Hose from top of front cylinder goes to? - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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\ From the radiator, through the case and out
the exhaust. If it has to do with the cooling,
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post #1 of 34 (permalink) Old 09-22-2017, 05:38 PM Thread Starter
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Hose from top of front cylinder goes to?

Having trouble getting a Vulcan 700 1985 close to finishing rebuilding. Redid the carbs and got bike running. Where does the hose from the top of the front cylinder go to? Had everything back together and all my radiator fluid "spewed" out. Can't find anywhere that hose should reconnect to.
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post #2 of 34 (permalink) Old 09-22-2017, 06:35 PM Thread Starter
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Here are pictures of the hose. Left side front of bike.
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Last edited by Stanford; 09-22-2017 at 06:55 PM. Reason: pictures were sideways
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post #3 of 34 (permalink) Old 09-22-2017, 06:59 PM
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that hose is the crankcase vent. if you still have stock airbox setup, there is a fitting (on bottom I believe) that it connects to.
if you have ear shaved, then it goes to a small filter you have to add, a breather filter works perfectly. it just needs to have access to filtered air, so that dirt and crap dont get pulled into the crankcase if the crankcase get a negative pressure in it

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post #4 of 34 (permalink) Old 09-22-2017, 07:19 PM
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how about an introduction in the newbie section

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post #5 of 34 (permalink) Old 09-22-2017, 07:21 PM
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Yep, crankcase vent. You can see someone has already sleeved another hose inside it. So I would guess it's missing an aftermarket filter and the airbox is gone, because the airbox would connect right where the other hose is sleeved in.

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post #6 of 34 (permalink) Old 09-22-2017, 10:11 PM Thread Starter
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Quote:
Originally Posted by OleDirtyDoc View Post
how about an introduction in the newbie section

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Sorry, not meaning to be rude. Only chose to post when I ran out of all other options.

Didn't want to bother any one with any noob questions if I could help it.

Old ex rider years ago just retired. Bought a 1985 Vulcan as a project.

An on-going project I'm finding out lol.
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post #7 of 34 (permalink) Old 09-22-2017, 10:12 PM Thread Starter
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I bought it used for $450 pulled the carbs and cleaned and put back together. The air box is gone... Someone has modified this bike. "No ears" you call it?

Able to get it running primeing it first.... gas leaks out etc.

Long way to go but it starts and runs and doesn't miss.
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post #8 of 34 (permalink) Old 09-22-2017, 10:15 PM Thread Starter
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Quote:
Originally Posted by michiganteddybear View Post
that hose is the crankcase vent. if you still have stock airbox setup, there is a fitting (on bottom I believe) that it connects to.
if you have ear shaved, then it goes to a small filter you have to add, a breather filter works perfectly. it just needs to have access to filtered air, so that dirt and crap dont get pulled into the crankcase if the crankcase get a negative pressure in it
Its spitting out radiator fluid?
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post #9 of 34 (permalink) Old 09-22-2017, 10:16 PM Thread Starter
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Ok, the air box is gone and so are the ears.

What did they try to do to it and how do I fix it?
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post #10 of 34 (permalink) Old 09-22-2017, 10:46 PM
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Coolant from that hose is a very bad sign. Blown head gasket, cylinder base gasket, or the worst, a cracked cylinder, case, etc. I suppose the water pump seal might cause this too. Seems like it would have to be a gusher to come out there.

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