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25 June 2014, 17:35
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#1
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RIBnet supporter
Country: UK - England
Town: Accrington
Length: no boat
Join Date: Oct 2012
Posts: 451
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Starting problem Mariner 25hp 2str.
Hi All,
Just back from a fantastic 10 days camping and sibbing at Shell Island (Wales) but I have a strange starting problem after the engine has been run and tilted for more than 15 minutes (just a estimate as it will start ok if it has only tilted for a couple of minutes) without running the carb dry.
Basically its a real P.I.T.A. to get re-started, no fun when trying to hold the sib in the surf, it always starts first pull if it has been run dry and re primed but I do not like to risk running it dry when trying to beach it without being swamped.
Any ideas/tips? or is it something that I will have to live with, or try to guesstimate disconnecting the fuel line on the run in and hope for the best.
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28 June 2014, 13:34
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#2
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Member
Country: UK - England
Length: no boat
Join Date: Jun 2014
Posts: 4
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Carb strip. Sounds like it is flooding. Possible could do with a new float valve.
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28 June 2014, 21:20
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#3
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RIBnet supporter
Country: UK - England
Town: Accrington
Length: no boat
Join Date: Oct 2012
Posts: 451
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Quote:
Originally Posted by diver12
Carb strip. Sounds like it is flooding. Possible could do with a new float valve.
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Thanks for the reply, I will have a look at the float valve but it is only hard to re-start after it has been tilted for 15mins or so without running it dry, every other time it starts 1st or 2nd pull.
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29 June 2014, 00:27
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#4
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Member
Country: UK - England
Town: Bristol
Boat name: Salty Cheeks
Make: Honwave
Length: 3m +
Engine: 20hp 2stroke Mariner
Join Date: Mar 2014
Posts: 485
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Quote:
Originally Posted by bartiny
Thanks for the reply, I will have a look at the float valve but it is only hard to re-start after it has been tilted for 15mins or so without running it dry, every other time it starts 1st or 2nd pull.
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Hi All
Have you tried jubilee clips on fuel line and how old is the priming bulb, you may have loose clip, how old is the engine
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29 June 2014, 19:31
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#5
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RIBnet supporter
Country: UK - England
Town: Accrington
Length: no boat
Join Date: Oct 2012
Posts: 451
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Quote:
Originally Posted by dave3235
Hi All
Have you tried jubilee clips on fuel line and how old is the priming bulb, you may have loose clip, how old is the engine
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The fuel supply side is all ok, primer bulb good condition, engine is mid 80s and in very good condition.
Looks like I will just have to live with it, just thought that someone might have had the same issue and had a specific proceedure to re-start.
Thanks for the reply
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02 July 2014, 16:37
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#6
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Member
Country: UK - England
Town: Bristol
Boat name: Salty Cheeks
Make: Honwave
Length: 3m +
Engine: 20hp 2stroke Mariner
Join Date: Mar 2014
Posts: 485
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Quote:
Originally Posted by bartiny
The fuel supply side is all ok, primer bulb good condition, engine is mid 80s and in very good condition.
Looks like I will just have to live with it, just thought that someone might have had the same issue and had a specific proceedure to re-start.
Thanks for the reply
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Hi Have you tried carburetor fuel line cleaner mixed with fuel Redex does one 60ml in 11ltr fuel with your two stroke, try a couple of times also cleans pistons and rings.
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02 July 2014, 19:01
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#7
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Member
Country: UK - Scotland
Town: Fort William
Make: Ribcraft 585
Length: 5m +
Engine: Yamaha F115
Join Date: Mar 2012
Posts: 2,896
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Have you tried pumping the primer after its been tilted a while?
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There is a place on this planet for all of Gods creatures.........right next to my tatties and gravy.
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02 July 2014, 19:02
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#8
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Member
Country: USA
Town: Seattle
Boat name: Water Dog
Make: Polaris
Length: 4m +
Engine: Yamaha 60hp
Join Date: Apr 2007
Posts: 1,152
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Quote:
Originally Posted by diver12
Carb strip. Sounds like it is flooding. Possible could do with a new float valve.
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IMHO... This is it ^^^
Fuel leaking in due to sticky float valve.
There's nothing procedurally to do except fix it.
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01 October 2014, 09:22
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#9
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RIBnet supporter
Country: UK - England
Town: Accrington
Length: no boat
Join Date: Oct 2012
Posts: 451
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Just an update on this issue;
After a recent couple of weeks at Redcliffe farm Nr Pool I had a few opportunities to try different start procedures (after it had been run and tilted), and it turns out that I have to pull the choke as if I were starting it from cold for it to start within 2 pulls.
So procedure it was.
Thanks for all the suggestions.
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01 October 2014, 10:59
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#10
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Member
Country: UK - England
Town: Cambridgeshire
Boat name: Nimrod II
Make: Aerotec 380
Length: 3m +
Engine: Yam 15 Tohatsu 9.8
Join Date: Nov 2007
Posts: 8,308
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Missed this thread first time round but I've experienced similar with a mid 80s Mariner 20 on a grp boat we had.
From cold it was a reliable second/third pull start and hot it was a first pull start... but leave it more than 10/15 mins and it would need half choke to start.
Because you are usually in the situation of needing a reliable start (if only to impress onlookers) it was human nature to be wary of flooding the engine by using choke after such a short time stopped so many times I'd pull it over loads of times with no choke.
It was well serviced / set up and otherwise ran really well so once I realised the procedure I needed after short stops I didn't investigate further.
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