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Old 16 October 2012, 12:34   #11
bingosucks's Avatar
Country: UK - England
Town: Nuneaton
Boat name: gnasher
Make: sr5.4
Length: 5m +
Engine: hidea 5 yam 90
Join Date: Oct 2011
Posts: 534
4 PC HT SPARK PLUG SOCKET TESTER LEADS SEALEY VS5261 | eBay ramp the engine up one might only be failing at higher revs but will allow you to check....your looking for a nice dancing spark

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Old 16 October 2012, 12:42   #12
Country: UK - England
Town: southampton
Boat name: hydradrive
Make: yamaha
Length: no boat
Engine: sterndrives
Join Date: Sep 2012
Posts: 289
As said before it sounding like carb fault

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Old 16 October 2012, 13:32   #13
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Country: UK - England
Town: Sticks, N.Yorks
Boat name: Tamanco
Make: Honwave 3.5AE
Length: 3m +
Engine: Tohatsu Outboard
Join Date: May 2012
Posts: 1,029
Had similar on my Mariner, turned out to be the bottom plug lead shorting in the cowl support !! Swopped the leads & problem sorted although as already said could be fuel !! Are the plugs all similar colour as mine was obviously not firing properly & looked oily with the faulty lead?

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