Engine 'tinkle'

[A7novice]

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.

[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.

[richard wyatt]

starting handle?

[Tony Press]

starting handle?

Beat me to it 

[David Stepney]

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.

[Malcolm Parker]

It could be the bendix spring on the starter motor not seating properly.

[Mogens]

My best bid.  Too much backlass in cam/dynamo gears. If it is less tinkling  with full/winter charge .

[Reckless Rat]

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.

[Rick F]

My '35 APD had exactly the same problem. Cured by replacing the fan belt pulley shaft/bearing with a less wobbly one.

[Andy Bennett]

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