Joined: Jul 2018 Posts: 102 Threads: 33
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This is an odd one, car starts, runs happily for 10 seconds, starts first pull of the starter, revs fine then dies, I've checked the second after it cut out, I still have a nice blue spark, the carburettor is full, if I keep cranking the plugs get wet with fuel, I've tried different coil, condenser, plugs, fuel pump has been rebuilt today as the diaphragm was a tad ropey anyway, plenty of fuel being delivered (both coil and condenser are known good ones)
No chance if restarting what so ever,I might get the odd cough and engine tries to run for a second or two.
I leave the car about half an hour and the same thing all over again
What in the name of God could this be??
Joined: Nov 2017 Posts: 555 Threads: 54
Reputation:
7
Location: West Yorkshire
Car type: Type 65 1934 + RP 1932
It sounds like it's flooding. Maybe you did too good a job of rebuilding the pump! I would look at the float cut off in the carburretor.
Joined: Jul 2018 Posts: 102 Threads: 33
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I have had a look at the valve in the carburettor, absolutely fine, no fuel gets passed with light pressure of my thumb.
Joined: Aug 2017 Posts: 923 Threads: 52
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5
Location: The delightful town of Knaresborough, North Yorkshire
Have a spoon full of petrol to hand. When it cuts out put a spoonful into the air intake of the carb, then try to start it. This should help with diagnosis.
Joined: Aug 2017 Posts: 848 Threads: 22
Reputation:
9
Location: Near Cambridge, UK
Car type: 1928 tourer (mag type), short chassis Gould Ulster
Has it been run regularly, or is this first time for a while? How are the compresions when you turn the handle just after it has died?
Joined: Jul 2018 Posts: 102 Threads: 33
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well it hasn't been used in a fair while but apparently run recently, and on the starting handle it has a lot of compression, bloody hard to turn over really for a seven engine.
Joined: Jan 2019 Posts: 1,481 Threads: 17
Reputation:
12
Location: Bala North Wales
Car type: 1933 RP Standard Saloon
The symptoms seem to suggest a blockage in the carburettor. My first port of call would be to strip and thoroughly clean the carb, paying special attention to not only the jets but their respective passages. (I assume it is fitted with a Zenith 26VA instrument).
Joined: Jul 2018 Posts: 102 Threads: 33
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carburettor has been cleaned with acetone and blown through with compressed air, the engine starts and revs cleanly, see why its driving me mad... haha
Joined: Jul 2018 Posts: 102 Threads: 33
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its definitely compression, the engine will just suddenly run worse, refuse to rev and cut out over a couple of seconds.
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