It's not very hard to pull the injectors out of the intake if the hoses
aren't too petrified.  You could aim each pair into an aluminum pie pan  :-)
   Turning the ignition on and off a few times should pump up the fuel
pressure and show if an injector is staying open. IMHO it is not common for
injectors to fail open.
Disconnecting the electrical signal to an injector should reveal whether
the culprit is actually the ECU.  Good luck.

Larry A.

On Fri, Jun 25, 2021 at 5:34 PM Don Spence <dkspence@telus.net> wrote:

> 83 westy, 1.9 WBX. Last week it started smoking heavily out the tailpipe.
> I had just changed the oil and filter ( Castrol 20-50) and thought perhaps
> I had overfilled it. (4.5 litres). Dipstick said full. Not overfull.
> I had also changed the engine compartment fuel lines using the Go-Westy
> kit just before this. I have inspected it all and there are no apparent
> leaks.
> I have not driven it much since. I did do one 12KM return journey during
> which I added some fuel. I noticed then that the rate of fuel consumption
> seemed high according to the fuel gauge.
>
> Yesterday I drove it again, noticed more blue smoke and returned home
> abandoning my errands.
> When I checked the oil level it was high. Over the full mark.
> Today I drained the sump and filter. It came out in a rush despite the
> engine being cold.
> There were over six litres of liquid, the colour of clean oil.
> I put about 1/3 cup of it into an aluminum pie plate and brought a lit
> match to the edge. It immediately caught fire.
> My conclusion is that somehow, I am getting gasoline into the sump .
> Any suggestions as to how, why, or how to remedy this?
> Thanks