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Catalina/Capri 25/250 Sailor's Forums

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Honda outboard bizarre behavior

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Martin
Deckhand

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USA
16 Posts

Initially Posted - 09/24/2007 : 16:01:05

After 2 months of inactivity (due to my overseas travel) my 2002 Honda 8HP 4 stroke not only did not start at all no matter how much I pulled, but it also sucked out whatever air/fuel was in the fuel line to the point that the primer bulb on the fuel line collapsed and remained collapsed (squashed) as if there was vacuum in the line. This despite opening the gas tank and disconnecting the line from the motor and pushing in the steel ball valve at the end to equalize the pressure.

Anyone has any idea what is going on, and how to get my baby started?

I have never had any problem with the outboard before, no matter how long it sat. Thank you.

Edited by - on

delliottg
Former Mainsheet C250 Tech Editor

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USA
4479 Posts

Response Posted - 09/24/2007 : 16:05:38

Sounds like the vent in the top of the fuel tank is screwed shut, and you've simply pulled a vacuum on it. There should be a small thumbscrew on the top of the filler cap that you can undo to vent the tank.

Edited by - on

dlucier
Master Marine Consultant

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Virgin Islands (United Kingdom)
7583 Posts

Response Posted - 09/24/2007 : 16:57:10

Sounds like maybe there is someting wrong with the bulb.

Now, don't take this the wrong way, but, could it be possible the fuel line was reversed?...I apologize if I offended thee!

Edited by - dlucier on 09/24/2007 16:59:32

bear
Admiral

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USA
909 Posts

Response Posted - 09/24/2007 : 18:06:11

If you have the Honda fuel line/bulb I believe there is a check valve in the bulb that allows fuel pumped through the bulb to remain
in the carburator and fuel line past the bulb. Sounds like it may be stuck, also the bulb must be pointed straight up and down, if you follow the direction of the arrow on the bulb.

Edited by - on

Dave Bristle
Master Marine Consultant

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Djibouti
10005 Posts

Response Posted - 09/24/2007 : 18:40:16

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by bear
 ...also the bulb must be pointed straight up and down, if you follow the direction of the arrow on the bulb.<hr height="1" noshade id="quote"></blockquote id="quote">Never heard of that... The arrow shows the direction of flow. But clearly something is stuck in the line, presumably at the bulb. There is a "check valve" or flapper in one end of the bulb that makes it function. I'd say it's stuck, or it's backward.

Edited by - Dave Bristle on 09/24/2007 18:42:26

Arlyn Stewart
Master Marine Consultant

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USA
2980 Posts

Response Posted - 09/25/2007 : 08:40:51

I think Dave nailed it... the check valve in the bulb is stuck closed.

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dlucier
Master Marine Consultant

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Virgin Islands (United Kingdom)
7583 Posts

Response Posted - 09/25/2007 : 09:35:39

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by Arlyn Stewart
 I think Dave nailed it... the check valve in the bulb is stuck closed.
<hr height="1" noshade id="quote"></blockquote id="quote">

Hey! Dave restates what I said earlier (bad bulb), then gets the credit.

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delliottg
Former Mainsheet C250 Tech Editor

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USA
4479 Posts

Response Posted - 09/25/2007 : 10:04:51

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Dave Bristle: There is a "check valve" or flapper in one end of the bulb that makes it function. I'd say it's stuck, or it's backward.<hr height="1" noshade id="quote"></blockquote id="quote">

That's a much better answer than mine!

Edited by - on

Dave Bristle
Master Marine Consultant

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Djibouti
10005 Posts

Response Posted - 09/25/2007 : 10:18:36

Wisdom comes with age... although sometimes age comes alone.

Edited by - Dave Bristle on 09/25/2007 10:21:01

bear
Admiral

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USA
909 Posts

Response Posted - 09/25/2007 : 10:53:19

Dave, I do not have my Honda 8 owners manual at hand but I believe it says fuel bulb must be positioned straight up/down and the direction of the arrow pointing towards the engine....Nuff said....

Edited by - on

Dave Bristle
Master Marine Consultant

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Djibouti
10005 Posts

Response Posted - 09/25/2007 : 12:17:15

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by bear
 ...I believe it says fuel bulb must be positioned straight up/down and the direction of the arrow pointing towards the engine...
<hr height="1" noshade id="quote"></blockquote id="quote">I don't disbelieve it. I just never did it, nor do I know anyone else who did.

(My line went horizontally from the tank to the separater.) I guess they figure gravity will help open or close the flapper.

Edited by - Dave Bristle on 09/25/2007 12:18:02

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The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.