Oil leaking out of the drain tube - Honda Rebel 300 & 500 Forum
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post #1 of 22 (permalink) Old 08-15-2017, 07:00 PM Thread Starter
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Oil leaking out of the drain tube

So I recently changed the oil in my rebel 500 and now I have noticed twice now that there is a small puddle under the drain tubes that smells and feels like oil. It is definitely not coming from the drain plug or the oil filter it is directly under the drain tubes. Could I have done something wrong during the oil change to cause this? It has only done it twice with probably 10 rides total.
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post #2 of 22 (permalink) Old 08-15-2017, 07:29 PM Thread Starter
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I checked all over the bike and cannot find a leak anywhere and I would imagine if it was leaking from the engine I would smell it burning the drain tubes looks pretty dry too so I have no idea where it is coming from or why it only does it on certain occasions.
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post #3 of 22 (permalink) Old 08-15-2017, 08:24 PM
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88,

Without a shop manual I am uncertain where the oil is coming from. My best guess the oil is from a Positive Crankcase Vent. If so there is nothing to worry about.

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post #4 of 22 (permalink) Old 08-15-2017, 09:41 PM
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88,

Without a shop manual I am uncertain where the oil is coming from. My best guess the oil is from a Positive Crankcase Vent. If so there is nothing to worry about.

Kenny G
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post #5 of 22 (permalink) Old 08-16-2017, 05:22 PM Thread Starter
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This is what it looks like.
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post #6 of 22 (permalink) Old 08-16-2017, 05:31 PM
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What climate are you riding in? This could be water condensation mixed with oil coming from the crankcase vent. Does the spot evaporate eventually?

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post #7 of 22 (permalink) Old 08-16-2017, 05:32 PM
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Originally Posted by Rebel_Rider88 View Post
This is what it looks like.
when you filled your oil most recently, did you change the oil filter?

do you know how much oil you put in the bike?

to me it looks like the bike has been overfilled with oil and its coming out the overflow tube. Its not extremely over filled, but enough so that as the oil warms up it splashes up into the overflow tube and as it rests slowly drips out.

if you changed the oil without changing the filter, and put a full 3 bottles of oil into it, you put like, 1/6th or 1/9th of the bottle too much into the bike.

that'd be my first guess.

if you did change the oil filter and the oil, then i'm not sure what you did differently this time versus the previous time you changed the oil. maybe you didn't let it drain out completely?

oh edited cuz i re read the original post and noticed you said its directly below the drain tube and not the plug...

one other thing... there's another tube down there with a plug in it, maybe its full of stuff and needs to be cleared... might be causing too much pressure and squirting some oil out the overflow...

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post #8 of 22 (permalink) Old 08-16-2017, 05:51 PM Thread Starter
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I'm in a very hot climate, southeast Georgia. I changed the oil and filter about a week ago and put 2.9 qts of oil in it. I think the heat has something to do with it because it never does it at home, I've only noticed it when I park somewhere and leave it where it is directly exposed to sunlight for an extended period of time. I parked there this morning and went to leave 9 hours later so I don't think it was going to evaporate
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post #9 of 22 (permalink) Old 08-16-2017, 05:52 PM Thread Starter
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I've seen that plug, can it be cleared and what fluid is it keeping from coming out?
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post #10 of 22 (permalink) Old 08-16-2017, 06:05 PM
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Quote:
Originally Posted by Rebel_Rider88 View Post
I'm in a very hot climate, southeast Georgia. I changed the oil and filter about a week ago and put 2.9 qts of oil in it. I think the heat has something to do with it because it never does it at home, I've only noticed it when I park somewhere and leave it where it is directly exposed to sunlight for an extended period of time. I parked there this morning and went to leave 9 hours later so I don't think it was going to evaporate
I know the manual says 2.9 quarts, but mine didn't take that much (2.6 to 2.7 actually), and I waited until it had completely stopped dripping before putting in the new stuff.

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