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Split Petcock Vacuum Hose

F

fishfarm

Forum Mentor
In the process of re-doing my carbs, I happened to notice the vacuum hose was split where it attaches to the carb. I presume this does not help.:rolleyes:
 
man that really sucks.

Get a new one.

no sure of the ID but any line rigid enough to be used as a vacumm line should suffice.
 
Hi,

From "Where Do These Hoses Go?":


The vacuum fitting is 6mm. Some 1/4" hose is too loose (1/4" = 6.35mm), but some brands are a little tighter and work fine. (NOTE: I found some 7/32" hose at the local Ace Hardware store that worked perfectly.)


Thank you for your indulgence,

BassCliff
 
Thanks, good information. I was somewhat surprised these connections did not have clamps. I may use some spare wire (I have even been known to use bread-tie wire on small hoses :p) to better secure this hose.
 
eww ties..... the fitment of the hose is such that it barely comes off when new. No ties needed. The things swell up and soften over time.

Get Thee a new one. Or just cut out the split part if you have enough slack.
 
You may not realize it, but you probably solved yourself a very big headache stumbling on that split line. I had a vacuum leak in my No. 2
Cylinder and found a small tube sticking out of the No. 2 sync port. Made a big difference in it running.
 
sedelen said:
You may not realize it, but you probably solved yourself a very big headache stumbling on that split line. I had a vacuum leak in my No. 2
Cylinder and found a small tube sticking out of the No. 2 sync port. Made a big difference in it running.
Click to expand...

Thanks. I was wondering how much of a difference that could make. I've suspected my problem to be primarily air leakage, but the new intake tubes and o-rings improved but did not solve the condition. The first 3 carbs I've stripped are in good condition, no blockages and the o-rings seem supple. I'm going to clean and replace them all anyway. Maybe this split vacuum tube will be the answer. We'll see this week.
 
With a leaky vacuum line you will never be able to sync the carbs
 
Make sure the new hoses (might as well replace the fuel line too) are not too long and kink when you put the tank back on. BTDT :o.

Edit: Nothing wrong with a clamp. Make sure you have the tool to remove the clamp in your on-board tool kit. Just in case....
 
BassCliff said:
Hi,

The vacuum fitting is 6mm. Some 1/4" hose is too loose (1/4" = 6.35mm), but some brands are a little tighter and work fine. (NOTE: I found some 7/32" hose at the local Ace Hardware store that worked perfectly.)
Click to expand...

Hey Cliff, is this measurement the same across the board? I need to replace my vacuum line on the 550T as well.

Thanks.
 
bonanzadave said:
Make sure the new hoses (might as well replace the fuel line too) are not too long and kink when you put the tank back on. BTDT :o.

Edit: Nothing wrong with a clamp. Make sure you have the tool to remove the clamp in your on-board tool kit. Just in case....
Click to expand...

Thanks, I had planned to replace the fuel hose while I had them both off and easy to get to.

I guess the question "to clamp or not to clamp" will depend on how well the new hose fits.
 
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