[Public-list] Steaming exhaust Atomic 4

[Gordon Laco]

Hi Bill - 

It sounds like you need a new impellor. Most people recommend that you
should replace them every second year and never wait for them to look like
they need replacing.  Steam from the exhaust is most certainly a sign that
parts of the engine are not getting cooled... In a worst case scenario bits
of the impellor may have blocked the water jacket passages limiting where
the water is going.

There is an extensive support network for Atomic IV engines in Toronto.  Try
Eastern Marine at the foot of Leslie Street.  An alternative might be E&C on
Carlaw.

If you can't get one from either of those folks let me know, I would be
pleased to help.

Cheers - 

Gord #426 Surprise
(on Georgian Bay but a Toronto boy)




> The Atomic 4 on #233 is of the older  type without a thermostat and a
> switchable return hose.  For the last couple of years there has been a little
> steam coming from the exhaust.  This year as some or you may have read, I
> replaced the muffler system with a Vetus LP 40, the pipe arrangement in the
> Alberg Maintenance Manual and exhaust hose.  It seem to be working fine but
> the amount of steam in the exhaust seems to have increased.  I installed a new
> temperature gauge to the replace the old which gave up the ghost a while ago.
> The gauge starts at 130 degrees Farenheit and does not move.  I tested the
> thermostat in hot water and it responds instantly.  It does not appear then
> that the engine is over heating but in fact is probably too cool.
> 
> My guess is that there is not enough cooling water being pumped which is
> causing the steam.  Is the solution to pumping more cooling water a new
> impeller, which by the way, appear to be as rare as fine diamonds here or
> something more onerous?  Any advice or experience with this problem will be
> much appreciated.
> 
> Bill Newman
> Marion Rose III, #233
> Toronto
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