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Author Topic: PD46A very slow carb leak #3  (Read 440 times)

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Offline jakec

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PD46A very slow carb leak #3
« on: July 15, 2021, 08:34:48 PM »
Just tested these carbs on the table for leaks since I’ve been chasing a elusive slow leak from #3. Switched float and needle to #4 and rechecked height. Now is POURING out like a squirt gun. I’ve had this happen before and it went away and now it’s back. Floats are set precisely at 14.5mm. Here’s a pic of my setup.

Edit: just chasing the slow leak now
« Last Edit: July 15, 2021, 09:14:42 PM by jakec »
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1970 CB750 K0
1977 CB750 Chop
1997 XR650L

Offline jakec

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Re: PD46A carbs SPRAYING fuel out of idle circuit
« Reply #1 on: July 15, 2021, 09:11:20 PM »
Ok I figured it out. Setting the carbs down like that blocked off the overflow the pressure differential forced the fuel out the idle circuit because air wasn’t able to leave the bowl. Bieber I’m still chasing this slow leak at #3. I think it maybe the bowl. But there are no visible cracks in the drain tube.
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1970 CB750 K0
1977 CB750 Chop
1997 XR650L

Offline tlbranth

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Re: PD46A very slow carb leak #3
« Reply #2 on: July 16, 2021, 05:23:44 PM »
Check your float tang for a dimple
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1970 CB750 K0
1975 GL1000
1999 GL1500
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Offline jakec

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Re: PD46A very slow carb leak #3
« Reply #3 on: July 22, 2021, 12:20:31 PM »
I tested for leaks again using a solvent instead of water and it did leak. So I am going to repair with solder.
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1970 CB750 K0
1977 CB750 Chop
1997 XR650L
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