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Motolab
Member Since: 18 Oct 2019
Location: Sleen
Posts: 1820
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I feel sorry for you that it is still not solved..
Sorry for asking, but.. a spinning main bearing is one possible cause for big-end failure, but their can be more reasons for big-end failure.. blocked oil passages can be caused by pollution. Bad O-rings on suction pipe, mis use of silicon gasket fluid.. etc. Etc. Seen it all..
How did the big-end shells look? What is the wear pattern? Best regards
Harold
Always looking for Pre '55's & Pre war British Motorcycles! knowing or having one for sale? PM please. I visit the UK 6 times a year
Ps. I edit my texts quite often, english is not my native language, so I will edit My “typo’s” etc.
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4th Apr 2020 8:58 pm |
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gearmuncher
Member Since: 30 Oct 2018
Location: Woodley
Posts: 143
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certainly seems to be coming from the bottom end, if it is not a big end then must be a main bearing perhaps, don't know what they sound like when they go.
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5th Apr 2020 1:55 pm |
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gone18961896
Member Since: 26 Jan 2020
Location: Yorkshire
Posts: 40
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The shells looked fine. Minimum wear and no signs of hot spots or any scoring. For some reason didn't think to take photos of them. and only bits of metal I've found in sump was from the timing chain tensioner.
Might be a daft question but would a dodgy Injector cause the tapping noise?
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5th Apr 2020 9:41 pm |
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Motolab
Member Since: 18 Oct 2019
Location: Sleen
Posts: 1820
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Well, a leaking injector, can cause to much fuel /liquid staying in the piston crown (cylinder)
Causing to much pressure so pre detonation/knocking... that sounds horrible indeed..
But a IID should show it when a injector is way out of bandwidth normally... at least should give you a direction regarding the suspect injector... Best regards
Harold
Always looking for Pre '55's & Pre war British Motorcycles! knowing or having one for sale? PM please. I visit the UK 6 times a year
Ps. I edit my texts quite often, english is not my native language, so I will edit My “typo’s” etc.
Last edited by Motolab on 5th Apr 2020 11:37 pm. Edited 1 time in total
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5th Apr 2020 11:30 pm |
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gone18961896
Member Since: 26 Jan 2020
Location: Yorkshire
Posts: 40
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Any idea if the icarsoft lr2 can be used for injector readings or does it need to be the iid?
Thanks
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5th Apr 2020 11:36 pm |
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Motolab
Member Since: 18 Oct 2019
Location: Sleen
Posts: 1820
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Sorry, I do not know the answer on that.. as I do not know the icarsoft..
I do know the IID and I can read the live injector values on it... (and the errors on them) Best regards
Harold
Always looking for Pre '55's & Pre war British Motorcycles! knowing or having one for sale? PM please. I visit the UK 6 times a year
Ps. I edit my texts quite often, english is not my native language, so I will edit My “typo’s” etc.
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5th Apr 2020 11:46 pm |
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kim0785b
Member Since: 12 Feb 2021
Location: London
Posts: 135
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Mine has exactly this noise, can I ask what it was in the end?
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13th Apr 2022 10:38 pm |
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ozzyxx
Member Since: 02 May 2022
Location: Bulgaria
Posts: 1
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Josh_010992 wrote:The shells looked fine. Minimum wear and no signs of hot spots or any scoring. For some reason didn't think to take photos of them. and only bits of metal I've found in sump was from the timing chain tensioner.
Might be a daft question but would a dodgy Injector cause the tapping noise?
Hello Josh did you solve the problem or give me a bit light. Got exact the same problem bought a car and i had a pieces same like the tensioner chain in the sump and got the same knocking? did you fix it?
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2nd May 2022 5:48 pm |
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