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Major oil leak
Posted: Sun Mar 24, 2019 4:22 pm
Author: Gavin
Hi guys, need your expertise. I went out for a ride out on Saturday did a total of 90 mls with a long stop at 50 mls everything ok at that point, I didn’t thrash it at anytime. When I got home there was oil all over the swingin arm over the rear wheel, the inner mud guard and over the main stand. After checking the engine there was a couple of weeps from tacho and alternator grommet but nothing substantial, I removed the air filter and the oil is inside the air box and has leaked out of the airbox drains,
Any idea what has caused this and how to sort it
Thanks in advance
Re: Major oil leak
Posted: Sun Mar 24, 2019 5:13 pm
Author: weaver
Need more info...engine work over the winter?too much oil?
Re: Major oil leak
Posted: Sun Mar 24, 2019 5:44 pm
Author: zed1015
If the motor is a gud un it's usually because the oil level is too high.
If not then worn rings/bore will allow excessive blowby and pressurise the cases.
Re: Major oil leak
Posted: Sun Mar 24, 2019 5:54 pm
Author: ZedHead
zed1015 wrote:If the motor is a gud un it's usually because the oil level is too high.
If not then worn rings/bore will allow excessive blowby and pressurise the cases.
As he said
Re: Major oil leak
Posted: Mon Mar 25, 2019 11:03 am
Author: scott
I sincerely hope you DID go for the rebore and not just the hone.
Re: Major oil leak
Posted: Tue Mar 26, 2019 12:06 am
Author: Gavin
Scott, this is on my Z900 not the MK2 which presently stripped down and on shelves waiting for my to start on it
Re: Major oil leak
Posted: Tue Mar 26, 2019 6:43 pm
Author: Mark Tiller
Higher miles on a Zed they prefer the oil level lower
Re: Major oil leak
Posted: Thu Mar 28, 2019 10:33 am
Author: Gavin
Morning Guys
I have done a couple of compression tests on the motor,
the first using my cheap and cheerful tester( hose flexes and has a thin sealing O ring at the plug end.
No.1= 107, No2= 102, No.3= 100, No.4= 108
I then used a tester from a mechanic who used to work For a Kawasaki and other dealerships so he has good gear.
No.1=138, No.2= 130, No.3= 128, No.4=140
I have noticed that having slightly extended forks in the bike and the slight slope on the floor of me garage it does make a big difference to the oil level window which way you point the bike on main stand. One way It is a bit over the top level mark, then the other way it’s well full +.
Re: Major oil leak
Posted: Thu Mar 28, 2019 2:05 pm
Author: zed1015
Comp is decent and the oil level sounds like the cause of the oil blowing.
Anything over the top mark and they will chuck it out.
Re: Major oil leak
Posted: Fri Mar 29, 2019 9:37 am
Author: Gavin
Big thank you for your replies guys