ZX600c 1989 Stormtrooper Build - Page 2 - KawiForums - Kawasaki Motorcycle Forums
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post #11 of 17 (permalink) Old 04-06-2016, 01:38 AM Thread Starter
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Well I figured out the timing issue, since I was putting a new used head on I hadn't backed off the nuts for the valve guides... Was just enough off to restrict it.

Loosened them all up and got it right first try! Adjusted the valve spacing then put the bike back together. Filled up all the fluids and started it up... started the third time on the starter but the idles way too high. Prolly at around 8000 RPM high.

Figure the issues somewhere in the carb since I just retted it. Will look into it more tomorrow.
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post #12 of 17 (permalink) Old 04-06-2016, 06:10 PM
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Since you already rejetted for intake air changes, the jetting might still be close enough for exhaust changes- only 1 way to find out.

I would check the adjustment for the throttle cables first- both where they attach to the carbs and for the knob that turns by hand for the pull cable.
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post #13 of 17 (permalink) Old 04-06-2016, 10:02 PM Thread Starter
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Problems not with the throttle or cables. I can visually see the butterfly valves are closed. Got to be a massive vacuum leak. We're talking 8-10K rpm
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post #14 of 17 (permalink) Old 04-08-2016, 12:25 AM Thread Starter
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Success!!!

Got the bike running pretty well tonight! Took it all back apart and put it back together. Have a hunch that it was the idle mixture screws but cant tell for sure. Hopefully this weekend ill find time to tune the Carbs. Got a few new leaks out of the transmission and forks though so seals are on their way.

After my riding course tonight I ordered the trailtech Vapor gauge system so now starts the fun stuff! Stay tuned!

Last edited by thedaringmove; 04-08-2016 at 12:58 AM.
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post #15 of 17 (permalink) Old 04-11-2016, 02:31 PM Thread Starter
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So I finished my riding class yesterday! Waiting on certificate in the mail then I will go get my permit.

Tried to go on a ride with a few friends yesterday but engine started having major trouble. It felt like the power would drop and come back at random... My buddy thought it meant the carbs weren't jetted correctly but I was almost certain carbs weren't the issue since I had ridden it last week with no problems... Pulling plug wires and checked compression on cylinders... all cylinders over 150psi so no problem there. However, when I pulled the cylinder two spark plug I realized the old plug seal was attached to the plug along with the new. The old seal must have been in the head still when I installed plugs.


Slapped it all back together and hoped it would work. Didn't
Checked spark and realized cylinders 2&3 weren't sparking consistently. So checked pos/ground to the coil and found them pretty loose. Squeezed female ends with pliers and reinstalled: seems to be fixed!

Because of all the engine trouble I didn't have time to get to installing the headlights/gauges so hopefully I have time this week.

Here's how she sits now when I rode to school this morning:
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post #16 of 17 (permalink) Old 04-13-2016, 12:07 PM Thread Starter
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Very bad news. Oil and water are mixing again. Even after I just did a head gasket and new head...

I'm stumped. I though the water pump looked pretty good so didn't think that could be the problem.
So, if it isn't the water pump what could it be? Wouldn't it have to be a hole in the block spilling coolant into the oil? How screwed am I
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post #17 of 17 (permalink) Old 04-17-2016, 05:12 AM
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On top of the motor, there are the two coolant connectors. I wonder if there is a crack around/inside that? Add some pressure to the coolant lines in the motor and see if the pressure drops. Or if you have the valve cover off, you may be able to visually inspect for coolant.
The other thing I would look at is the head bolts. Did you torque them down correctly in the right order? If not, it could be the gasket. One side of the head is tighter than the other.
It's just a thought, but I wish you luck! I've got a 1990 version, and in a similar situation. Just can't get it running right.

Last edited by metalpeddler88; 04-17-2016 at 06:18 PM.
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