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Author Topic: leaking carbs on my 75 cb550  (Read 1050 times)

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ajellis1

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leaking carbs on my 75 cb550
« on: May 15, 2008, 10:04:33 AM »
I have been chasing a fuel leak since i started riding. it started off on the #1 which turned out to be a stuck needle, then moved to #4 which i have no idea i took the bowl off a sprayed carb clean put it back together didn't leak, just the the #3 started leaking. took the whole carb bank off and striped and cleaned all 4 reinstalled then the leak moved to the #2 carb. by this point i am pulling my hair out. Any suggestions would be great. i have rebuild kits on the way.
« Last Edit: May 15, 2008, 10:07:07 AM by ajellis1 »
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Offline TwoTired

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Re: leaking carbs on my 75 cb550
« Reply #1 on: May 15, 2008, 10:25:45 AM »
Are you reusing 30 year old rubber gaskets?

Did you check your stand pipes for cracks?
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Lloyd... (SOHC4 #11 Original Mail List)
72 500, 74 550, 75 550K, 75 550F, 76 550F, 77 550F X2, 78 550K, 77 750F X2, 78 750F, 79CX500, 85 700SC, GL1100

Those that learn from history are doomed to repeat it by those that don't learn from history.

ajellis1

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Re: leaking carbs on my 75 cb550
« Reply #2 on: May 15, 2008, 11:19:00 AM »
I did reuse the gaskets the gas is leaking from the overflow. I looked at the stand pipes when i had all of the carbs apart not to say i looked really close but didn't see anything wrong. the thing that confuses me is that the problem traveled from carb to carb.
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Offline ger87410

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Re: leaking carbs on my 75 cb550
« Reply #3 on: May 15, 2008, 11:57:22 AM »
Float sticking??

Maybe it's time for a rebuild?
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ajellis1

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Re: leaking carbs on my 75 cb550
« Reply #4 on: May 22, 2008, 07:10:59 AM »
The floats are in good shape i am in the process of rebuilding will update when complete
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Offline Bodi

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Re: leaking carbs on my 75 cb550
« Reply #5 on: May 22, 2008, 01:55:45 PM »
(sound of can opener on worm can)
This may be crud in your gas. Little bits randomly stick in the float valves and cause overflow, then wash out after a while. An inline fuel filter in your gas line(s) solves it.
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ajellis1

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Re: leaking carbs on my 75 cb550
« Reply #6 on: June 20, 2008, 11:45:00 AM »
all has been solved i rebuilt all the carbs and the leak went away
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