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displaying posts 1 to 12 of 12
| Author | Subject: exhaust knocing |
 gti6mark
Regular  Location: peterborough Registered: 18 Sep 2007 Posts: 195 Status: Offline |
Post #1
well have a group n rally exhaust(omp make) and its started knocking on the underside of my car seems to becoming from right underneath my gear stick area, its a cat back with the middle and back box, iv altered it once before and now its doing it again any ideas? could the cat be affecting the flow of a quite high flowing exhaust? which in turn making it jolt around a bit? ________________________________________ whatta beast! |
 Posted 17th May 2008 at 16:39
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antn1.b
Seasoned Pro  Location: chichester Registered: 31 Mar 2007 Posts: 1,413 Status: Offline |
Post #2
my cat used to foul on the heat shield under the seat which you could feel through the gear stick, i fixed mine with a decat but it looked like it could be twisted away from it. might be worth a look? |
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Posted 20th May 2008 at 01:27
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gti6mark
Regular Location: peterborough Registered: 18 Sep 2007 Posts: 195 Status: Offline |
Post #3
iv been underneath, and where the middle silencer box is the heat shield so close to the but i find the extreme movement in the exhaust quite bizarre! its literally moving over a cm!!!________________________________________ whatta beast! |
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Posted 20th May 2008 at 05:43
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cescnathan
Regular  Location: Hong Kong Registered: 25 Jun 2009 Posts: 123 Status: Offline |
Post #4
i've got the same situation, after centre and real exhausts replaced, knock sound still appeared underneath the gear stick. then i requested to change the middle box again (under warranty), but it's no help after installed another one.i'll check the cat and the ring between cat and manifold tomorrow to see any leak on them. it's really annoying!! |
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Posted 4th Jun 2010 at 11:06
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welshpug!
Capt Pedantic  Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,838 Status: Offline |
Post #5
bottom engine mount probably fooked  ________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 4th Jun 2010 at 12:43
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cescnathan
Regular Location: Hong Kong Registered: 25 Jun 2009 Posts: 123 Status: Offline |
Post #6
thanks for yr advise mate!i'll go check the mount together. |
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Posted 4th Jun 2010 at 12:57
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tarret
Regular Location: Maidstone Registered: 27 Sep 2009 Posts: 323 Status: Offline |
Post #7
mine knocks from same place, ive found out that its my center section bracket, the one from the car and the zorst are like very close and knock on occasions. |
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Posted 5th Jun 2010 at 01:04
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dragoon
Seasoned Pro  Location: Ghent - Belgium Registered: 30 Dec 2008 Posts: 1,071 Status: Offline |
Post #8
almost the same problem here, mine knocks on the subframe (all engine mounts have been renewed)can't really find the cause  ________________________________________ Team WheelwhoreTeam Limited Edition Astor 306 Francorchamps RIP Virtual Blue 208 GTi quote: I  this place. So many illiterate deluded fool's acting 'ard . . . and so many literate intelligent people to rip them apart and knock them back down again . . . ahh  |
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Posted 5th Jun 2010 at 03:34
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antgti6
Newbie Location: warwick Registered: 06 Jun 2010 Posts: 11 Status: Offline |
Post #9
hi i had the same problem with mine but in reverse only. I found it to be the aliment with the exhaust manifold after i lowered the exhuast system in order to replace the rear beam subframe mounts, it pushed the cat pipe up towards the heat sheild on the round swivel joining ends of the pipes. try loosing the clamps and re-aline the system backwoods. hope this helps |
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Posted 6th Jun 2010 at 23:23
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cescnathan
Regular Location: Hong Kong Registered: 25 Jun 2009 Posts: 123 Status: Offline |
Post #10
yeah, i remember when i changed my middle and rear exhausts, the tech. guy told me my cat was installed in a lower position. you can see the cat half or more under the car. then he ajusted the cat back to a normal position and install the new exhausts. it seems manifold from engine can be moved into a different angle. he shaked the whole exhaust system and seems nothing detect the heat shield. afterward, this problem appeared. i'll will change the lower engine mount (a little crack) and adjust the cat position lower to see it can be fixed or not. |
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Posted 8th Jun 2010 at 22:44
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cescnathan
Regular Location: Hong Kong Registered: 25 Jun 2009 Posts: 123 Status: Offline |
Post #11
lower engine mount has been replaced, didn't adjust the cat to a lower position.problem still the same, nothing improve, serious problem on heavy rainny day, big "LOK LOK" sound appear after some part of gear stick underneath get wet. little sound "guguuuu" appear on gear shift down. cat crack? cat position problem? exhaust back flow? any idea? |
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Posted 20th Sep 2010 at 18:26
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cescnathan
Regular Location: Hong Kong Registered: 25 Jun 2009 Posts: 123 Status: Offline |
Post #12
finally the problem has been soloved.it caused by the new racing exhaust mounts. due to the racing exhaust mount is much harder than the original. exhaust sound effect go into the car in 2800rpm. now changed back to original mounts, no knock sound anymore! i can enjoy driving GTi6 again now! ^.^ |
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Posted 26th Oct 2010 at 15:30
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