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-   -   Question on CMI captains choice exhaust (https://www.offshoreonly.com/forums/general-q/306421-question-cmi-captains-choice-exhaust.html)

05 Fountain 12-15-2013 03:25 PM

Question on CMI captains choice exhaust
 
Hello all, My current boat is the first I've owned with CMI switchable exhaust (always had corsa before). With the exhaust selected to quiet it works for a while then after 10-15 minutes the exhaust starts to turn on. Do I have a leak or bad pump? Not too familiar with this system and wish it was corsa. Thanks in advance!!

jamontes 12-16-2013 08:00 AM

If it closes the flappers the pump in good. More than likely it is leaking at the STC fittings or accuators.

05 Fountain 12-16-2013 01:30 PM


Originally Posted by jamontes (Post 4042524)
If it closes the flappers the pump in good. More than likely it is leaking at the STC fittings or accuators.

Thanks man, I'll check those fittings with some soap solution

mike tkach 12-16-2013 01:36 PM

what is happening is quite common,a very small leak will slowly let the flaps open,just hit the switch after about 10 minutes.

05 Fountain 12-17-2013 10:58 AM


Originally Posted by mike tkach (Post 4042683)
what is happening is quite common,a very small leak will slowly let the flaps open,just hit the switch after about 10 minutes.

Mike, Problem is, if you run hard they'll open even sooner, I'll trouble shoot when this cold spell is gone. Thanks


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