Reply
 
Thread Tools Search this Thread
 
Old 14 December 2013, 07:49   #11
Member
 
Locozodiac's Avatar
 
Country: Other
Town: Lima-Peru
Boat name: Nautile
Make: Sea Rider Boats
Length: 4m +
Engine: Tohatsu 18 /30 HP
Join Date: Sep 2007
Posts: 1,706
The gap must be 1.0 mm gap closed tight. If engine drowns in excesive fuel when trying to start repeatedly, remove plug and light it with a match and sing along Happy Birthday Plug, put it back, engine should start inmediately.

Are you using the external or internal fuel tank, the fuel/oil ratio is 50:1 not 100:1, that ratio will probably riun the entire engine specially running from medium to full throttle.

Happy Boating
__________________

__________________
Locozodiac is offline   Reply With Quote
Old 14 December 2013, 10:24   #12
Member
 
SimonCh's Avatar
 
Country: UK - Scotland
Town: Stonehaven
Boat name: Sunday Best
Make: Tornado
Length: 5m +
Engine: Yammy 90
Join Date: Mar 2011
Posts: 236
Thanks all! Screaming new born meant that I didn't get a chance to look today! There's always tomorrow! Shall add some more 2 stroke oil!

Sparta - I've ordered a plug off amazon, but thanks for the offer, we really must get out for a blast sometime like we keep saying!

Si
__________________

__________________
I think i'll buy a boat*

*I think i'll buy a boat and then spend the rest of my life trying to afford to keep it
SimonCh is offline   Reply With Quote
Old 14 December 2013, 14:01   #13
Member
 
Country: UK - England
Length: 3m +
Join Date: Sep 2008
Posts: 2,251
Quote:
Originally Posted by Locozodiac View Post
If engine drowns in excesive fuel when trying to start repeatedly, remove plug and light it with a match


Make sure you after you've lit it in case there is any fuel or anthing else around that might go bang

Oh and do on your insurance...

If you'd rather be safer... turn the engine a few times with the plug out. Fuel will spread over the surface inside the cylinder. Larger surface = faster evapouration. Go make a coffee... The try again...
__________________
ShinyShoe is offline   Reply With Quote
Old 18 December 2013, 10:28   #14
Member
 
SimonCh's Avatar
 
Country: UK - Scotland
Town: Stonehaven
Boat name: Sunday Best
Make: Tornado
Length: 5m +
Engine: Yammy 90
Join Date: Mar 2011
Posts: 236
right....

I have taken the carb off, and all seems well. I split the fuel pump, and again - all seems well in there.

when i turn it over with the plug out, it throws out a massive amount of fuel!

New plug isnt any better, so really dont know where to go from here! any ideas welcome!

thanks

Si
__________________
I think i'll buy a boat*

*I think i'll buy a boat and then spend the rest of my life trying to afford to keep it
SimonCh is offline   Reply With Quote
Old 18 December 2013, 11:28   #15
Member
 
Country: UK - Wales
Town: Ebbw Vale, Gwent
Boat name: Seabay
Make: Avon, Bonwitco
Length: 3m +
Engine: 4,25,35 Johnsons
Join Date: Feb 2010
Posts: 172
I would be getting hold of a Compression tester next. Making sure the piston rings or bore are not damaged. Easy test to do. Values should be found in the manual.
__________________
Seabay is offline   Reply With Quote
Old 18 December 2013, 14:23   #16
Member
 
spartacus's Avatar
 
Country: UK - Scotland
Town: Aberdeenshire
Boat name: Sula
Make: Ribcraft 4.8m
Length: 4m +
Engine: Tohatsu 60hp + aux
MMSI: 235087213
Join Date: Jun 2007
Posts: 3,268
RIBase
Does it sound like it's going to take at all, as in fire into life, or does it simply refuse to catch?

Can I also check there's no safety lanyard with a Twatsoo 5hp?

It's getting fuel evidently, and you've fitted a new spark, what about air? Breather valve you've checked already and is open?
__________________
Is that with or without VAT?
spartacus is offline   Reply With Quote
Old 18 December 2013, 14:48   #17
Member
 
SimonCh's Avatar
 
Country: UK - Scotland
Town: Stonehaven
Boat name: Sunday Best
Make: Tornado
Length: 5m +
Engine: Yammy 90
Join Date: Mar 2011
Posts: 236
not even offering to start! Kill chord is in, and i've checked the continuity, i get no reading when its connected and get continuity when the chord is out or vice versa, cant remember which, but its working anyway!

I've checked the carb and the butterfly valves seem to be working nicely

How much fuel should spit out when cranking with no plug in?
__________________
I think i'll buy a boat*

*I think i'll buy a boat and then spend the rest of my life trying to afford to keep it
SimonCh is offline   Reply With Quote
Old 18 December 2013, 17:43   #18
Member
 
m chappelow's Avatar
 
Country: UK - England
Town: yorkshire
Boat name: little vicky
Make: avon ex RNLI
Length: 3m +
Engine: tohatsu
Join Date: Mar 2008
Posts: 2,310
How about float valve in the float chamber on the carb sticking open & not shutting off fuel when its full, Or choke not operating in the right position ?
__________________
m chappelow is offline   Reply With Quote
Old 18 December 2013, 23:27   #19
Member
 
Peter_C's Avatar
 
Country: USA
Boat name: Uh...a kayak?
Length: 4m +
Join Date: Dec 2009
Posts: 1,485
Quote:
Originally Posted by SimonCh View Post
How much fuel should spit out when cranking with no plug in?
In reality none. That small of a motor doesn't take much fuel to run.

You might try turning the fuel off (Or pinching the fuel line closed) and putting a small shot of ether into the motor and see if it starts. Ether has just a little lube in it to protect the motor, and will fire of quickly.

Opening the throttle up takes away engine vacuum and allows a flooded motor to clear up by not drawing more fuel into itself.
__________________
Peter_C is offline   Reply With Quote
Old 19 December 2013, 05:57   #20
Member
 
Country: UK - England
Town: Dorset & Hants
Boat name: Streaker/Orange
Make: Avon/Ribcraft
Length: 4m +
Engine: 50Yam/25 Mariner
Join Date: Apr 2007
Posts: 5,551
Does sound like it's hugely flooded...?
__________________

__________________
PeterM is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 21:58.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.