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Fordson N; intake manifold leak holes

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Old 08-27-2019, 03:18:52 PM
veroude veroude is online now
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Default Fordson N; intake manifold leak holes

I am working on a (English) Fordson N engine, year 1940.
The normall English Kingston MD manifold is on.
Just before the 2 inlet pipes are going into the cylinder block, there are 2 leak holes to let out to much gasoline.
When running the little valves closing automaticly because of the vacuum.
Though when running and I put my finger on I can feel the vacuum a little, so they have a little leak...
How "close" this little valves have to be ...??
Are new ones for sale somewhere....?

thanks! Marco
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Old 08-30-2019, 09:32:00 PM
Butch Howe Butch Howe is offline
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Default Re: Fordson N; intake manifold leak holes

Remove them and install pipe plugs.
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Old 08-31-2019, 03:41:20 AM
RoFoCo RoFoCo is offline
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Default Re: Fordson N; intake manifold leak holes


I find that the engine will flood very easily if they are blocked/removed. They tend to get carboned up over time, and the valve stops seating properly.

Take them off, and soak them in carb cleaner, and clean as much as possible. This often works.

Thanks, Roger
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