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81 KZ550 - No Start
- gaillarry
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Have a portable gas tank installed, vacuum port is plugged off, new battery and nice fat spark on all the plugs but she just won't start. Lots of gas in the float bowls. Any suggestions?
1977 KZ1000
1985 Gpz750
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- Locozuna
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KZ900LTD, KZ750LTD, KZ650, 72'Triumph Trident
"Over the Mountains
Of the Moon,
Down the Valley of the Shadow,
Ride, boldly ride,"
The shade replied
"If you seek for Eldorado!"
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- gaillarry
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1977 KZ1000
1985 Gpz750
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- timebomb33
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1973 z1 2-1974z1-a,2-1975z1-b dragbikes1015cc+1393cc, 1977kz1000,1978kz1000,1981kz1000j, 1997 zx-11, 2000 z12r,1428turbo nitrous pro-mod and a shit load of parts thats all for now leader sask.,CANADA
I THINK MY POWERBAND BROKE
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- Locozuna
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KZ900LTD, KZ750LTD, KZ650, 72'Triumph Trident
"Over the Mountains
Of the Moon,
Down the Valley of the Shadow,
Ride, boldly ride,"
The shade replied
"If you seek for Eldorado!"
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- gaillarry
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1977 KZ1000
1985 Gpz750
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- Patton
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...81 KZ550. Mixture screws were set at 4.5 turns out(I think way too much)...won't start. Lots of gas in the float bowls. Any suggestions?
Concur that pilot air screws are set way too lean (letting in far too much air). Would set them 1.5 turns out from lightly seated.
Enrichener circuit (choke) is designed to function with the throttle slides fully closed down. So do not even touch the throttle when starting a cold engine with the choke fully on.
Imo, the starting problem is not the main jet size and not the needle clip position.
Good Luck!
1973 Z1
KZ900 LTD
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- gaillarry
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1977 KZ1000
1985 Gpz750
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- Patton
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I've reset the mixture screws to 1.5 turns out. Can someone confirm the coil wiring for me. The left coil fires 1 & 4, has a green wire and a red/yellow wire. The right coil fires 2 & 3, has a black wire and a red/yellow wire. I have a wiring diagram but it's faded.
Thinking black wire should go to whichever coil is firing outside plugs #1/4. And green wire to other coil firing inside plugs #2/3.
Under the points cover, the left-hand module (or left-hand set of points) should have its wire (presumably black) routed to whichever coil fires #1/4. And the right-hand module (or right-hand set of points) should have its wire (presumably green) routed to whichever coil fires #2/3.
Good Luck!
1973 Z1
KZ900 LTD
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- gane
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[img][/img] 1977 KZ1000A1
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- loudhvx
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I've reset the mixture screws to 1.5 turns out. Can someone confirm the coil wiring for me. The left coil fires 1 & 4, has a green wire and a red/yellow wire. The right coil fires 2 & 3, has a black wire and a red/yellow wire. I have a wiring diagram but it's faded.
That's not the stock config. for the small KZ's. (The larger 900/1000/1100 bikes use left for 1&4, right for 2&3.)
On the 550's and 650's (and presumably the 750-4), the left or rear pickup (with small black and blue wires) controls the ignition for the 1&4 cylinders. This means through the ignitor, they fire the right coil which has a black wire to it.
The right or front pickup (with small yellow wire and red wire) controls the ignition for the 2&3 cylinders. This means through the ignitor, they fire the left coil which has a green wire to it.
The red/yellow wire goes to both coils.
When 1&4 are near top dead center, the pointer on the ignition rotor should be pointing to the left or rear pickup.
When 2&3 are near top dead center, the pointer on the ignition rotor should be pointing to the right or front pickup.
If the rotor is pointing the wrong way, someone may have rebuilt it backwards. You can easily fix that by removing the advancer and flipping the rotor 180 degrees.
It doesn't really matter which coil is mounted where, as long as the one with the black wire fires 1&4 and the one with the green wire fires 2&3. However, it would be less confusing if you can keep it in the stock configuration.
Here's some more info on the pickup magnets and rotor orientation.
kzrider.com/index.php?option=com_kunena&...d=4&id=134605#135713
1981 KZ550 D1 gpz.
Kz550 valve train warning.
Other links.
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- loudhvx
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www.geocities.com/loudgpz/GPZchokeScrewMod.html
By the way, 112 seems way too big for a KZ550. I'd try a 96 or 98 depending on the exhaust and pods. Maybe a 102, but that may get sluggish in really hot weather.
Shimming the needle in the TK22 can lead to the needle rubbing on the needle jet opening. If you get some of the common rebuild kits, they will come with new jets and adjustable needles.
I posted a bunch of jetting info for the TK22 in this thread.
kzrider.com/index.php?option=com_kunena&...ew&catid=3&id=262010
1981 KZ550 D1 gpz.
Kz550 valve train warning.
Other links.
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