Morris Minor Owners Club

Have you checked the head steady?

Can you remove the washer?

You seem to have a non standard spacer/washer there, have a look at the attached

Your link doesn't appear to work, I get: "Invalid Dynamic Link"

No problem, drop me a PM if I can help.

I'm not far from you in Shirley, Croydon. Happy to lend a hand if you need one

Can we see a picture of the plate in question?

The web site works fine for me, no ads either.

The Machine Mart MIG welders have a good reputation, I have one and find it suitable for work on my Morris (and other jobs)

https://www.machinemart.co.uk/p/151te-turbo-mig-welder/

Presume:

GLT 819C
MORRIS MINOR 1000

Colour
Cream
Fuel type
Petrol
Date registered
1 October 1965

These:

https://www.ebay.co.uk/itm/141678902379

Have you confirmed that the carburetor float and needle are in good order? It does sound like you are getting too much fuel at tickover.

Riley 1.5 https://www.ebay.co.uk/itm/364988881030?_nkw=Riley+1.5+brake+Cylinders&itmmeta=01J67Q95DCQNPJJVG2A85QDCFV&hash=item54fb085886:g:lRoAAOSwbeVmhly3&itmprp=enc%3AAQAJAAAA8HoV3kP08IDx%2BKZ9MfhVJKmSquXJcKmINTm5uHtAlaBaTfn%2BcAjG7cuSU9bJfuNH7nVLnLWdMAT4Lt6Q4lcq0TcRoysrrNmem%2F%2Bn8YoG...

Sharp chisel should do it, or file their heads off (ouch!)

Make sure you take off and retain the engine number plate, often lost when the block is skimmed.

SU carburetors do not have accelerator pumps, so operating the throttle pedal will have no effect.

Hope this works