Clean carby

Hi,
Well I have changed the fuel hose and connections, cleaned the fuel filter. Still will only start once, next i will spray the car by with carboy cleaner, also change the fuel.
Any other suggestions?


bungeye's picture

Posts: 90

Date Joined: 10/06/09

what sort of engine is it mate

Thu, 2011-02-03 20:12

what engine mate

 

Posts: 926

Date Joined: 22/01/10

Tohatsu 55hp 2 stroke

Thu, 2011-02-03 20:17

It is a 55hp tohatsu 2stroke 1980's model

Posts: 1392

Date Joined: 08/01/09

have you tried feeding it more fuel?

Thu, 2011-02-03 20:45

the most of my probs with 2 strokes has either been not enough fuel or 2 much fuel. whip those plugs out for a look and either replace or clean. check your leads for cracks and with a plug in the end against the block for spark? Mabee check your fuel lines for splits or cracks where it might be dragging air in? There are probably other things that it could be that iam not suggesting! that will be $55 thanks. haha

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FEEEISH ONNN!!!

Tim77's picture

Posts: 29

Date Joined: 26/05/07

plugs

Thu, 2011-02-03 21:45

Hi mate , give the plugs a check and also make sure fuel is spraying in the carby, air sucking in the lines is a normal cause for that problem but you said ya covered that. fuel, spark and air. how does it idle when you first get it started?

Faulkner Family's picture

Posts: 18331

Date Joined: 11/03/08

 how about the breather on

Thu, 2011-02-03 21:58

 how about the breather on top of the tank. sometimes the simplest things can be the prob

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RUSS and SANDY. A family that fishes together stays together

Posts: 926

Date Joined: 22/01/10

Idles ok

Fri, 2011-02-04 06:10

It idles ok when it starts, the spark plugs get fuel on them. I will take off the covers and spray the carbys today, am going to replace the old fuel as well. Might even replace the tank, not sure how old it is. The bulb on the fitting that connects to the fuel tank is also small, one of the guys at BCF said you may need a bigger one as small one don't feed much fuel through?

fishy fingers's picture

Posts: 1719

Date Joined: 28/04/07

Hers a thought

Fri, 2011-02-04 07:12

why not get an outboard mechanic to look at it shouldnt cost much at least for a diagnosis. the bulb dosent feed fuel the engine sucks, the bulb is only for initial priming.

Posts: 926

Date Joined: 22/01/10

Outboard mech

Fri, 2011-02-04 07:12

I would but my budget is really tight at the moment, if I can't sort it myself it is going to sit in the drive way for a long time. Don't if I am getting ripped off, if they are charging to much.....

fishy fingers's picture

Posts: 1719

Date Joined: 28/04/07

Give arthur page a call

Fri, 2011-02-04 07:24

He'll give you an idea on cost and how much have you spent up to now? Arthur wont rip you off he's a top bloke...he only covers south of the river though

Posts: 926

Date Joined: 22/01/10

Spend about $250 so far

Fri, 2011-02-04 07:32

Had the starter motor serviced, some of the bushes needed replacing. Change the fuel hose and fitting and got some carby cleaner, will be changing the fuel next. The fuel has to be at least 4 months old if not more...
So yeah about $250 so far.

Posts: 93

Date Joined: 07/10/10

Sounds like a culmination of

Fri, 2011-02-04 08:07

Sounds like a culmination of things, so go with the simple ones first - they never cost much.

You said you pulled the plugs, they're fueled up ( wet/damp ) doesn't rule out a supply issue but it'd be down the list. Are the insulators in good condition ? Any rust anywhere ?

Leads, same as plugs, insulation good ? the conductor in the fitting look ok ? Rust/Corrosion ?

Fresh fuel ! Yeah Yeah we all do it, but trying to use stale fuel is certainly not helping. Is it blowing excessive smoke when it runs ? Is the mix a bit rich ?

 

 

Posts: 218

Date Joined: 15/01/10

Try this

Fri, 2011-02-04 09:24

Try this site

 

http://forums.iboats.com/forum.php  for repairs

 

also buy my parts from the US. about half the price for what they charge you here.

 

http://www.boats.net/

 

also maybe buy a manual for the boat motor. Do a search on ebay maybe cost about $10.

 

Basics to check- Compression, Spark and fuel.

For spark use a Spark tester. Anything else is a waste of time.

You really need to do a diagnostic using the manual cause it could be anything ie. like a charge coil that has a wire exposed due to rubbing.

 

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scottnofish's picture

Posts: 1621

Date Joined: 28/08/07

could be a sticky needle

Fri, 2011-02-04 09:39

in the carby  , have had the same problem before ,engine will only run for a short time as the needle wont let enough

fuel ito the bowl  just take the float chamber of the carby and check the needle isntt stuck in

Posts: 926

Date Joined: 22/01/10

She going yah!!!!

Fri, 2011-02-04 09:45

Well I sprayed some carby fuel cleaner into the opening, let it sit while I put the cover on. And you guessed it, she has started 4 times now.
Now the next question to let the fuel run dry after use or not.

scottnofish's picture

Posts: 1621

Date Joined: 28/08/07

if its 2 stroke

Fri, 2011-02-04 12:35

run it out of fuel when washing it  but only need to do it if you dont use it regulary other wise it leaves a build up of 2stroke oil in the carby after the fuel has evaperated