Engine skips / cuts out around 2000rpm

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13 Sep 2016 18:52 - 13 Sep 2016 18:54 #742130 by KZP1000
Engine skips / cuts out around 2000rpm was created by KZP1000
I have a 2000 Kzp with 18,000 miles on it. The bike is all original. Recently the motor seems to cut out and sputter around 1500-2000rpms( It doesn't do it if I baby it ). At first I thought it might be the carbs but if I rev it in neutral past 2000 rpms it seems fine. Next I thought it was the original 16 year old coils. Today I put a pair of Caltric coils in it and it wouldn't start at all. I put the original could back on and it still won't start. Im sure I'll figure out the not starting thing if I mess around with it but any ideas why it cuts out ? Thanks in advance.
Last edit: 13 Sep 2016 18:54 by KZP1000.

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  • SWest
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  • 10 22 2014
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13 Sep 2016 19:06 #742135 by SWest
Replied by SWest on topic Engine skips / cuts out around 2000rpm
Tested for spark? When was the last time the valves were adjusted?
Steve
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229

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  • slmjim+Z1BEBE
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13 Sep 2016 19:36 #742142 by slmjim+Z1BEBE
Replied by slmjim+Z1BEBE on topic Engine skips / cuts out around 2000rpm
Tried fresh plugs?


Good Ridin'
slmjim & Z1BEBE
A biker looks at your engine and chrome.
A Rider looks at your odometer and tags.

1973 ('72 builds) Z1 x2
1974 Z1-A x2
1975 Z1-B x2
1993 CB 750 Nighthawk x2
2009 ST1300A

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  • Kray-Z
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13 Sep 2016 23:38 #742161 by Kray-Z
Replied by Kray-Z on topic Engine skips / cuts out around 2000rpm
Bad crank triggers, the little hall effect switches under the right side crank end cover - intermittent failures that get worse over time. Mine would run fine for a while, then two cylinders, back to four, then none...

Check for spark - pull all the leads and put in spare plugs grounded to the head and crank the engine...make sure the kill switch is at "run"....

No sparks, but coils test good and 12V power to the primary side... time to buy a Dyna S ignition, 3 ohm green coils, and wires....
2-04 R1, 81 CSR1000, 81 LTD1000, 2-83 GPz1100, 3-79CBX, 81 CBX, 3-XS650, 84 Venture, +parts
Quote "speed costs money...how fast do you want to go?" (Which Z movie?)
Universal formula for how many motorcycles one should own = n + 1, where n is how many motorcycles you own right now....

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14 Sep 2016 04:05 #742165 by KZP1000
Replied by KZP1000 on topic Engine skips / cuts out around 2000rpm
Those are called pick up coils right? Thanks that was my next thought.

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14 Sep 2016 05:13 #742171 by slmjim+Z1BEBE
Replied by slmjim+Z1BEBE on topic Engine skips / cuts out around 2000rpm

KZP1000 wrote: Those are called pick up coils right? Thanks that was my next thought.


No.

Spark plugs.


Good Ridin'
slmjim & Z1BEBE
A biker looks at your engine and chrome.
A Rider looks at your odometer and tags.

1973 ('72 builds) Z1 x2
1974 Z1-A x2
1975 Z1-B x2
1993 CB 750 Nighthawk x2
2009 ST1300A

www.kawasaki-z-classik.com
An enthusiast's forum focused exclusively
on all things Z1, Z2 and KZ900.

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14 Sep 2016 05:53 #742176 by Patton
Replied by Patton on topic Engine skips / cuts out around 2000rpm



Good Fortune! :)
1973 Z1
KZ900 LTD
Attachments:

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14 Sep 2016 06:20 #742185 by KZP1000
Replied by KZP1000 on topic Engine skips / cuts out around 2000rpm
Is the dyna system easy to install? I know NOTHING about electronics on a bike

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14 Sep 2016 06:22 #742187 by KZP1000
Replied by KZP1000 on topic Engine skips / cuts out around 2000rpm
I've replaced the plugs, wires and coils

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14 Sep 2016 06:32 #742191 by Patton
Replied by Patton on topic Engine skips / cuts out around 2000rpm

KZP1000 wrote: Is the dyna system easy to install? I know NOTHING about electronics on a bike


Very easy -- and you can do it. The "Igniter" (a separate component usually found under a side cover) is no longer used with Dyna-S.

Am uncertain of the exact igniter at hand, but here are several examples to which it's probably similar:




Good Fortune! :)
1973 Z1
KZ900 LTD
Attachments:

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14 Sep 2016 07:05 - 14 Sep 2016 07:07 #742195 by Patton
Replied by Patton on topic Engine skips / cuts out around 2000rpm

Patton wrote:


. . . .


The parts described as "Pick-Up Coils" are sometimes referred to as:
• Pick-Ups;
• Pick-Up Units;
• Pick-Up Sensors;
• Pick-Up Modules;

and perhaps other descriptive terminology I don't recall off-hand.

Good Fortune! :)
1973 Z1
KZ900 LTD
Last edit: 14 Sep 2016 07:07 by Patton.

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14 Sep 2016 11:30 #742212 by KZP1000
Replied by KZP1000 on topic Engine skips / cuts out around 2000rpm
Thanks for everyone's input. Its up and running like a top! Not sure what I did but I think the positive and negative wire on the left coil were reversed.

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