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Old 10 June 2012, 07:58   #1
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Outboard probs

Hi friends,
It's been a while!

I had my Mariner Marathon 25hp 2-stroke serviced about 6 weeks ago. It's been out several times since then, the last time on Monday, with no issues.

Today (Sunday), I returned home from my hols with the boat and attempted to flush the engine. It will run only for about 2-3 seconds then cuts out. If I crank the revs, it will keep going, but seems to be backfiring every couple of seconds.

Any ideas? I can't imagine it being old/contaminated fuel as it's so recent since it was used.

Tim
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Old 12 June 2012, 06:30   #2
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Tim,

On muffs it will sound like it permanently backfiring - I assume it's a 2 cyl machine as well - that's the noise they make! I've had three two cyl machines of various horsepowers, and they all make the same atrocuious random sounding din when out the water!

As for the cutting out - if you are literally talking a couple of seconds, are you possibly throttling back more quickly from a cold start than you might if it was in the water & being quiet as opposed to on your front path doing 600 dB and waking everyone in a 10 mile radius? I have just realised I never posted the pic of my "flush muuffler" which basically lets me run on muffs at the sort of noise levels I get in the water. Will try to remember to dig it out tonight.
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Old 12 June 2012, 08:24   #3
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Originally Posted by 9D280
Tim,
I have just realised I never posted the pic of my "flush muuffler"
I fear a spoonerism may lead us to the bilges here ( does it say douche on the box?)
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Old 13 June 2012, 04:23   #4
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I fear a spoonerism may lead us to the bilges here ( does it say douche on the box?)
Hmmm, "Mush Fluuffler" Weren't they ladies who worked on art films for discerning gentlemen? I believe they used to prepare the male actors for their starring roles. I'm not sure what they've got to do with 2 stroke outboards though, unless that's a euphemism for.........
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Old 13 June 2012, 06:47   #5
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I'd check your fuel anyway, even a small amount of water can cause problems once it's in the carbs.
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