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Go Back   SailNet Community > On Board > Gear & Maintenance > Engines > Outboard > Brand new Honda 5HP Outboard won't start - should I switch mfg?
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Thread: Brand new Honda 5HP Outboard won't start - should I switch mfg? Reply to Thread
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Topic Review (Newest First)
08-16-2014 04:18 PM
ovb
Re: Brand new Honda 5HP Outboard won't start - should I switch mfg?

I have a Honda 2hp that I use on my 23ft. Santana and it works great to get me in and out of the slip. When I first got the motor it was new and was difficult to start and then I put on a dingy and went fishing with it for a day, I ran the motor at different speeds for 5 hours and the change in its behavior has been great...now cold start is fuel on take the sail and tiller covers off open the throttle a little, apply full choke and pull the starter rope its running at approx. 1/2 pull...slowly push the choke in and its running smooth...I think that these things are built so well that they need to be ran to loosen them up...I had a old Johnson 4.5 prior to the Honda and put approx. the price of the new 2hp into it in parts and it was still a pile of crap.
08-13-2014 07:48 PM
dabnis
Re: Brand new Honda 5HP Outboard won't start - should I switch mfg?

I have had two four stroke outboards, plus 8 two strokes. One was a Honda 2HP, ran it hard for 30 years. It ran perfectly when I sold it. One time I forgot to drain it, carb cleaning time, my fault. Never had any problems with all the two strokes.

From what I have read, carb related problems are not limited to Honda, they seem to related to many/most four strokes, especially the smaller ones.

Paul T
08-13-2014 02:12 PM
thereefgeek
Re: Brand new Honda 5HP Outboard won't start - should I switch mfg?

Can't beat a Honda for reliability, but they're pretty picky about their fuel. Water in the gas is a bad thing for these finicky little outboards.
We have a '97 9.9 on our inflatable and it still starts on 2nd pull every time, but we usually run it at least few times each week. Otherwise, I've read that draining the fuel bowl is helpful in you're not running it for a couple weeks. We also add a measured amount of fuel stabilizer (like StaBil or something similar) with each full tank of gas.
08-11-2014 05:19 PM
dabnis
Re: Brand new Honda 5HP Outboard won't start - should I switch mfg?

Old thread but some recent replies. I have a 6HP 4 stroke Tohatsu, runs perfectly. HOWEVER, it is "finicky" to start. I drain the carb after each use as "running it dry" still leaves some fuel in the bowl. I have to follow the starting instruction EXACTELY. I have found that squeezing the primer bulb too much floods it. Many pulls later, with the choke off, it fires. This morning, it fired on the third pull.

I have been using this additive for many years, seem to work. :

Fuel Additives / Treatments | Berryman Products

Paul T
08-11-2014 11:21 AM
MarkSF
Re: Brand new Honda 5HP Outboard won't start - should I switch mfg?

Although everyone likes to blame ethanol, here are a couple of facts :

Non-ethanol gas leaves a residue when it evaporates.

I've been running ethanol gas in my outboards for years, with no problems - due, I believe to using the above good practices.

This is a brand new outboard, so there will be no material compatibility issues.
08-11-2014 10:46 AM
fryewe
Re: Brand new Honda 5HP Outboard won't start - should I switch mfg?

Quote:
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.
08-11-2014 09:44 AM
bblument
Re: Brand new Honda 5HP Outboard won't start - should I switch mfg?

Quote:
Originally Posted by Photocurio View Post
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
08-10-2014 11:39 PM
MarkSF
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.
08-10-2014 06:50 PM
Photocurio
Re: Brand new Honda 5HP Outboard won't start - should I switch mfg?

Quote:
Originally Posted by chrissailorman View Post
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.
08-10-2014 06:47 PM
chrissailorman
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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