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 Post subject: Carbs wont stop pi$$ing out fuel..........
PostPosted: Thu Jun 14, 2018 3:28 pm 
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Joined: Tue Jan 23, 2018 5:37 pm
Posts: 12
Just trying to finish off the 500, but the carbs wont stop pi$$ing out fuel, despite them being fully rebuilt with new shut off valves, and the float height set to 24mm, as per the revision..............


PLEASE HELP!


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 Post subject: Re: Carbs wont stop pi$$ing out fuel..........
PostPosted: Thu Jun 14, 2018 4:48 pm 
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Joined: Sat Feb 04, 2012 7:36 am
Posts: 2439
Location: Eastern Ontario Canada
The only way a carb can piss fuel is if the float valve isn't working properly or the float height is too high. Time to open one up and see what's going on.

I suppose there is one other way and that is if the drain valve is left open, but there is an obvious difference in where the fuel is pissing out.

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 Post subject: Re: Carbs wont stop pi$$ing out fuel..........
PostPosted: Fri Jun 15, 2018 8:34 am 
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Joined: Thu Nov 17, 2005 7:12 am
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Location: Leicestershire, UK
Did you use OEM or Mikuni float valves and seats ?

Did you check the fuel level in each carb as per the service manual ?

Cheers
Paul


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 Post subject: Re: Carbs wont stop pi$$ing out fuel..........
PostPosted: Mon Jun 18, 2018 7:22 am 
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Joined: Tue Jan 23, 2018 5:37 pm
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New shuts used altho kit original Mikuni ones.

Float heights set to 24mm.....just checked float height using the pipe up the side method and it is showing flat heights are too high...

So 24mm is not high enough then....


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 Post subject: Re: Carbs wont stop pi$$ing out fuel..........
PostPosted: Mon Jun 18, 2018 8:25 am 
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Joined: Thu Nov 17, 2005 7:12 am
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Location: Leicestershire, UK
Trig wrote:
New shuts used altho kit original Mikuni ones.

Float heights set to 24mm.....just checked float height using the pipe up the side method and it is showing flat heights are too high...

So 24mm is not high enough then....


24mm is roughly correct - can you confirm that you have measured the float height as described in the manual ? The adjustment tang must only just touch the valve - the weight of the float must not bear on it - so you angle the carbs to achieve this.

Good - luck - it’s a miserable process !!

Cheers
Paul


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