Vacuum Leak
Thread Starter
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Cruiser
Joined: Jan 2008
Posts: 213
Likes: 1
From: The Suncoast (FLA)
Vacuum Leak
Hello
I believe I have a vacuum leak on my '99.
I replaced all the tubing from the carb to the EOS and the petcock, (all dry and cracked and somebody taped it) but the idle still likes to go high and hang there. Still poofs occasionally when coming in for a landing too.
Where else could it be leaking? I don't really want to hose it down with WD-40.
Or what else could manifest itself with those symptoms.
Still getting acquainted with (her/him) it. The Lady in Red. No, she won't do windows but she looks goooood.
Thanks
I believe I have a vacuum leak on my '99.
I replaced all the tubing from the carb to the EOS and the petcock, (all dry and cracked and somebody taped it) but the idle still likes to go high and hang there. Still poofs occasionally when coming in for a landing too.
Where else could it be leaking? I don't really want to hose it down with WD-40.
Or what else could manifest itself with those symptoms.
Still getting acquainted with (her/him) it. The Lady in Red. No, she won't do windows but she looks goooood.
Thanks
Thread Starter
|
Cruiser
Joined: Jan 2008
Posts: 213
Likes: 1
From: The Suncoast (FLA)
Thanks to all for the input.
I will go ahead and tear the carb off. I've wanted to see what other hacker mods it's previous owner made. I suspect it has larger jets and maybe the needle has been jacked-up.
I do agree that the rubber parts don't last forever, so I'm certain the advice is all good. I may do the diaphragm in the petcock while I'm at it.
The VOS.. is that mearly a set of switch contacts that open or close when vaccum is applied? Can it be checked with a VOM?
Thanks again for all the help.
I will go ahead and tear the carb off. I've wanted to see what other hacker mods it's previous owner made. I suspect it has larger jets and maybe the needle has been jacked-up.
I do agree that the rubber parts don't last forever, so I'm certain the advice is all good. I may do the diaphragm in the petcock while I'm at it.
The VOS.. is that mearly a set of switch contacts that open or close when vaccum is applied? Can it be checked with a VOM?
Thanks again for all the help.
Road Captain
Joined: Jun 2007
Posts: 531
Likes: 1
From: S.C.
You can check your VOES switch with a Ohm meter and vacuum pump.You need the vacuum pump to create the vacuum of 3.5 to 4.5 inches. The ohm meter should read zero when the vacuum is between these settings. If a higher (than 4.5 inches) or lower (less than 3.5 inches) value is required to to close the switch (zero reading) the switch needs replacing. You may also only need to replace the VOES hose, I believe HD sells this separately, as it may be cracked or worn out.
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Stage II
Joined: Nov 2016
Posts: 2
Likes: 0
From: N. Ferrisburgh, VT
How do poeple get around having all this stuff on their bikes if they want a clean looking bike tat still runs well do they install a switch to retard the timing for a short amount of time durring warm up. any thoughts on this? also what wires would need the switch?
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Road Warrior
Joined: Oct 2014
Posts: 1,610
Likes: 1,134
From: Southconsin
Start a thread or make a few posts if you need to. Then tell us what year and model Sportster you have. Pic?
Road Warrior
Joined: Oct 2014
Posts: 1,610
Likes: 1,134
From: Southconsin
Thanks to all for the input.
I will go ahead and tear the carb off. I've wanted to see what other hacker mods it's previous owner made. I suspect it has larger jets and maybe the needle has been jacked-up.
I do agree that the rubber parts don't last forever, so I'm certain the advice is all good. I may do the diaphragm in the petcock while I'm at it.
The VOS.. is that mearly a set of switch contacts that open or close when vaccum is applied? Can it be checked with a VOM?
Thanks again for all the help.
I will go ahead and tear the carb off. I've wanted to see what other hacker mods it's previous owner made. I suspect it has larger jets and maybe the needle has been jacked-up.
I do agree that the rubber parts don't last forever, so I'm certain the advice is all good. I may do the diaphragm in the petcock while I'm at it.
The VOS.. is that mearly a set of switch contacts that open or close when vaccum is applied? Can it be checked with a VOM?
Thanks again for all the help.