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carb leaking badly

  #1  
Old 01-05-2018, 12:57 AM
gorn's Avatar
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Default carb leaking badly

Hey guys

I got myself a set of carb sync gauges, as the idle was pretty rough, up to 3k rpm.

When getting a screw driver in there to make adjustments, if the driver even slightly pressed on the carb bank joiner?? (I have no idea what its called lol)
fuel would come out quite quickly. Enough to pool on the ground within maybe 5 seconds.

See pic. Red is the part that leaks. Yellow arrows show where the screwdriver goes to adjust the sync of the carbs.

Anyone else ever had fuel leak from there?

I have to pull the carbs off, as the adjuster for No1 carb is not moving freely for adjustment.

I'm sure I'll have a better idea of what to do when their off, but its pretty worrying that light pressure pumps fuel out.
God help me if I'm riding and it gets on the hot headers :/



These are not my carbs (filthy), just using a google pic to illustrate
 
  #2  
Old 01-05-2018, 02:09 AM
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Hi, have a look at this and see which Orings/jointers you might need ,
Fowlers UK
https://www.fowlersparts.co.uk/parts...arburetor-assy
Partzilla USA
https://www.partzilla.com/catalog/ho...arburetor-assy
Not an easy job to separate the carbs ,so take a few pictures as you go along
 
  #3  
Old 01-05-2018, 06:17 AM
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What CaBaRet says. Pretty positive it's the o-rings. It is a fairly common issue. He is also right in his thoughts of taking pictures along the way. It's not an overly hard thing to do, just lots of pieces. Pay special attention to the little springs that go in between the adjustment plates. That is where you were you were when you turn the screws when attempting to sync. Those springs have been kmown to fly all over.the place
Not that I have been on my hands and knees.looking for them before.....
 
  #4  
Old 01-05-2018, 09:36 AM
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thanks for the replies guys

Fowlers is VERY expensive lol.
Partzilla is half the price. Thanks for the link.

So this is what I need... the O'rings


 
  #5  
Old 01-05-2018, 09:49 AM
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That should do it, unless the t-joint itself is cracked. but my money is on the o-rings.
 
  #6  
Old 01-05-2018, 09:59 AM
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Joints look OK.
There's no fuel coming from them, just from the sides where the O'rings are.

I found this Honda CBR600 Carburettor Kits
They make kits in Viton. A kit for pretty well all I need is only $25 Australian.
Will place an order next week.

As for the fitting, I think I will be dropping that handful with my mechanic lol.
Would be good for them to have a proper full clean while he's at it.
Some things Im happy to do to save money.
But 2 things I hate....carbs....& wiring

Thanks for the help guys
 
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