Brand new Honda 5HP Outboard won't start - should I switch mfg? - Page 2 - SailNet Community
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post #11 of 25 Old 10-16-2012
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Re: Brand new Honda 5HP Outboard won't start - should I switch mfg?

The problem is the ethanoll fuel the misdirected and controlling government forces us to use.
Either switch to pure gasoline which is available at many stations now OR... use the ethanol crap gas and add an enzyme addititve to keep the ethanol from gelling.

The tiny jets and passageways in these outboards very easily get clogged with the inferior ethanol gas we are forced to use to pay off government corruption and payoffs for subsidies. Burning our food is a crime and the world hates America for it while they starve.
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post #12 of 25 Old 10-17-2012 Thread Starter
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Smile Re: Brand new Honda 5HP Outboard won't start - should I switch mfg?

Interestingly enough, what I eventually found out was the REAL problem, was that leaving the choke on for more than a few seconds after it started was fouling the plug. I've been using the motor for several months now, and the routine I use is to pull out the choke, start it, then push the choke all the way back in immediately while turning up the throttle a little bit to keep it running. In short order the motor warms up enough that I turn the throttle back down to minimal idle, then when I'm ready, I head out.

Per earlier advice I got on here, when I'm done for the day, I unplug the fuel hose and let the engine run until the carb runs out of fuel, and I ALWAYS close the breather vent on the fuel tank when it's not in use.

Using these two methods, my motor has run flawlessly all summer - but then again, it IS a Honda!
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post #13 of 25 Old 10-17-2012
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Re: Brand new Honda 5HP Outboard won't start - should I switch mfg?

The only outboards that I seem to be able to keep running year in and year out are old 2 strokes. They burn dirty gas, they burn water.
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post #14 of 25 Old 10-17-2012 Thread Starter
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Re: Brand new Honda 5HP Outboard won't start - should I switch mfg?

water? that's an amazing accomplishment - maybe even planet-saving! lol
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post #15 of 25 Old 08-10-2014
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Re: Brand new Honda 5HP Outboard won't start - should I switch mfg?

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..the routine I use is to pull out the choke, start it, then push the choke all the way back in immediately while turning up the throttle a little bit to keep it running. In short order the motor warms up enough that I turn the throttle back down to minimal idle, then when I'm ready, I head out..
Thanks Fish Dragon.
With my Honda 5h, I can usually get it running on full choke from a cold start with one or two pulls. But as soon as I reduce the choke even slightly from full choke the engine dies.

If I can keep it idling for long enough to get it warm, I can increase the throttle, and reduce the choke, and then it will run just fine, and it will stop and start all day.

But the problem is that if the motor does die after start up, it is very hard to start again. I only get one chance, or the thing is dead for an hour or so. Why is that??
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post #16 of 25 Old 08-10-2014
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Re: Brand new Honda 5HP Outboard won't start - should I switch mfg?

Did you check for an air leak? See if the carb is tight....could be a bad gasket... When an engine needs to be choked to continue running, it may indicate an air leak...after warming up and expanding the metal, the air leak may dissipate.

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post #17 of 25 Old 08-10-2014
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Re: Brand new Honda 5HP Outboard won't start - should I switch mfg?

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Did you check for an air leak? See if the carb is tight....could be a bad gasket... When an engine needs to be choked to continue running, it may indicate an air leak...after warming up and expanding the metal, the air leak may dissipate.
I could check, but the thing is both brand new and recently checked by a good outboard mechanic, so it seems unlikely that its an air leak.
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post #18 of 25 Old 08-10-2014
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Re: Brand new Honda 5HP Outboard won't start - should I switch mfg?

With all the 4 strokes, it is essential to observe certain practices :

Run the carb dry when you are finished for the day.

Put Stabil or similar in the gas.

Use only fresh gas. When the gas is more than a month or two old, put it in the car and buy some fresh stuff.

These practices will make the difference between a reliable ob, and a nightmare. Really.

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post #19 of 25 Old 08-11-2014
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Re: Brand new Honda 5HP Outboard won't start - should I switch mfg?

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But the problem is that if the motor does die after start up, it is very hard to start again. I only get one chance, or the thing is dead for an hour or so. Why is that??
I know this doesn't necessarily go with some of the other symptoms you described, but what you wrote above is classic behavior for an engine that has been flooded with gas. Is it possible that's happening?... too aggressive on the throttle too soon, too much choke or priming, or something like that?

I have no experience w/ 4 stroke outboards, so I'm kind of shooting in the dark..

Barry


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post #20 of 25 Old 08-11-2014
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Re: Brand new Honda 5HP Outboard won't start - should I switch mfg?

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Originally Posted by Photocurio View Post
Thanks Fish Dragon.
With my Honda 5h, I can usually get it running on full choke from a cold start with one or two pulls. But as soon as I reduce the choke even slightly from full choke the engine dies.

If I can keep it idling for long enough to get it warm, I can increase the throttle, and reduce the choke, and then it will run just fine, and it will stop and start all day.

But the problem is that if the motor does die after start up, it is very hard to start again. I only get one chance, or the thing is dead for an hour or so. Why is that??
These are classic symptoms of dirty carb jets that are fouled by the gummy slime from old and stagnant gasoline containing ethanol. The carb needs cleaning and the fuel should be replaced with fresh non-ethanol fuel. And the carb should be run dry after each motor use as described earlier in this thread.

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