Oil Leak - KZ1100 A3

More
19 Mar 2024 07:42 - 19 Mar 2024 08:50 #896607 by jeh
Oil Leak - KZ1100 A3 was created by jeh
Thanks for accepting me. I’m a 24 year computer engineer, and pretty new to KZs. Love this forum, filled with a lot of info.

Recently noticed that the oil level was quite low. So, I added some oil today to the correct level and went for a ride. Saw fresh oil stains here on Right Side.

I didn’t see the oil leak when it’s standing still, only when I rode it.

The bike runs fine/normal.

Also, see spray stains on my shin.

What do you guys think? How much time do I have before going to a mechanic? As I’m really busy with work, prefer to do it by myself when I have time.

jeh
Last edit: 19 Mar 2024 08:50 by Street Fighter LTD.

Please Log in or Create an account to join the conversation.

  • Street Fighter LTD
  • Offline
  • Moderator
  • TURBO, Its Better to be Blown than Injected
More
19 Mar 2024 08:57 #896615 by Street Fighter LTD
Replied by Street Fighter LTD on topic Oil Leak - KZ1100 A3
Welcome to KZRider 
 I moved this  thread to new members for you  ( For Now )
All new members are to make their first posts in the new members forum  
I also fixed your pictures to be full size 
Next time click the insert all tab to complete the installation .
Please read our rules and  and our about the site section 
Dave


Original owner 78 1000 LTD
Mr Turbo Race Kit, MTC 1075 Turbo pistons by PitStop Performance , Falicon Ultra Lite Super Crank, APE everything. Les Holt @ PDM's Billet Goodies . Frame by Chuck Kurzawa @ Logghe Chassis . Deep sump 5qt oil pan. RIP Bill Hahn

Please Log in or Create an account to join the conversation.

  • SWest
  • Offline
  • Sustaining Member
  • 10 22 2014
More
19 Mar 2024 09:20 #896616 by SWest
Replied by SWest on topic Oil Leak - KZ1100 A3
Looks like the stud nuts are weeping. Might try to retorque them and see if it stops. 
The following user(s) said Thank You: jeh

Please Log in or Create an account to join the conversation.

More
19 Mar 2024 10:22 #896624 by jeh
Replied by jeh on topic Oil Leak - KZ1100 A3
Hi, are you talking about these nuts? Someone told me it could valve cover gasket, but I don’t see any oil stains up there.

How shall I retorque these? i don’t a think a socket wrench would fit there. Can I use a normal spanner?
Also how does this get loosened by itself?

thanks
jeh

Please Log in or Create an account to join the conversation.

More
19 Mar 2024 14:28 - 19 Mar 2024 14:33 #896633 by sf4t7
Replied by sf4t7 on topic Oil Leak - KZ1100 A3
Could also be that smaller head bolt next to the spark plug.  I've got one that weeps but it seems to be more from the gasket area.  And yes a tall socket (with a short extension if necessary) will work with your torque wrench for the large head nuts.  (You are planning to use a torque wrench, right?)


Scotty

1974 Z1A
1015
welded Z1 crank
Andrews 1X Cams
Delkevic 4 into 1
Superbike bars
530 conversion
Last edit: 19 Mar 2024 14:33 by sf4t7. Reason: added socket note

Please Log in or Create an account to join the conversation.

More
19 Mar 2024 14:36 #896634 by Nessism

Please Log in or Create an account to join the conversation.

More
19 Mar 2024 14:38 #896635 by jeh
Replied by jeh on topic Oil Leak - KZ1100 A3
Okay. Should I loosen up all 4 cylinder head nuts and then retorque all of them in order? Or only just tighten the ones that are loose?
What is the process? 
 Thanks..

Please Log in or Create an account to join the conversation.

More
19 Mar 2024 16:46 #896645 by TexasKZ
Replied by TexasKZ on topic Oil Leak - KZ1100 A3
There is more than four of them. You will need to remove the fuel tank and tighten them in the sequence described in the service manual. It is not hard, just a little tedious,

1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough

Please Log in or Create an account to join the conversation.

More
19 Mar 2024 23:35 #896654 by jeh
Replied by jeh on topic Oil Leak - KZ1100 A3
Okay. So this one, yeah?

Please Log in or Create an account to join the conversation.

  • howardhb
  • Offline
  • Sustaining Member
  • God, I trust
More
20 Mar 2024 04:21 #896656 by howardhb
Replied by howardhb on topic Oil Leak - KZ1100 A3
These two bolts are M6 (10mm hex head) and require a MUCH lower torque (1.2 Kg / m) than the other head nuts.



H.

'81 GPz 550 D1
'81 GPz 1100 B1 ELR "Tribute" www.kzrider.com/our-forum/11-projects/61...-elr-tribute?start=0
'82 Yamaha YB100 Fizzie
'79 Suzuki GT200 X5 TWO STROKE TWIN - SMOKER!

Please Log in or Create an account to join the conversation.

  • slmjim+Z1BEBE
  • Away
  • User
  • Enjoy Life! IT HAS AN EXPIRATION DATE!
More
20 Mar 2024 05:21 - 20 Mar 2024 05:48 #896658 by slmjim+Z1BEBE
Replied by slmjim+Z1BEBE on topic Oil Leak - KZ1100 A3
Carefully examine the front of the motor in the head gasket / camchain areas.  We've learned that a leaking mechanical tach drive (on a Z1 at least) can perfectly mimic a head gasket or camchain tunnel O-ring leak because of the way air blows the oil rearward.  We don't see the tach drive cable in the first pic though.  The mechanical drive on Z1's and older KZ1K's is above the #3 exhaust port, between it and the camchain bulge in the head.  Electronic tach?  Worth a look...

We've read about a process in which an oil weep can be found by cleaning, de-greasing & drying the suspect area(s) well, then running the motor for a while, after which spraying white powder (foot powder?) in the area & looking for discoloration caused by an oil weep.  Or maybe it was apply powder, then run.  Never tried it ourselves.

Good Ridin'
slmjim & Z1BEBE

A biker looks at your engine and chrome.
A Rider looks at your odometer and tags.

1973 ('72 builds) Z1 x2
1974 Z1-A x2
1975 Z1-B x2
1993 CB 750 Nighthawk x2
2009 ST1300A

www.kawasaki-z-classik.com
An enthusiast's forum focused exclusively
on all things Z1, Z2 and KZ900.

Last edit: 20 Mar 2024 05:48 by slmjim+Z1BEBE. Reason: Typos
The following user(s) said Thank You: howardhb

Please Log in or Create an account to join the conversation.

More
20 Mar 2024 12:22 - 20 Mar 2024 12:24 #896669 by Wookie58
Replied by Wookie58 on topic Oil Leak - KZ1100 A3

Could also be that smaller head bolt next to the spark plug.  I've got one that weeps but it seems to be more from the gasket area.  And yes a tall socket (with a short extension if necessary) will work with your torque wrench for the large head nuts.  (You are planning to use a torque wrench, right?)
Where would the oil be coming from to "weep" around the smaller outer bolts unless it is leaking through the head gasket from the supply passages around the main studs ?? I have never seen a failed gasket successfully seal through "re-torqueing" but I have seen a few stripped threads from trying to "tighten it down a little more"
Last edit: 20 Mar 2024 12:24 by Wookie58.
The following user(s) said Thank You: slmjim+Z1BEBE

Please Log in or Create an account to join the conversation.

Powered by Kunena Forum