[SEL] Another engine running

[Harry Terpstra]

Hi Curt,

> Is an economizer supposed to be present on a 2 or 3 HP IHC vertical?
> Horizontals have them.....
>
Not on the air-cooled,

> Possibly a weak intake valve spring?
> While it may be sealing when checking stationary against compression, it
> is possible that when running there is some valve bounce or slow closing
> action that allows a slight puff of return air back into the manifold.
>
I didn't think of it that way, it's worth a try.
I tried to put a ring under the intake valve spring, to make the tension a
bit stronger, but it did affect the snottering.

> P.S. Have you tried catalyzed paints and primers so you don't have to
> worry about the effect of fuel on your paint?
>
I use Dupont Centari. IMO this is one of the better paints on the market (it
should be if you look at the price;)
But it can't witstand the gas for a long time (more than a few hours)
What paint you use?

TTYL,


H.Terpstra
Sint Anna Parochie
Netherlands
h.terpstra at wxs.nl
http://home01.wxs.nl/~terps027/home.html



----- Original Message -----
From: "Curt" <curt at imc-group.com>
To: "The SEL email discussion list" <sel at lists.stationary-engine.com>
Sent: Tuesday, November 16, 2004 9:11 PM
Subject: Re: [SEL] Another engine running


> Harry,
> Is an economizer supposed to be present on a 2 or 3 HP IHC vertical?
> Horizontals have them.....
> Possibly a weak intake valve spring?
> While it may be sealing when checking stationary against compression, it
> is possible that when running there is some valve bounce or slow closing
> action that allows a slight puff of return air back into the manifold.
> Curt
> P.S. Have you tried catalyzed paints and primers so you don't have to
> worry about the effect of fuel on your paint?
>
> Harry Terpstra wrote:
>
> >The intake valve is seating well!
> >When i turn over the engine by hand (against compression) I don't hear
any
> >"hissing" in the carburator.
> >
> >
> >
>
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