Car sucking air form somewhere

[Derek Sheldon]

How’s the battery? My 1929 Rover (running an SU and coil conversion rather than mag.) had been a nightmare, very similar symptoms in that would tick over, but as soon as you opened he throttle it was like it was flooding with a loud hissing sound as though it was sucking air. then as you closed the throttle would splutter and stop.

A new battery cured it instantly!

This was about a year ago. The cars not been used much during the year, and when it has they have been short journeys, the same symptoms have re-appeared! Need to charge the battery and get the mag back on the car!

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Thanks guys for all the replies.
Colin the battery is running down but is fully charged and it makes no difference. It certainly  seemed like a carb problem but it was refurbed before I got her and my mechanic has stripped it again and reset it. I will speak to him about the float. What is the "dizzy" I never heard that term before?

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Is the dizzy advancing?. I had similar symptoms on a seven of the engine refusing to rev. I coukd.make it rev by ritchening the mixture by blocking rhe intake with my hand but I was stumped. Eventually found the bob weights in the dizzy were stuck/tight.

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Sounds like a blocked jet or a blocked passage in the float bowl. Some float bowls give problems even though you take them apart and clean them - there must be hidden passages somewhere. If all else fails, try another float bowl. I think I have several spares if you want one.....

Parazine thanks for your help. If you have a float I will buy one. Can you contact me directly on pjquinn24@icloud.com and we can agree cost and posting etc.

Dizzy, is a reference to the distributor