KZJ78 - Let the fun begin! Oil leak?

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Jsp

Joined
Mar 31, 2026
Threads
2
Messages
4
Location
Ireland
Hi Folks,

Been on this forum for a while, reading endless threads on issues, intro and anything valuable as i waited for my KZJ78 to arrive from Japan to Ireland.

Well, Its finally here! and its beautiful!

WhatsApp Image 2026-07-19 at 09.29.47(1).webp


I do need some help with a issue I noted, so here I am creating my own thread:

1. I noticed some oil on the cylinder head cover, towards the rear left hand side. I believe its the oil breather pipe. See pictures below. Any idea on how to fix this? seals or gaskets worn? is it a show stopper or can I still drive it to get it registered and tested? Front of the cover seems to be ok.

WhatsApp Image 2026-07-19 at 09.29.52.webp
WhatsApp Image 2026-07-19 at 09.29.51(2).webp
WhatsApp Image 2026-07-19 at 09.29.52.webp


Thank you for you help in advance!
 
My KZJ78 has the same oil spot.

My valve cover gasket needs replaced so maybe that could be the issue as well?

I’ll be following this thread to see if there is a confirmed answer
 
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