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Old 17 May 2015, 16:05   #1
pow2gran's Avatar
Country: UK - England
Town: Newcastle, Staffs
Boat name: Duma
Make: Shearwater Cutter
Length: 6m +
Engine: Yamaha 200hp
Join Date: Jan 2011
Posts: 491
Suzuki 140hp irritating problem!

I have a problem in that my engine will occasionally stall particularly when moving from idle/neutral into gear then increasing revs. I have had all the fuel lines and filter cleaned, new plugs but the issue is still there. Searching the Internet seams to suggest that it is the IAC valve ( idle air control valve). Anybody had a similar experience?

The engine is a 2006 with 400+ hours. I have uploaded a video running on muffs hopefully showing the problem .

Any comments or help would be appreciated.

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Old 17 May 2015, 16:37   #2
Country: UK - England
Boat name: Carpe Diem
Make: Ribeye 650S
Length: 5m +
Engine: Yamaha F150
Join Date: Oct 2012
Posts: 548
Nick, can you not purchase a diagnostic lead and software as I assume that would be your best option for fault finding?

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Old 17 May 2015, 17:34   #3
telcowilliam's Avatar
Country: UK - England
Town: Caernarfon
Boat name: Bay Bar Dos
Make: Tornado
Length: 6m +
Engine: Honda 130
MMSI: 235092178
Join Date: Sep 2010
Posts: 555
I had a problem last year with an IAC valve. It turned out that it had been painted inside and the paint was coming off and blocking the filters, thus blocking the flow of petrol. Mine had exactly the same symptoms that you state but it was a mercruiser inboard engine that I had the problem with.
There is no bigger hole than the sea within which to throw your money.....anon
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