Stall at speed when clutch depressed

[JeffW]

Thanks tjk , I will try that. Excellent tip I didn't know!

Jeff

[JeffW]

Just a quick update that this is not solved yet. My old carbs are back on the car whilst Alan re-looks at the new carbs I bought from him. My old carbs also have the stalling problem so the mystery continues. I also had John at Dorking Tyre Services (Stag super-expert) look at the problem whilst the new carbs were on. He also could not figure it out and is completely stumped!

More info forthcoming as it comes to hand.

Jeff

[ethel]

I had a similar problem recently with reconditioned Strombergs, possibly from the same supplier. In my case, one or more pistons were sticking in the raised position. The stalling happened when I depressed the clutch to when slowing down for a junction or roundabout. I found that there were traces of a talcum-like dust inside the air valve and these were jamming the piston. It took a couple of removals of the air valves and cleaning everything with carb cleaner spray to remove all traces of dust. Since then they have been fine. I did advise the supplier who apologised and admitted it did happen occasionally, which is disappointing considering he claimed to have supplied over 600 pairs of Stag carbs.............

I just opened my carb rebuild kit and the diapragms come in a plastic bag and are liberally coated with talc - I presume this is to stop them sticking together during storage.

John.

[022Dave]

I just opened my carb rebuild kit and the diapragms come in a plastic bag and are liberally coated with talc - I presume this is to stop them sticking together during storage.

John.

Hello John,

Yes; it acts as a release agent. I don't believe it has any further purpose.

Dave

[JeffW]

All

An update - the stalling issue is resolved with another set of reconditioned carbs. Alan found that there was a sticking valve in the overflow that may have caused the issue. The ones on the car now perform beautifully and the car doesn't stall at speed any longer.


Jeff

[Goldstar]

Good to hear, well done you and Alan at the Gauge Shop

[richardthestag]

excellent news

Just in time for the torrential rain

[JeffW]

excellent news

Just in time for the torrential rain

Yes, it's running perfectly in the garage!