Sounds like you have them set perfectly for ethanol laced fuels.
Dark tan on the earth strap blending to black as it curves to the plug body then black on the plug base with the core insulator the same dark tan again.

Plug caps and plugs both have resistors resulting in weak spark sooting the plugs at low revs.
At higher revs your getting a better cleaner spark due to increased charge voltage.......
Maybe? One or no resistor/s per ignition line only.

Kawasaki knew what they were doing. Just run with zero resistance caps and plugs. My fettled J doesn't miss a beat on stock coils.

Al Marshall. Member here.

Normally any oil leak in that area is from the alternator wire grommet. They pretty much all leak there unless it's been gasket goo'd in recently.

I hated the Raask gear and brake levers. Always thought they were short and a bit mickey mouse.
I cut mine and just used the pivot and made my own levers.

Thanks compo, Those Z1r rubbers are different to the ones fitted onto my "J" Mine look more like a concertina. Got any contact details or links to products for Ross? warren he has a website i think found his ebay user name https://www.ebay.com/itm/184235386614?itmmeta=01JYYG6S8KRF6RH6JSK3W...

Got any contact details or links to products for Ross?

There's a guy in Aus that does them. Don't have any contact details just recall seeing them about 3 or 4 years ago. On KZRider a guy made some from wiper blades that turned good. I'll try and track the thread down and link it. Found it. https://www.kzrider.com/forum/4-electrical/612906-1981-kz1000-s...

65psi is very low even on a cold engine. Were all the plugs out and holding the throttle wide open and turning over using a well charged battery? I've never seen a Z engine, even an absolutely shagged one read below 80psi. .Additionally test your test equipment. Couple it up to a known psi output on...

Helicoils are fine for that application. You don't need to torque the hell out of them. People using fsm torque settings on 40+ year old stretched bolts and worn aluminium threads is the reason they've stripped.

Welcome to the club.

Simonic wrote:https://www.z-power.co.uk/carb-overflow-pipe-set

Thats shocking £21. 00! + p&p
£21.00 + p&p will get you twenty metres from advanced.
https://www.advancedfluidsolutions.co.u ... 2273-p.asp