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Post by el1gordo on Feb 1, 2011 21:24:01 GMT
hi all
my 95 divi has just started making a 'pfft' noise from the exhaust,it's only really noticable on startup.
was wondering what this is,any ideas?
al
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Post by bobh on Feb 1, 2011 22:23:49 GMT
Better ask Pilgrim, he understands French.
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Post by el1gordo on Feb 3, 2011 21:54:32 GMT
ok.
so mibbe it's more like a 'put put' noise.
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Post by bobh on Feb 3, 2011 22:26:46 GMT
My first one, which had the original exhausts, used to do something like that. I think I traced it to one of the silencer clamps being loose, and managed to seal it with silicone sealant (the normal bathroom stuff - OK at the cooler end of the system). Bear in mind that there is a drain hole somewhere near the inlet end of the silencer.
But you've got to get down with your ear close to the system to identify where it's coming from. Or get your hand close to it so you can feel any hot gas escaping, or even use a bit of light tissue paper.
If you still have the original system, then it's probably time for a stainless one.
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Post by el1gordo on Feb 5, 2011 11:10:15 GMT
it has a motad nexxus exhaust on it.
but i will have a good look over it,i need to take it off and replace the exhaust gaskets in the next few weeks any way.
cheers
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Post by pilgrim on Feb 5, 2011 11:58:31 GMT
Better ask Pilgrim, he understands French. It translates into pfft in french! A bit like a burble but shorter, it can't be heard under the growl of my Marvins......... ;D |
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griffs
Scooter Rider
Posts: 70
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Post by griffs on Jun 21, 2011 7:41:12 GMT
Hi, I am interested to know more about the drain hole. My 91 Xj600 has the original exhausts. I noticed a small hole on each pipe where the silencer meets the pipe, but they both look too perfect to be caused by fatique or rust. I did notice small whisps of gas coming out of each - so I filled them. Did I do wrong? I quess so if they were ment to be there?  Any advice please. Thanks Griffs |
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Post by showaddydadito on Jun 21, 2011 8:29:39 GMT
I found these, and I assumed that they are to allow condensation to drain out. If you run the bike a short distance and then stand it, you find water comes out of these holes - so presumably if you fill them the bike stands with a puddle of water in the only-just-warm pipes and rots them.
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griffs
Scooter Rider
Posts: 70
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Post by griffs on Jun 21, 2011 8:41:43 GMT
Luckilly I don't do short distances, but if it is standard to have air bleed out of the exhaust I should remove my filling.
I assumed (wrongly) that I had a problem with the holes. I have never seen a vent before.
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Post by showaddydadito on Jun 21, 2011 10:17:45 GMT
It's like the spit valve on a trumpet.
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griffs
Scooter Rider
Posts: 70
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Post by griffs on Jun 21, 2011 11:00:35 GMT
I wonder if blocking these small holes have contributed to the tiny irregular tick over....
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Post by meerkat on Jun 21, 2011 11:15:14 GMT
my 1996 D600 did the same when it started, from cold it started on 3 cylinders and a 'pufft' noise was the 4 coming to life after a few seconds.
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