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Engine Not firing, suspected carb issue
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Multimeters are cheap; you can get a good one for around $20 and they are essential for troubleshooting these bikes.emptypond wrote: I have suppressed wires (Dyna), with the caps on the spark plugs and the 3ohm green dyna coils, with the dyna s ignition. My voltmeter is broken and I haven't picked another one up yet.
1983 GPz 750
810 Wiseco, Kerker, K&N, DynoJet S3, Accel, Progressive, etc.
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#2 is lighting the lamp, the other 3 are not.Motor Head wrote: Spark Plug #?
Those Dyna wires are suppression wires with plain caps built in. As long as he is using the standard NGK B8-ES plugs he is electrically correct.
With no multimeter, checking the color of the spark is a quick check. It should be blue or white. Red or yellow is a bad thing.
1983 GPz 750
810 Wiseco, Kerker, K&N, DynoJet S3, Accel, Progressive, etc.
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81 kz750 frame, with an 83 kz750 engine.
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1983 GPz 750
810 Wiseco, Kerker, K&N, DynoJet S3, Accel, Progressive, etc.
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81 kz750 frame, with an 83 kz750 engine.
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81 kz750 frame, with an 83 kz750 engine.
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It is good to hear that you went through your harness already, that is one step accomplished.
If you are not getting enough voltage, that is normally an indication of the rectifier/stator not inputting enough AC voltage. While it is possible that the regulator side could experience a diode failure, causing low voltage, the likelihood is low.
In any case, you absolutely must get a multimeter and check out both the stator AC voltage and regulator DC voltage.
1983 GPz 750
810 Wiseco, Kerker, K&N, DynoJet S3, Accel, Progressive, etc.
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You use the DC voltmeter in your multimeter. Patton or 650ed probably have a link to a test document. Basically, you check DC voltages at various engine speeds.emptypond wrote: If my regulator is bad, how would I check?
This question is the subject of an entire thread, which I have not introduced in this forum. There is a new type on the market which is much improved over our shunt-style regulators.emptypond wrote: And what kind should I get to replace the stock one with the setup I currently have?
1983 GPz 750
810 Wiseco, Kerker, K&N, DynoJet S3, Accel, Progressive, etc.
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emptypond wrote: If my regulator is bad, how would I check? And what kind should I get to replace the stock one with the setup I currently have?
It is important to know which model bike your engine is from because not all 1983 KZ750 models used the same charging system parts. Here are the 1983 KZ750 models; do you know which one you engine is from? Ed
KZ750-F1 (LTD Shaft) (1983)
KZ750-H4 (LTD) (1983)
KZ750-K1 (LTD Belt) (1983) (2 cylinder)
KZ750-L3 (1983)
KZ750-N2 (Spectre) (1983)
1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
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81 kz750 frame, with an 83 kz750 engine.
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battery- 12.7 (probably need a new battery, but I just bought this one 3 days ago)
I couldn't find clear instructions as to how to test the regulator.
I'm having a difficult time testing the coils. I'm thinking the sparks are yellow, and not bright white, as opposed to what I said last night, thinking they were actually white.
81 kz750 frame, with an 83 kz750 engine.
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Run this Quick Test for the output voltage of your regulator. If you pass this, your charging system is fine.
Run the Coil Test part of this document to test your coils.
1983 GPz 750
810 Wiseco, Kerker, K&N, DynoJet S3, Accel, Progressive, etc.
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