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Post by Gordon Harrower on May 12, 2010 0:07:11 GMT
This will make me sound even more hapless than I have already, but I'd like to hear what you guys have to say about it. As detailed elsewhere, I had to completely renovate the fuel system on my 1963 Saloon, it having sat dormant for 25 years and gotten very gummed up.
The tank and lines have been cleaned, the fuel pump rebuilt, and the carburetor cleaned. I obviously did something wrong, though, because petrol comes pouring out of the air-cleaner opening of the carburettor, from below the piston, when I try to start the car. I'm sure that my mistake is a simple one, so any guidance would be useful.
Thanks, Gordon.
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Post by stantondavies on May 12, 2010 10:17:05 GMT
The fuel pump appears to be pumping petrol through uncontrolled. Check the float chamber to see if the needle valve is jammed and the float isn't damaged; shake to see if it has petrol inside. Also check whether you have ripped the black shroud around the jet. Burlen Fuel Systems are the people to contact for spares.
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Post by Phil Nottingham on May 12, 2010 18:20:11 GMT
Check that the float needle valve is actuallly present and in place. The black "shroud" is called the diaphragm and it should be replaced if its been there for 25 odd years as it will fail when it gets more use and unleaded fuels actually dissolve the old type
Burlen do kits and for reliability it is best to use one
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Post by Ken Nelson on May 12, 2010 21:49:11 GMT
Also check to be sure the shutoff valve is set correctly to produce the right height of fuel in the float bowl. This is by bending the fork that is pushed up by the float. If fuel is flooding out of the carburetor throat there is a problem with either the diaphragm being split or the shut off valve/float not working correctly or being incorrectly set. If you take the piston assembly off the top of the carburetor you should be able to look down and just see fuel in the jet up to the carb intake, but not running out. I had the same problem a while back with mine.
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Post by Gordon Harrower on May 13, 2010 2:11:02 GMT
Thanks all for your advice. As predicted, at least some of the problem is basic and obvious. Although it always seemed fine, the float now is filled with petrol. Replacing the float is an obvious start, and I'll keep you posted on progress.
Gordon.
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Post by Gordon Harrower on May 26, 2010 15:57:26 GMT
A new float and jet solved my problems.
Thanks again,
Gordon.
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