on it. I couldnt bring myself to fix it. I sold it like that!

jamiesc Wolfsburg Wizard

559 posts · joined Dec 2010 ·

#883515
haha thats cool i like that it i might call my next vw uncle buck cause you said that