oil leak under exhaust pipe? - Honda Motorcycles - FireBlades.org
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post #1 of 16 Old 04-25-2009, 11:27 PM Thread Starter
 
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oil leak under exhaust pipe?

why is my bike leaking oil out of a small hole under the exhaust pipe what do i do to fix it?
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post #2 of 16 Old 04-25-2009, 11:31 PM
 
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Re: oil leak under exhaust pipe?

Being this is your first post I say to the .org

Alot of riders on here with a wealth of knowledge. Someone out there may have a few ideas but more info is needed.

Year, Make, & Model
Mods Done
.... and maybe clarify if its a drip or a puddle.

I'm sure given the right info you"ll get some assistance.

If everything seems under control, you're just not going fast enough.
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post #3 of 16 Old 04-25-2009, 11:42 PM Thread Starter
 
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Re: oil leak under exhaust pipe?

sorry, i have a 96 cbr 900rr with no mods just a slip on pipe . i think the bike was used for stunt riding bike runs great other than it dripping oil from under the exhaust pipes
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post #4 of 16 Old 04-25-2009, 11:56 PM Thread Starter
 
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96 cbr 900rr oil leak under exhaust pipe

just got the bike runs good other than it leaking oil out of a small hole under the exhaust pipe what do i do to fix it HELP!
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post #5 of 16 Old 04-26-2009, 12:00 AM
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Re: 96 cbr 900rr oil leak under exhaust pipe

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Originally Posted by djorion View Post
just got the bike runs good other than it leaking oil out of a small hole under the exhaust pipe what do i do to fix it HELP!
Well, we can't offer much advise until we know where it is and how big it is.
Clean the bottom of the engine then let the bike idle up to operating temp until you can see the oil begin leaking.
If it's a gasket then replace the gasket. If it's leaking through the sump itself then remove and weld or replace the sump.
Pictures would probably be helpful.

"I won't forget that ride for a while. Maybe you're right. Living fast might be worth the final crash. Maybe that's the secret you fliers know." - Flight of the Intruder
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post #6 of 16 Old 04-26-2009, 12:03 AM Thread Starter
 
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Re: oil leak under exhaust pipe?

dripping bad, bad enough to not ride, only when the motor is running
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post #7 of 16 Old 04-26-2009, 12:09 AM
 
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Re: oil leak under exhaust pipe?

have you wiped it all off to see where its coming from? Maybe with some engine degreaser to get it all cleaned up. Then start it and watch closely. Make sure you remove the side farings from the entire lower section of the bike.

If an oil change was done recently and the crush washer not replaced with a new one then it could be a possible solution. I made that mistake once myself.

If everything seems under control, you're just not going fast enough.
Mario Andretti
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post #8 of 16 Old 04-26-2009, 12:13 AM Thread Starter
 
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Re: 96 cbr 900rr oil leak under exhaust pipe

their is one hole under each exhaust port on the head. the hole looks to be about the size of a BB oil only comes out when the bike is running , to much to ride it for to long
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post #9 of 16 Old 04-26-2009, 12:19 AM
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Re: 96 cbr 900rr oil leak under exhaust pipe

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Originally Posted by djorion View Post
their is one hole under each exhaust port on the head. the hole looks to be about the size of a BB oil only comes out when the bike is running , to much to ride it for to long
Okay, those are not oil leaks.
They are merely fluid drains to the spark plugs.
Any fluid that gets onto the top of the engine will run out of there.
If oil is coming out then you most likely have a leaking valve cover gasket or the valve clearances were checked recently and some oil was spilled then.

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post #10 of 16 Old 04-26-2009, 12:28 AM Thread Starter
 
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Re: 96 cbr 900rr oil leak under exhaust pipe

ok! well the bike was used for stunting and i was not sure i thought it was really messed up. ill check it and get back with ya . thank you very much!
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post #11 of 16 Old 04-21-2019, 3:53 PM
 
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Re: 96 cbr 900rr oil leak under exhaust pipe

I'm having the same problem with my 2006 CBR1000rr so how would I get it to stop leaking? just run the bike until it stops? would this cause any other problems?
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post #12 of 16 Old 04-21-2019, 4:10 PM
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Re: 96 cbr 900rr oil leak under exhaust pipe

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Originally Posted by jkenagy View Post
I'm having the same problem with my 2006 CBR1000rr so how would I get it to stop leaking? just run the bike until it stops? would this cause any other problems?
You should clarify whether oil is actually leaking FROM the exhaust pipe or from a crankcase leak above and is dripping down to the exhaust pipe (presumably around the collector box area). Given that the 07 is an underseat exhaust model, you might also notice any condensation which might appear as oil dripping from a loose header to tail pipe clamp.

Ideally, we would need further info and perhaps a couple of pics to offer a definitive response.

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post #13 of 16 Old 04-21-2019, 4:39 PM
 
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Re: 96 cbr 900rr oil leak under exhaust pipe

It's for sure coming from that small port under the exhaust.
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IMG_1284.jpg‎  
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post #14 of 16 Old 04-21-2019, 4:41 PM
 
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Re: 96 cbr 900rr oil leak under exhaust pipe

here's a video
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File Type: mov IMG_1281.mov‎ (4.71 MB, 5 views)
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post #15 of 16 Old 04-21-2019, 4:56 PM
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Re: oil leak under exhaust pipe?

I can'#t exactly work out the location, but it looks to be coming from the crankcase. I just can't see how you'd have clean oil coming from the exhaust pipe. I have an 04 model, but can't look underneath now as it's garaged in the dark. I'll have a further look in the morning and report back.

It's worth mentioning there shouldn't be a hole in the exhaust, unless your model has one for draining condensation. As a worst-case scenario, you might have a shot valve seal or piston ring and THAT will force oil into the exhaust pipe, but generally not to the same degree of flow seen on your video.

2018 CBR1000RR SP2 / 2011 CBR1000RR / 2004 CBR1000RR / 2003 CBR954RR / 2001 CBR929RR (Erion Racing Edition)
1985 Honda VF1000R / 1985 Honda NS400R
2007 MV F4 1000R
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