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kz750 no spark?
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Is there full battery voltage at each ignition coil primary terminal?kwnics wrote: I replaced bad ignition coil but now I have no spark. Everything is testing fine except one side of dyna s ignition is low ohms. Any help would be much appreciated. Thank you in advance.
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1973 Z1
KZ900 LTD
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Does this mean that the two outside spark plugs #1 and #4 are sparking (with their plug wires connected to the same ignition coil), and that the two inside spark plugs #2 and #3 are not sparking (with their plug wires connected to the other ignition coil)?kwnics wrote: Okay I have 12v going to coils now only 1 and 4 are sparking?
What ignition coils are fitted (stock; Dyna; other)?
What spark plug wires are fitted (stock; Dyna; other)?
To aid diagnosis, could swap wires from Dyna-S between ignition coils to see whether only 2 and 3 are then sparking.
If not already done, could re-test for spark, using new spark plugs, or swap the spark plugs around to see whether it makes any difference as to which plugs spark.
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1973 Z1
KZ900 LTD
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There is 4 brand new spark plugs and the wires are testing good.
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1981 KZ550 D1 gpz.
Kz550 valve train warning.
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Will bike still run with only 2 plugs sparking -- Yes, usually, but not very well, and probably barely good enough to out-run an older Harley.kwnics wrote: The dyna was on there when I bought it. My coils read around 3 ohms resistance. Will bike still run with only 2 plugs sparking. And can I run both coils off one wire from dyna or will that mess things up?
can I run both coils off one wire from dyna -- No
or will that mess things up? -- Yes
Each ignition coil has its own independent "secondary loop" including the secondary winding, both plug wires, plug cap on each plug, the spark plugs themselves, and the metal engine head.
Lost conductivity in the secondary loop disallows spark on both plugs within the loop.
For example, a faulty connection between a plug wire and cap could cause a "break" in the secondary loop.
Has the non-firing secondary loop been ohm-tested between the caps to determine whether there is a "break" within the loop?
Good Fortune!
1973 Z1
KZ900 LTD
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