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Mercury Fourstroke Over Revving  Rate Topic 
 
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 Posted: Mon Mar 4th, 2019 02:38 pm
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ArchMan
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Joined: Sat Dec 18th, 2010
Location: Louis Trichardt, South Africa
Posts: 5
Equipment: Too much to mention
Best Catch: 6 x Sailfish (max 68kg) of Hemmingways x 1 day
Favorite Fishing Spot: 25 mile reef, Bazaruto
Boat: KosiCat 17' Walkaround
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Mana: 
Hi,I have a KosiCat 17 WA with 2 x 2013 Mercury Fourstroke 60hp Bigfoots. One of the engines (starboard) runs beautifully however the port-side one has started to over rev at idle. It is probably running at 400-500 revs higher than the starboard engine. I have been told that this could be a mechanical linkage problem. Any suggestions on what to check or do?

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 Posted: Tue Mar 5th, 2019 05:44 am
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Limpopoking
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Joined: Fri May 14th, 2010
Location: Louis Trichardt, South Africa
Posts: 1372
Equipment: The odd rod and reel with some stringy bits and ...
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Mana: 
Hello buurman ;)

Is it not just a simple case of too little slack in the throttle cable? Does the idle speed change slightly when you turn full lock one side to full lock the other side?

Andre van Heerden in town is quite clued up on motors. Shout if you need his contact details.

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 Posted: Tue Mar 5th, 2019 06:29 am
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colindt
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Joined: Mon Jun 6th, 2016
Location: Margate, South Africa
Posts: 10
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Mana: 
Check idle air control valve. Sounds like it is stuck or the pipe has disconnected from the valve or manifold.

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 Posted: Tue Mar 5th, 2019 07:14 am
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ArchMan
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Joined: Sat Dec 18th, 2010
Location: Louis Trichardt, South Africa
Posts: 5
Equipment: Too much to mention
Best Catch: 6 x Sailfish (max 68kg) of Hemmingways x 1 day
Favorite Fishing Spot: 25 mile reef, Bazaruto
Boat: KosiCat 17' Walkaround
Club: no
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Mana: 
Thanks!
Steering does not seem to make a difference. Yes, please send me his info.Cheers!

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 Posted: Tue Mar 5th, 2019 07:17 am
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ArchMan
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Joined: Sat Dec 18th, 2010
Location: Louis Trichardt, South Africa
Posts: 5
Equipment: Too much to mention
Best Catch: 6 x Sailfish (max 68kg) of Hemmingways x 1 day
Favorite Fishing Spot: 25 mile reef, Bazaruto
Boat: KosiCat 17' Walkaround
Club: no
Status: 
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Mana: 
Is this the small plastic pipe?

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 Posted: Tue Mar 5th, 2019 07:54 am
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colindt
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Joined: Mon Jun 6th, 2016
Location: Margate, South Africa
Posts: 10
Equipment: A few
Best Catch: Sailfish T&R
Favorite Fishing Spot: Cape Vidal
Boat: na
Club: Shelly Ski boat club
Status: 
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Mana: 
yes.

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