Weep hole in side of engine leaking coolant - Kawasaki Vulcan Forum : Vulcan Forums
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post #1 of 6 (permalink) Old 01-15-2019, 04:25 PM Thread Starter
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Weep hole in side of engine leaking coolant

Picture is of the weep hole. It is leaking coolant while the bike is running at a slow, but steady rate. found it when I was checking my oil level one day. Appeared out of no where.

Anyone know what it is? How to fix it? I'm at a loss. I can't find any reference to this hole in any manual or any forum, much less the fact that it's weeping. The hole is on the other side as well, and it's also on stock photos of the EN500 so it's 100% not aftermarket.

Any help is WONDERFUL. Thanks in advance.

Below is a link to the pictures of the hole.

https://imgur.com/a/62VLwnm

EDIT: Bike is an '04 Vulcan 500. 13k miles.
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Last edited by Sunsunsun; 01-15-2019 at 04:31 PM.
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post #2 of 6 (permalink) Old 01-15-2019, 08:27 PM
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Sunsunsun,

That weep hole drains the pocket where the spark plug and boot reside. Also within this pocket is a coolant pipe and hose. Have the valves been adjusted recently? If so then the o-ring on the coolant pipe may be leaking and needs to be replaced. The coolant hose that connects to this pipe is secured by a clamp that could be loose. If it is the o-ring it might seal itself. You may be able to reach the hose clamp from the side. It is behind the spark plug boot.

Hope this helps.
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'97 EN500LTD 'Hidalgo' 208,000+ miles so far
'98 EN500LTD 'Sioux' 19,000 miles so far
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post #3 of 6 (permalink) Old 01-16-2019, 06:16 AM
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The O-Ring is 14mm.

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post #4 of 6 (permalink) Old 01-16-2019, 07:20 PM Thread Starter
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Is it the hose with the arrows on it in the below image?

https://imgur.com/a/0VtXhl8

If not, do you mind taking a picture of the hose you are talking about? This hose isn't visibly leaking.

Thanks in advance,

Jared
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post #5 of 6 (permalink) Old 01-17-2019, 06:13 AM
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Quote:
Originally Posted by Sunsunsun View Post
Is it the hose with the arrows on it in the below image?

https://imgur.com/a/0VtXhl8

If not, do you mind taking a picture of the hose you are talking about? This hose isn't visibly leaking.

Thanks in advance,

Jared
It not usually the hose but rather the pipe it connects too...It has a o-ring on the bottom that sits into the head.....The o rings should be replaced every time the valves are adjusted.
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post #6 of 6 (permalink) Old 01-17-2019, 06:16 AM
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Yes, that is the hose. If youíre not seeing a leak at the hose then the leak is likely to be from the o-ring. The o-ring is located where the pipe inserts into the cylinder head and will require removing the fuel tank to remove it to replace the o-ring. How good are your mechanical skills?

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'97 EN500LTD 'Hidalgo' 208,000+ miles so far
'98 EN500LTD 'Sioux' 19,000 miles so far
VROC #3833 IronButt #6024
Levelland, TX


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