None starter when warm

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norris6
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None starter when warm

Post by norris6 »

Hi there. Just a quick question incase someone out there can help.
I have a 67 minor that will not restart when the engine is up to running temperature. Bit of a bind when you stop to re-fuel lol.
Any suggestions as to a cure would be grately received.
bmcecosse
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Post by bmcecosse »

Likely to be a fuel over flowing problem. Try holding the throttle wide open while you crank it. Does the petrol pump 'tick' steadily when you switch on the ignition? If so - indicates that the needle valve in the carb float chamber is worn - and is allowing fuel to flow through even when the bowl is full. Doesn't matter when cold - it wants extra fuel then, or when running because it can use up the fuel. Probably a new needle vlave will solve the problem - cheap and easy!
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norris6
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Post by norris6 »

Thanks for your advice. Much appreciated
bmcecosse
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Post by bmcecosse »

The test is - does the fuel pump tick constantly ? It should tick once or twice when you switch on - but should then be silent.
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norris6
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Post by norris6 »

No, there was no ticking when the ignition was switched on. Does this denote a fuel pump problem?
bmcecosse
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Post by bmcecosse »

No - that's quite normal really, well - after the initial couple of ticks! Hmm - may simply be that the fuel level is set too high - although it's not really adjustable on these later carbs. Has this non-starting when hot thing happened just once - or several times?
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mike.perry
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Post by mike.perry »

Is the choke closing fully when you push the knob in? Push the centre of the carb jet upwards and there should be no movement.
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norris6
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Post by norris6 »

bmcecosse wrote:No - that's quite normal really, well - after the initial couple of ticks! Hmm - may simply be that the fuel level is set too high - although it's not really adjustable on these later carbs. Has this non-starting when hot thing happened just once - or several times?
Only happened the once so far!!
bmcecosse
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Post by bmcecosse »

Oh well - may be just a one-off. Next time it happens - foot flat to the floor - don't pump it - and crank it!
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norris6
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Post by norris6 »

Thanks guys
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