Author Topic: oil leak on crankcase  (Read 561 times)

0 Members and 1 Guest are viewing this topic.

Offline cappyg

  • Training Wheels
  • *
  • Posts: 83
  • AREA: North Central Area
  • COG#: Forum
  • Membership Level: Forum Subscriber
oil leak on crankcase
« on: November 08, 2017, 12:35:03 pm »
Just wanting to know if any of you think this is the cam sensor oring or valve cover leak.  I am sorry I have not checked it yet since I just noticed it this morning.  There is a small wet spot about 1 inch forward of oil cap, but inside closer to cylinders. (right side of bike)  Not much at all, but I can smell it until it burns off.  Everything I searched seems that the other leaks are in the front by the header pipes.

Thanks in advance,
Greg.
Greg in Cincinnati
GTR1400 08' "Holy Kaw" Shoodaben EVO Flashed
T500 75' Suzuki Titan
XR400 98' Honda "Tractor"

Offline jwh20

  • Crotch Rocket
  • ****
  • Posts: 1872
  • AREA: North Central Area
  • COG#: Forum
  • Membership Level: Forum Subscriber
Re: oil leak on crankcase
« Reply #1 on: November 08, 2017, 12:42:29 pm »
The o-ring leak is quite common, so that's the first thing you'll want to check.  The valve cover leaking is much less common.
2012 Concours 14 Arabian Red
"Debbie Downer" according to some...

Offline Deepsea

  • Street Cruiser
  • ****
  • Posts: 789
  • AREA: Southwest Area
  • COG#: 10376
  • Membership Level: Active
Re: oil leak on crankcase
« Reply #2 on: November 09, 2017, 01:26:53 am »
To clarify, the oil (wet spot) leak is on the back side of the cylinders forward of the oil fill cap?


Any oil on the cylinders?
BSA Gold Star, Norton Commando, Moto Guzzi V-7 Sport, Norton Commando, John Player Norton, BMW R90S, Kawasaki Z-1 and Z-1R , Honda CB-650, C-14
El Mirage Record Holder A-BG 3000cc 11/83 184.049 mph  CDA#0438
(twin engine, twin turbo, Z-1)
Retired Navy Saturation Diver

Offline cappyg

  • Training Wheels
  • *
  • Posts: 83
  • AREA: North Central Area
  • COG#: Forum
  • Membership Level: Forum Subscriber
Re: oil leak on crankcase
« Reply #3 on: November 09, 2017, 01:23:49 pm »
I have a PHOTO but it exceeds the file limit size.  If you stand on the right of bike facing the crankcase.  The oil spot from dripping I suppose is about 1" to right of the oil filler cap but its back closer to the base of the cylinder.  A pic would be nice.  I have the pic here at work still trying to reduce the size of it.

Thanks again,
Greg.
Greg in Cincinnati
GTR1400 08' "Holy Kaw" Shoodaben EVO Flashed
T500 75' Suzuki Titan
XR400 98' Honda "Tractor"

Offline Deepsea

  • Street Cruiser
  • ****
  • Posts: 789
  • AREA: Southwest Area
  • COG#: 10376
  • Membership Level: Active
Re: oil leak on crankcase
« Reply #4 on: November 11, 2017, 05:57:32 pm »
?????
BSA Gold Star, Norton Commando, Moto Guzzi V-7 Sport, Norton Commando, John Player Norton, BMW R90S, Kawasaki Z-1 and Z-1R , Honda CB-650, C-14
El Mirage Record Holder A-BG 3000cc 11/83 184.049 mph  CDA#0438
(twin engine, twin turbo, Z-1)
Retired Navy Saturation Diver

Offline DiverRay

  • Tricycle
  • Posts: 34
  • Ride Safe, Ride Fast
  • AREA: Southwest Area
  • COG#: 12498
  • Membership Level: Active
Re: oil leak on crankcase
« Reply #5 on: November 12, 2017, 08:18:37 pm »
photoscape is a free program that will do a lot of things with digital pictures, including reducing the size. Windows 10 I had to purchase it, but my 7pro machine it was free, and very easy to use.
Just trying to help so you CAN post a picture and get more info from those here that really know the bike.
Ray Matteis
KE6NHG
2011 Concours
1978 XS1100 Yamaha (winter project)

Offline smithr1

  • I Need a Life
  • ******
  • Posts: 5084
  • AREA: South Central Area
  • COG#: 6197
  • Membership Level: Asst. Area Director
Re: oil leak on crankcase
« Reply #6 on: November 16, 2017, 06:35:02 pm »
Every winders comes with Paint.  Paint has a button called Resize.   It is that easy.

If the oil is not on the front of the engine but the back then it is not the sensor o-ring.
---
Bob Smith (smithr)
Austin, Texas baby!
2010 Kawasaki Concours, Midnight Blue
COG 6197, CDA 107

Offline concfronc

  • Training Wheels
  • *
  • Posts: 84
  • AREA: Southwest Area
  • COG#: Forum
  • Membership Level: Forum Subscriber
Re: oil leak on crankcase
« Reply #7 on: November 19, 2017, 09:27:01 pm »
I just had a very similar leak. Mine turned out to be coming from the back of the rear brake master cylinder. The fluid reservoir under the seat has a tube that runs down to a plastic connector on the back of the master cylinder. The fluid dripped on to the exhaust heat shield, ran down the back edge and dripped right where you are describing. I replaced the snap ring, the connector and the O-ring (Partzilla.com) and it is now leak free. I am guessing heat from the exhaust damaged it. That's probably why Kawasaki extended the heat shield on newer bikes.
Its not the destination, but the journey that matters
2011 Concours 14