20 hp honda outboard 4 stroke

[monkey nuts]

hi all.
need some help with my honda i recently bought. its a 20 hp 4 stroke bf. it hadnt been used in about a year. when i bought it i started it and it turned over and idled fine. but once out on the water when ever i gave it a bit of gas it nearly stalls all the time. i got the motor serviced and got the carbi cleaned, also changed the fuel and made sure there were no air leaks in the fuel lines but the problem still persists. could it be the fuel pump or is it possibly something else?

 

[pvanv]

Re: 20 hp honda outboard 4 stroke

Could be a lot of things, but sounds like lack of fuel enrichment during acceleration. I would get a Factory service manual, and take things one at a time. You will need to know whether the compression is up to snuff, and whether you are getting good fuel delivery and spark. The manual should help you.

 

[iang]

Re: 20 hp honda outboard 4 stroke

Your motor has an accelerator pump,the plunger has more than likely siezed.Take off the air intake and look down the venturi whilst pumping the throttle and you should see a fine jet of fuel being sprayed towards the butterfly valve.If not,the plunger is located in the fuel bowl,try and soak in power tune or sea foam to loosen it.

 

[paullovelltownsend]

Re: 20 hp honda outboard 4 stroke

i have the same problem..it runs fine wide open ..and it idles.. as soon as i punch it.. it stalls .. would that be a pump problem as well ?

 

[eipeldau]

Re: 20 hp honda outboard 4 stroke

Yes, your problem is probably related to the accelerator pump, which has nothing to do with the fuel pump.
It can also be an obstruction in the primary ports(circuit in the carb responsible for low speed gas).
Either way, if you want to check it yourself, I suggest buying Honda's Carburetor Manual, which is great. It is sold by Helm Inc.

Good luck,

Henrique

 

[sdanville]

Re: 20 hp honda outboard 4 stroke

so monkey. What was the problem ?
My guess is spark plugs.

 

[davyd]

I recently got a Honda 20 hp 4 stroke outboard that has some issues, one is it has problem starting then when it eventually starts and runs for short while it shuts off.what do you think is causing this problem?

 

[GA_Boater]

Old thread - See this http://forums.iboats.com/forum/engin...92#post9144092

Please start a new thread. Look at the Help Tip at the top of the page.

 

[AndyF1900]

Honda 20 hp, What does it mean when the green light comes on when I start the engine and stays on?

 

[pvanv]

Really? It means good oil pressure...
RTFM.

 

[GA_Boater]

Honda 20 hp, What does it mean when the green light comes on when I start the engine and stays on?

Is it too much to ask not to post in old threads? And when you do, could you at least choose a topic related to the question you're going to ask? What does your oil light have to do with a fuel problem?

RTFR - Last R means RULES!

Closed.