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Engine 'tinkle'

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Engine 'tinkle'
A7novice Offline
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#1
24-09-2023, 08:46 PM
My 1933, 2 bearing Engine is running fine.
However, on tickover, I get a random 'tinkle' noise, appearing to be somewhere from front of engine. Pretty sure it's not preignition, still there when I fully retard A/R lever. I know its a long shot, but anyone any idea what it might be.
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Chris KC Offline
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Location: Darkest Bedfordshire
#2
24-09-2023, 08:58 PM (This post was last modified: 24-09-2023, 09:40 PM by Chris KC.)
I haven't heard 'pinking' for years, modern fuels don't seem to do it. It would normally happen under load e.g. slogging up a steep hill in top and sounded rather like a wine glass breaking. I'd suggest to start by eliminating simple things like the fan assembly (try removing the fan belt) or starting handle.
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richard wyatt Offline
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#3
24-09-2023, 10:51 PM
starting handle?
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Tony Press Offline
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Location: Malvern, Victoria, Australia
#4
24-09-2023, 11:06 PM
(24-09-2023, 10:51 PM)richard wyatt Wrote: starting handle?

Beat me to it  Tongue
http://austin7club.org
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David Stepney Offline
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Location: Bala North Wales
Car type: 1933 RP Standard Saloon
#5
25-09-2023, 08:58 AM
Could also be the fan. The bush doesn’t have to have much play in it to make a noise. Takethebelt off and see if the noise goes away.
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Malcolm Parker Offline
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#6
25-09-2023, 09:32 AM
It could be the bendix spring on the starter motor not seating properly.
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Mogens Offline
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Location: Denmark
Car type: Austin 7 Boattail 1931&1929
#7
25-09-2023, 10:28 AM
My best bid.  Too much backlass in cam/dynamo gears. If it is less tinkling  with full/winter charge .
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Reckless Rat Offline
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Location: Deepest Frogland 30960
Car type: 1933 RP Standard Saloon
#8
25-09-2023, 11:03 AM
First, take the fan belt off. If it's still tinkling then it's likely to be the starting handle. Take off the handle. If it's still tinkling, buy ear plugs.
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Rick F Offline
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Location: Deepest Norfolk
#9
25-09-2023, 11:11 AM
My '35 APD had exactly the same problem. Cured by replacing the fan belt pulley shaft/bearing with a less wobbly one.
Rick

In deepest Norfolk
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Andy Bennett Offline
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Location: Beautiful Northumberland
Car type: 1933 RP Saloon (aka Mildred)
#10
25-09-2023, 11:35 AM
Mine was also the starting handle brass bit vibrating happily to itself.
Not many things on an Austin 7 that can be fixed with a bit of sheep's wool taken from a barbed wire fence Smile
Enjoy yourself, it's later than you think!
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