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Kz1000p No Spark but Randomly Starts 01 Feb 2015 08:18 #660295

  • krootsj
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After 3 months of riding this bike I am not getting spark from any of the plugs. The odd thing is the bike will randomly start like nothing was ever wrong. the idle is a little off but other than that once its on it runs as good as it did before. The problem got worse and I haven't been able to start it of late. I checked the power to the coils and I get nothing. I'm assuming the problem lies within either the IC ignitor. I should mention the starter is spinning the engine with no issue at all. Before i go out buying a part i want to get some more experienced opinions.

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Kz1000p No Spark but Randomly Starts 01 Feb 2015 11:12 #660306

  • spdygon
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i would look at the manuel and trace the electrical leading to the coils.
could be a simple bad connection.
1982 GS1000sz Katana ( #15...17K Miles)
1982 GS1000sz Katana ( # 297....7100k Miles)
1978 Kz1000 Z1R. 10K Miles1
1978 kz1000 z1r 27k miles
1977 KZ 1000 A ( Project ) 54K Miles
1976 Kz900A4 (Red)21K miles
1976 Kz900A4 ( Red)7500 miles
1974 Z1 900 project

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Kz1000p No Spark but Randomly Starts 01 Feb 2015 15:21 #660327

  • MFolks
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Unscrew the sparkplug caps from the sparkplug wire(or high tension leads). Using a multimeter, test the 5000 ohm resistor inside the caps, as heat, vibration, and just age, will cause them to fail. New ones are usually available at the local Japanese motorcycle shops, or at www.z1enterprises.com

This is a straight one, but other angled ones are sold here too:
www.z1enterprises.com/ItemDetails.aspx?i...SB05F&item=TU38-1005
1982 GPZ1100 B2
General Dynamics/Convair 1983-1993
GLCM BGM-109 Tomahawk, AGM-129A Advanced Cruise Missile (ACM)

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Kz1000p No Spark but Randomly Starts 01 Feb 2015 15:24 #660328

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You also need to check the condition of the soldered joints inside the left and right "Switch pods" on the handlebars, as there has been reports of this factory job, was marginal at best. Look inside the headlight housing too, as a majority of the main harness electrical connectors, are there.
1982 GPZ1100 B2
General Dynamics/Convair 1983-1993
GLCM BGM-109 Tomahawk, AGM-129A Advanced Cruise Missile (ACM)

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Kz1000p No Spark but Randomly Starts 12 Feb 2015 08:55 #661390

  • Tripleted
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These bikes need a good battery with a full charge to start the stock ignition system. If your battery is not perfect, replace it for $40.

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Kz1000p No Spark but Randomly Starts 12 Feb 2015 15:11 #661418

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. I checked the power to the coils and I get nothing.

That's your problem, intermittent open circuit on ignition live feed to coils. The IC ignitor grounds the coils every time they need to spark , the live permanently feeds the coils and ignitor box when ignition is on..

Easy no tool method : Get it running, then wiggle the wiring loom. particularly around the ignition switch and RH switchgear engine run/off/run switch - if you can make it cut out that will help you trace the area of the problem.
You should have a separate fuse for the ignition on that 1000P, check you have power there.

Don't try throwing money at this with new IC ignitor, coils etc...your problem is a no power supply to ignition.

These do like a decent battery charge for starting, and I'd agree - but the 'intermittent' nature of this suggests a wiring fault.
1980 Gpz550 D1, 1981 GPz550 D1. 1982 GPz750R1. 1983 z1000R R2. all four aces

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