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Engine cuts out - Graham Barker - 04-04-2021
Twice, lately the engine on my 1938 Ruby has cut out at the end of a rather rapid right hand corner. It can be restarted after bringing the car to rest. Has anyone else encountered this and have advice on how to eliminate it?
I have checked for loose wires in relation to the ignition system and found none.
I wondered whether it is the result of petrol sloshing to one side of the carburettor bowl with centrifugal force. It is the original standard horizontal type of carburettor.
RE: Engine cuts out - AustinWood - 04-04-2021
We had cutting out after taking roundabouts enthusiastically. This is a 1929 fabric saloon with front tank, gravity feed. It was caused by loose debris in the tank moving over and blocking the outlet. Fixed by attaching a pipe to the petrol tap and blowing into the tank. Eventually we took the tank out and cleaned it out.
RE: Engine cuts out - Graham Barker - 04-11-2022
I have reopened this thread for the sake of completeness. Over time the cutting out became more frequent. I narrowed it down to being associated with stopping after rapid deceleration, rather than right hand turning.
It seemed to me that the weakening of the fuel mixture that could occur as a result of air leaking in around the worn throttle spindle might be the cause. This would be particularly significant on rapid deceleration with the car pushing the engine along at high revs causing greater vacuum downstream of the closed throttle spindle.
A carburettor repair specialist confirmed my suspicions about this and fitted teflon throttle spindle bushes and a new spindle. This has cured the engine cutting out. It has also eliminated the occasional backfiring running downhill with throttle closed.
No more embarrassment with engine cut outs.
Cheers
Graham
RE: Engine cuts out - John Mason - 05-11-2022
Graham, It could be you engine is starved of air when you go around corners if there is a small piece of dirt in the jet accessed by the brass screw on the bottom of th carb. This jet allows air to bypass the closed throttle butterfly when your foot is off the throttle. It could be that centrifugal force moves this speck in of dirt enough to stop th engine. Rather than removing the jet that which can be awkward and can damage it a can of carb cleaner is a better option.
John Mason.
RE: Engine cuts out - Graham Barker - 05-11-2022
Thanks John. At the moment cutting out on turning has been eliminated. I will keep your advice in mind for the future.