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My Kz550 carbs aren't sucking enough gas
- loudhvx
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But the first check, I guess, would be to make sure the throttle is returning all the way.
If you follow the links in my signature, you can get several manuals. Download all of them so have different sources for comparison.
1981 KZ550 D1 gpz.
Kz550 valve train warning.
Other links.
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- PABCASSOINK 32
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- loudhvx
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The water on a cold pipe will boil off slowly. On a hot pipe, the pipe never gets wet. The water dances off immediately.
Member Zirafin posted a good video of how the water test is different for a cold pipe versus a hot pipe.
Here's his thread:
www.kzrider.com/forum/3-carburetor/601625-what-to-do?start=40
And here is his video, go to about 40 seconds in:
1981 KZ550 D1 gpz.
Kz550 valve train warning.
Other links.
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- PABCASSOINK 32
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- loudhvx
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Start at the motor:
Compression?
Valve adjustment (read the valve train warning in my sig before touching the valve cover)?
Then ignition:
Wired correctly?
Bad coil?
Bad pickup?
Bad igniter?
Bad plugs?
Bad plug wires?
Then carbs:
Fuel flow? (you checked that so far)
Fuel level setting?
Vacuum leaks?
Throttle position synced?
Pilot jets clean?
Choke flaps missing?
Main jets clean?
Needle setting correct?
1981 KZ550 D1 gpz.
Kz550 valve train warning.
Other links.
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- PABCASSOINK 32
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The right side coil gets a small black wire, and the plug wires go to cylinders 1 and 4.
The left side coil gets a small green wire, and the plug wires go to cylinders 2 and 3.
(The big motors have the coils swapped left and right, in case you come across conflicting info.)
The actual physical placement of the coils don't matter. And even the green and black wires can be swapped if the timing rotor is flipped, but it's best to keep it the way it came from the factory to reduce confusion.
1981 KZ550 D1 gpz.
Kz550 valve train warning.
Other links.
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- PABCASSOINK 32
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- floivanus
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On a stock bike with stock coils and wires the wires are labeled.
my bikes; 80kz1000(project), 77 gl1000, 74 h2 (project)
Past; 78 kz1000, 83 kz550
Andrew
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- SWest
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Steve
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- loudhvx
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PABCASSOINK 32 wrote: I'm talking about the " spark plug wires " I know there's a certain spot on the coils that each spark plug wires are hooked up to ..
I mentioned which coil's spark plug wires go to which cylinder.
loudhvx wrote: The right side coil ... plug wires go to cylinders 1 and 4.
The left side coil ... plug wires go to cylinders 2 and 3.
Obviously you don't want to cross wires unnecessarily, and you want to take the shortest route, so:
On the right coil, the right outlet goes to spark plug #4. The left outlet goes to spark plug #1.
On the left coil, the right outlet goes to spark plug #3. The left outlet goes to spark plug #2.
The actual route is not critical, but avoid kinks and minimize crossing with other wires.
1981 KZ550 D1 gpz.
Kz550 valve train warning.
Other links.
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