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Old 08 November 2020, 16:13   #1
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First outing fail

Hi, well took my new Sunsport 350 and Mercury
9.9 out today. Started the OB after a few pulls, set off out to go around Torbay varying the revs as per running in instructions, when after about 10 mins it didn't sound so good I could smell petrol and it conked out. There was an oily film in the water around the OB presumably petrol. It wouldn't re start so started rowing. Waited for 10 mins or so and it started after a few pulls. I stopped the OB for 2 mins silence and after it wouldn't start again so rowed it back to the slipway. I should have pressed the throttle only button and put throttle on full but forgot to put it on full throttle, it started at home first time when I did this. When flushing it out at home I took the cover off and petrol could be seen dripping from the bottom of the carb. It's been stored and transported properly anyone else had this problem or have I done something wrong. Its brand new. The sunsport was excellent when it was running.
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Old 08 November 2020, 17:49   #2
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This is either a leak from the carb drain plug, the fuel inlet or float bowl gasket... or it's a problem with the float not shutting off the fuel. In either case a job for the supplying dealer.

Vey frustrating but well done for getting back to the slipway.
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Old 08 November 2020, 17:55   #3
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Yes it is most likely a stuck float or a split float allowing the carb bowl to flood and petrol to come out of the overflow.

It could also possibly be a poor gasket on the carb bowl
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Old 09 November 2020, 01:39   #4
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Thanks for the replies, is this common on a brand new OB. I guess the problem wasn't caused by me then.
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Old 09 November 2020, 02:06   #5
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Thanks for the replies, is this common on a brand new OB. I guess the problem wasn't caused by me then.
This should absolutely not happen with a new outboard and is not common. Unless you have done something fundamentally stupid or taken it to pieces and reassembled it incorrectly I cannot see how it can be your fault. The laying it on the correct side is about the oil not petrol

When you pump the primer bulb generally you only need to give it a few pumps say up to 4 or 5 is generally plenty. Many small outboards don't need any pumping at all but unless you gave it many many pumps I would not think this is the issue
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Old 09 November 2020, 02:52   #6
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Hi, definitely laid on the correct side, pumped the bulb until firm. Not messed with it as brand new and wouldn't anyway as I'm mechanically useless. Waiting for response as had to email the shop as they are closed due to covid.
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Old 10 November 2020, 11:45   #7
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Returned the OB to the shop today although closed they let me return it today and will hopefully have it back Saturday.
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Old 10 November 2020, 12:15   #8
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Be interesting to hear what they tell you it was.
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Old 10 November 2020, 16:34   #9
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Be interesting to hear what they tell you it was.
Me too, I was all choked up reading the account.
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Old 11 November 2020, 03:27   #10
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Me too, I was all choked up reading the account.
Floods of tears?
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Old 11 November 2020, 04:56   #11
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Interestingly in the past few months I've dealt with one of this motor type where the float had distorted to go out of spec and cause over-fuelling... and had contact from a member suffering the same fault yet again on same motor where the dealer said a new carb was needed but I reckon a float/needle set would have sorted that one too.
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Old 11 November 2020, 13:06   #12
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I had a mower that did this ,dirty fuel was always the reason ,filter your petrol through a pair of the wifes old stockings (not fishnets ! )
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Old 12 November 2020, 06:47   #13
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Thanks for all the replies, I was touched by the two members who actually got upset about my predicament. Well guys blow your nose and wipe away your tears the problem has been solved. It was a faulty carb so will get it back on Saturday.
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Old 12 November 2020, 07:30   #14
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Thanks for all the replies, I was touched by the two members who actually got upset about my predicament. Well guys blow your nose and wipe away your tears the problem has been solved. It was a faulty carb so will get it back on Saturday.
Have they put on a new carb or just repaired it.

I am pleased you have it sorted... Try it first in a barrel of water just to be sure
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Old 12 November 2020, 07:42   #15
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They are waiting parts which should arrive Friday so guessing it's a repair, will post when I know for sure.
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Old 12 November 2020, 08:15   #16
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They are waiting parts which should arrive Friday so guessing it's a repair, will post when I know for sure.


How long have you owned it? Is it less than 30 days?
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Old 12 November 2020, 11:03   #17
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Thanks for all the replies, I was touched by the two members who actually got upset about my predicament. Well guys blow your nose and wipe away your tears the problem has been solved. It was a faulty carb so will get it back on Saturday.
Well done.

I think you'll find willk and myself were both having a little lightweight banter and play on words as is the way on here...

As in 'choke' and 'flood'[ed] in a carburettor fubar type context...



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Old 12 November 2020, 12:06   #18
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Yes I did realise Max, ;-)
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Old 12 November 2020, 12:23   #19
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How long have you owned it? Is it less than 30 days?
Hi, just under 30 days, I guess you are going to suggest asking for a new one, but the new one could have the same problem and I'm happy that the repair will be good. I get your point though.
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Old 12 November 2020, 14:05   #20
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Hi, just under 30 days, I guess you are going to suggest asking for a new one, but the new one could have the same problem and I'm happy that the repair will be good. I get your point though.


Youíre entitled to a refund or a replacement. Iíd have gone for the replacement rather than one thatís been ďviolatedĒ
Just my 2 penneth.
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