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V11 Le Mans/sport Popping!

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Ken-Guzzibear View Drop Down
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    Posted: 02 Jul 2014 at 12:30
Has anyone really solved this problem 2500-3000 revs a popping in the collector box, both sides BUT not always I notice cold engine no probs also when the air is cool alot less, I DO have unrestricted "silencers and a Stucchi X over, the plugs look fine it runs and goes like a  quick thing sounds fantastic BUT when running through the Town at 2-3k revs I get a muffled pop in the area of the x over it actually blew the baffles in the oem X over and has once blown a throttle body off... any ideas? I have checked, re checked and sealed the zorst system joints.
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Brian UK View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 02 Jul 2014 at 17:27
This on the overrun Ken? If so it sounds just like most of the CARC bikes  which is down to a weak mixture designed to get round emmission rules.
Brian.

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Ken-Guzzibear View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ken-Guzzibear Quote  Post ReplyReply Direct Link To This Post Posted: 03 Jul 2014 at 11:54
Actually no not the over run although it will happen IF I go from high revs to low, no it is running on low throttle 2-3000 rpm  it is a dull thudddd in the collector box area and occasionally a bit further back but NOT the LOUD bark of a full on backfire. It does not seem to happen on a cold engine. It is as if there is some sort of hotspot reigniting unburned fuel !!!! if that does not sound too daft. The plugs , replaced last week were spot on colour wise.
 
I was wondering if it was a leaking inlet rubber but the old trick of spraying some WD over the inlet did not cause tick over to increase, on start up it ticks over fine after a spirited run you can head the very subdued thudd in the collector area now and again you can even tell it does originate from both sides. I figure IF it was carbs it would be the throttle stop screw and idle adjusted but the FI I am no good at all with I printed off the TPS setting guide and ....@*@** duuurrrrr NOW if there is someone local who can show me how to sort it ...:))
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Post Options Post Options   Thanks (0) Thanks(0)   Quote garyr Quote  Post ReplyReply Direct Link To This Post Posted: 03 Jul 2014 at 17:33
My V11 was backfiring nearly every time i closed the throttle, and it was a real pig to ride around town. In the end i got a tune up from Mel in glasgow, what a transformation, like owning a new bike. I had checked all the usual things before hand but sometimes you need to get into the electronic/ black magic side of things.
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Ken-Guzzibear View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ken-Guzzibear Quote  Post ReplyReply Direct Link To This Post Posted: 03 Jul 2014 at 19:34
Yeah thats what i figured oh looks like it'll have to go  in .... oh bummer
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Ken-Guzzibear View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ken-Guzzibear Quote  Post ReplyReply Direct Link To This Post Posted: 19 Jul 2014 at 17:55
All sorted it was an inlet rubber mount with a crack in it could not see it on the bike but took it off and a big crack aroung the back of it ordered 2 new ones from Gutsibits just in case on wed here Thurs all done today ...= One very happy bear
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Mike H View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mike H Quote  Post ReplyReply Direct Link To This Post Posted: 20 Jul 2014 at 19:31
Simple as that ~ pesky rubbers again
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Ken-Guzzibear View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ken-Guzzibear Quote  Post ReplyReply Direct Link To This Post Posted: 21 Jul 2014 at 12:19
Yep get a tear in em causes ALL sorts of twubbul ...lol
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Post Options Post Options   Thanks (0) Thanks(0)   Quote garyr Quote  Post ReplyReply Direct Link To This Post Posted: 22 Jul 2014 at 12:12
Well that was a easy fix, might get a couple of new rubbers for mine. Was thinking of changing all the lines anyway (fuel/breather) as age will be taking its toll. Bike not me LOL
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Ken-Guzzibear View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ken-Guzzibear Quote  Post ReplyReply Direct Link To This Post Posted: 23 Jul 2014 at 21:12
wet ethanol safe ones had to replace all the fuel lines on our bikes 
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Ken-Guzzibear View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ken-Guzzibear Quote  Post ReplyReply Direct Link To This Post Posted: 13 Nov 2014 at 15:57
replaced TDC sensor too it had cracked so oil getting up thro it see post in alt parts or spine frame
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Post Options Post Options   Thanks (0) Thanks(0)   Quote johnno Quote  Post ReplyReply Direct Link To This Post Posted: 13 Nov 2014 at 17:20
interesting read after the problems I had with sport and corsa I read all these types of threadsThumbs Up
GSXR1100 L ,Moto Guzzi 650tt/ntx.750xpa,t5 850.1100 sport,1100 sport corsa rider
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ken-Guzzibear Quote  Post ReplyReply Direct Link To This Post Posted: 13 Nov 2014 at 18:58
are they all sorted now Johnno
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Post Options Post Options   Thanks (0) Thanks(0)   Quote johnno Quote  Post ReplyReply Direct Link To This Post Posted: 15 Nov 2014 at 13:00
Originally posted by Ken-Guzzibear Ken-Guzzibear wrote:

are they all sorted now Johnno
my 1100 sport is one of my proudest moments ,a lot of folk would have sold it but I sorted everything without spending a lot of money and now she is rolling well good to say im happy is an understatement.
My corsa is all sorted and runs perfect but man what a pig of a bike when I first got it ,myself,muzzi moto and twiggers all had big headaches with it cutting out but now I would go anywhere on her and the bill went to muzzi moto so no problem to me .
THE 650  get treated really bad but never misses a beat she may not look good but that was a star buy .
750 and 850 run perfect but I got a lot of tidying up to do on both and no time to sort .
Im well happy when I open that garage door I could just sit and look at themSmileSmileSmile
 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 15 Nov 2014 at 14:18
It's always good when it works out.
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