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Old 27 July 2010, 03:09   #1
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Well i got it

Well picked up 20hp mariner yesterday,bit of a bugger to start ,i reckon it had been laying about a bit,as in not started in a while ,very smokey and only working on one cylinder to start with,a few tweeks here and there started and chucked it in gear soon emptied the bin of water,pee pipe was fine, pissing out,got manuel ,primer bulb and tank small tool kit with it 300 ,i thought a good price,small bit of petrol in the tank,wondered if it had a wee bit too much oil,as i say very smokey,calmed its self down,sounded loverly 1980's,so gonna be a little smokey,plus in a bin of water hard to get rid of ,just circulates,hope i have brought a good one ,,,,,,,,,,,,,,,,,,,,NOS,where are you mate? what are your thoughts and anyone elses for that matter,have i done well?,,,,,,Thorney
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Old 27 July 2010, 06:41   #2
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fresh petrol and correct oil mix clean /gap plugs and a good high speed run should cure it ,,
problem with running on the hose or in a tank of water is that the engine wont get much load on it causing oiling up of the cylinders, unless you have a very large tank that you can run the engine in gear and get some decent revs on it .
you dont know how old the petrol was or how much oil the last person putting in the mix,
Think i would put a new impeller in too ,at least have a look at it before serious use at sea
mart
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Old 27 July 2010, 07:10   #3
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fresh petrol and correct oil mix clean /gap plugs and a good high speed run should cure it ,,
problem with running on the hose or in a tank of water is that the engine wont get much load on it causing oiling up of the cylinders, unless you have a very large tank that you can run the engine in gear and get some decent revs on it .
you dont know how old the petrol was or how much oil the last person putting in the mix,
Think i would put a new impeller in too ,at least have a look at it before serious use at sea
mart
dont know how old the petrol was or how much oil the last person putting in the mix,Yes you be right Mart ,recently been put in the impellor,was a little worring when only firing up one cylinder.he heated up the spark plug,don t want to do that each time,but well could be the petrol mix.got to get a stand to fire it up and have a play about
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Old 27 July 2010, 07:17   #4
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dont know how old the petrol was or how much oil the last person putting in the mix,Yes you be right Mart ,recently been put in the impellor,was a little worring when only firing up one cylinder.he heated up the spark plug,don t want to do that each time,but well could be the petrol mix.got to get a stand to fire it up and have a play about
sounds like a new set of plugs wouldent go amiss either .
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Old 27 July 2010, 07:58   #5
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sounds like a new set of plugs wouldent go amiss either .
Arh nothing two serious then,i say was running so i will get some plugs many thanks Mart
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Old 27 July 2010, 09:03   #6
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dont know how old the petrol was or how much oil the last person putting in the mix,
Yeah, a lot of people go down the "and add a bit extra oil to be safe" route...... The guy I got my rib from told me he accurately measured it....... then added another 50ml to be safe!
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Old 27 July 2010, 10:32   #7
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Yeah, a lot of people go down the "and add a bit extra oil to be safe" route...... The guy I got my rib from told me he accurately measured it....... then added another 50ml to be safe!
Crikey i bet that was blowing smoke signals,lol,just lifted it up on to a work bench,black n decker type thing,bloody heavy on your own,thought better of it tho,i tied the bench tight to the line post,dont trust the bench wood tho doubled it up but only screwed on so need to bolt on a sturdy thick peice of timber,very frustrating as i wanna play with it,lol,have to get a proper stand now,doh more money,lol and of course a sack barrow to move it
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Old 27 July 2010, 11:27   #8
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as 9D280 says getting the correct oil mix helps , though if you are only cruising and not running at w.o.t for hours on end ,,a tad less oil is sometimes better than a tad too much as most engine manifacturers will go on the go on the extreame side of things to cover themselves .
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Old 27 July 2010, 12:27   #9
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if you are only cruising and not running at w.o.t for hours on end ,,a tad less oil is sometimes better than a tad too much as most engine manifacturers will go on the go on the extreame side of things to cover themselves .
I'll second that, the post didn't specify if previous owner "accurately measured" his mix and added extra 50 mm to each gallon or to a full tank, if per gallon, was adding 75% more as you only need 80 mm oil per gallon to have a 50:1 mix ratio. if using good quality 2 strokes oil, no need to add any extra than factory recommended, plugs will last longer and engine will smoke much less.

Happy Boating
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Old 27 July 2010, 13:00   #10
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with my 3.3 mariner i put in 100mm of TCW oil to 5 litres of petrol, ,should i do the same for the 20?
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