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Old 23 August 2013, 08:41   #1
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Should I run engine dry after use?

Hi

Thanks everyone for answering my earlier questions - I'm learning a lot from this forum and really appreciate your help!

I have another quick question that I'd like your opinion on...

Should I empty my engine of fuel (a 2006 15hp Mariner 2 stroke) after each use by disconnecting the fuel supply and running the engine until it stalls? The guy I bought the engine from recommended that I do this however I've read one or two threads elsewhere that suggest this could do damage to the engine?

The engine needs to be transported, on it's side, in the boot of my car before and after each use so emptying the fuel from it seems to make sense to me (as wouldn't I run the risk of petrol leaking into my boot otherwise?).

Just wanted to check whether this would do any damage to the engine??

Thanks in advance!

Ian
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Old 23 August 2013, 08:57   #2
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After spending the summer going to and fro with same engine to an engineer and being told all its problems were due to problems with old fuel in carbs, even after being cleaned,The advice I received was to disconnect and run and empty as much fuel from the carb as possible to prevent varnishing and gunge in jets. Although it does seems to be the default answer to many two stroke starting and running problems. If it does any good do it as you don't want a wasted summer like me.
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Old 23 August 2013, 09:05   #3
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ALWAYS run mine dry, never had a problem ! (2003 15hp Mercury 2 stroke).

Welcome, I hope you like dry humour.......
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Old 23 August 2013, 09:43   #4
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It's a good idea to empty the carbs after use, however I don't know if running it lean on fuel for that short period would damage the engine.

Some engines have a drain tap but not many, although you might be able to fit one

May be the 15hp rnli engines have a drain?
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Old 23 August 2013, 10:07   #5
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I used to just run them dry in the test tank, and drain the carb and fuel line/s
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Old 23 August 2013, 10:55   #6
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And the other side of the coin.... for 40yrs plus I've never bothered to run one dry and I've not suffered starting issues over a whole load of makes/sizes.
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Old 23 August 2013, 10:56   #7
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If you have a dry-break fuel connector (the kind with the pin and ball on both sides), disconnecting and running til it dies won't do much. It'll die when a vacuum forms in the fuel line, rather than when the float bowls go dry.

jky
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Old 23 August 2013, 12:34   #8
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Quote:
Originally Posted by jyasaki View Post
If you have a dry-break fuel connector (the kind with the pin and ball on both sides), disconnecting and running til it dies won't do much. It'll die when a vacuum forms in the fuel line, rather than when the float bowls go dry.

jky
I usually push a plastic golf tee in the end to stop the air lock .
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Old 23 August 2013, 12:57   #9
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I run my engines until they stall..when Im home and flushing them in the water tub. Two generations of my family have done this.. with no ill effects.

I generally strip the carbs during winter storage and have never found any signs of two stroke oil varnish or gunk in them.

However ... I often have the smell of petrol in my car though..but as I dont smoke any more ..it doesn't really bother me :-D
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Old 23 August 2013, 13:18   #10
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I have always done this too, never had a problem from it!
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