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Old 14 July 2013, 07:24   #1
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Evinrude e-tec 75 loss of power

Enjoying the lovely weather in Poole harbour yesterday when engine suddenly went very lumpy and lost 75% power?! Slightly concerning as I was quite a way out to sea!

Engine idles fine one minute then will conk out the next, it is very intermittent one minute full power then looses it again??? Oil is fine lots of fuel... Any ideas as I genuinely no nothing about the engine and everything has been great this season until now!!

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Oliver
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Old 14 July 2013, 07:28   #2
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Any audible alarms? Does gauges say anything?
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Old 14 July 2013, 07:46   #3
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Hi Andy

Nothing unusual no, one of the guys at the marina reckons fuel / oil starvation?? It does use little oil I must admit.. Just strange how suddenly its fine then sod all
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Old 14 July 2013, 08:33   #4
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Sounds like fuel starvation to me.

Vent on tank open I assume? If you take the filler cap off does it hiss?

Any possibility of a kink in the fuel line? Or something or someone heavy on it?

Bulb on line hard to squeeze?
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Old 14 July 2013, 08:40   #5
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Any filters in the fuel line?
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Old 14 July 2013, 08:43   #6
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Hi Oliver,

Sounds to me like there is possibly water in your fuel!
Do you have a water seperating filter? If you have drain it off and check your engine filter.
But definately could also be fuel starvation as the other guys are saying check all connections engine, tank etc to make sure.
I suppose me being on the waste coast of scotland just used to alot of water being in fuel.
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Old 14 July 2013, 09:55   #7
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Could be a spark plug on the way out. How many hours has the current plug set done....

It could be an injector starting to go.... Hopefully not though...
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Old 14 July 2013, 10:35   #8
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Fuel is the first thing I would look at. Vent open I would give the bulb a squeeze if it happens again and see if that cures the symptoms short term. If it does it could be air entering the system or a blockage or the bulb itself. Anything electrical would probably throw an alarm.
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