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Author Topic: Slow crank.  (Read 10359 times)

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Offline Badluckhonda

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Re: Slow crank.
« Reply #50 on: May 15, 2015, 11:29:08 AM »
Might be time for a battery
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Offline Sdsbassist

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  • Gus, Austin, MN.
Re: Slow crank.
« Reply #51 on: May 15, 2015, 01:28:52 PM »
Brand new. When i uncooked hooked the green red from the harness, would that need to be 're grounded (or energized) as a safety switch of any kind?
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Gus, Austin, MN.
Current Bike:  75 750F

Past bikes: 76 750K - "Iowa Blue",78 750K Craigslist find - "Black Beth;" 77 CB750K Basketcase, with a 75K engine; 1970 Cb750 K1, "Rosa Luxembourg"
74 cb750, 75 cb550, 77 kawa 650, 81 virago 750, 83 virago 920, 80 Honda Twinstar 200, 71 Honda CT70, 1971 Honda CB750 Rat Project "Black Dahlia Bitsa"

Offline Badluckhonda

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Re: Slow crank.
« Reply #52 on: May 15, 2015, 01:33:11 PM »
I don't know a lot about the color codes for the Honda. Just know a bit about wiring and some bikes did have safety switches, E.A it possible that the solenoid only gets power of the bike is in neutral. If it was working and then you plugged it back in to the stock harness that could be it
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Offline Sdsbassist

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  • Gus, Austin, MN.
Re: Slow crank.
« Reply #53 on: May 15, 2015, 01:43:25 PM »
Gotcha will do and let you know. If that is the issue when i want to to be grounded or powered?
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Gus, Austin, MN.
Current Bike:  75 750F

Past bikes: 76 750K - "Iowa Blue",78 750K Craigslist find - "Black Beth;" 77 CB750K Basketcase, with a 75K engine; 1970 Cb750 K1, "Rosa Luxembourg"
74 cb750, 75 cb550, 77 kawa 650, 81 virago 750, 83 virago 920, 80 Honda Twinstar 200, 71 Honda CT70, 1971 Honda CB750 Rat Project "Black Dahlia Bitsa"

Offline Sdsbassist

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  • Gus, Austin, MN.
Re: Slow crank.
« Reply #54 on: May 15, 2015, 01:48:32 PM »
Cranked it over. No spark. Pulled in clutch lever, no spark. Must've been a switch of some kind! Guessing it needs a ground.
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Gus, Austin, MN.
Current Bike:  75 750F

Past bikes: 76 750K - "Iowa Blue",78 750K Craigslist find - "Black Beth;" 77 CB750K Basketcase, with a 75K engine; 1970 Cb750 K1, "Rosa Luxembourg"
74 cb750, 75 cb550, 77 kawa 650, 81 virago 750, 83 virago 920, 80 Honda Twinstar 200, 71 Honda CT70, 1971 Honda CB750 Rat Project "Black Dahlia Bitsa"

Offline Sdsbassist

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  • Gus, Austin, MN.
Re: Slow crank.
« Reply #55 on: May 15, 2015, 04:54:56 PM »
So tried again...here wire that's left hanging. Tried grounding it...no change. Still no spark but cranks over awesome
« Last Edit: May 15, 2015, 05:03:40 PM by Sdsbassist »
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Gus, Austin, MN.
Current Bike:  75 750F

Past bikes: 76 750K - "Iowa Blue",78 750K Craigslist find - "Black Beth;" 77 CB750K Basketcase, with a 75K engine; 1970 Cb750 K1, "Rosa Luxembourg"
74 cb750, 75 cb550, 77 kawa 650, 81 virago 750, 83 virago 920, 80 Honda Twinstar 200, 71 Honda CT70, 1971 Honda CB750 Rat Project "Black Dahlia Bitsa"

Offline Sdsbassist

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  • Gus, Austin, MN.
Re: Slow crank.
« Reply #56 on: May 15, 2015, 05:41:03 PM »
Tried old plugs too. Nothing. Started looking at wires going into coils with test lights...do they ever get constant power? Or only when elec ignition tells it too? Hoping im still just not completing a safety circuit somewhere.
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Gus, Austin, MN.
Current Bike:  75 750F

Past bikes: 76 750K - "Iowa Blue",78 750K Craigslist find - "Black Beth;" 77 CB750K Basketcase, with a 75K engine; 1970 Cb750 K1, "Rosa Luxembourg"
74 cb750, 75 cb550, 77 kawa 650, 81 virago 750, 83 virago 920, 80 Honda Twinstar 200, 71 Honda CT70, 1971 Honda CB750 Rat Project "Black Dahlia Bitsa"

Offline Badluckhonda

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Re: Slow crank.
« Reply #57 on: May 15, 2015, 06:04:31 PM »
I think they get constant power fr one of the wires. Lookup the wiring schematic for you bike man
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Offline Sdsbassist

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  • Gus, Austin, MN.
Re: Slow crank.
« Reply #58 on: May 15, 2015, 06:15:34 PM »
Gotcha. The P.O. has roasted my harness.
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Gus, Austin, MN.
Current Bike:  75 750F

Past bikes: 76 750K - "Iowa Blue",78 750K Craigslist find - "Black Beth;" 77 CB750K Basketcase, with a 75K engine; 1970 Cb750 K1, "Rosa Luxembourg"
74 cb750, 75 cb550, 77 kawa 650, 81 virago 750, 83 virago 920, 80 Honda Twinstar 200, 71 Honda CT70, 1971 Honda CB750 Rat Project "Black Dahlia Bitsa"

Offline Sdsbassist

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  • Gus, Austin, MN.
Re: Slow crank.
« Reply #59 on: May 15, 2015, 06:27:33 PM »
Guessing its one of the blacks/white but need to find out for sure
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Gus, Austin, MN.
Current Bike:  75 750F

Past bikes: 76 750K - "Iowa Blue",78 750K Craigslist find - "Black Beth;" 77 CB750K Basketcase, with a 75K engine; 1970 Cb750 K1, "Rosa Luxembourg"
74 cb750, 75 cb550, 77 kawa 650, 81 virago 750, 83 virago 920, 80 Honda Twinstar 200, 71 Honda CT70, 1971 Honda CB750 Rat Project "Black Dahlia Bitsa"

Offline Sdsbassist

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  • Gus, Austin, MN.
Re: Slow crank.
« Reply #60 on: May 15, 2015, 09:24:01 PM »
Ok so traced wires from dyna ignition and its been installed exactly as instructed. I am getting no power at black/white wires (supposed to be 12v) would this indicate a safety switch problem? Im still thinking my red/green wire might be to blame
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Gus, Austin, MN.
Current Bike:  75 750F

Past bikes: 76 750K - "Iowa Blue",78 750K Craigslist find - "Black Beth;" 77 CB750K Basketcase, with a 75K engine; 1970 Cb750 K1, "Rosa Luxembourg"
74 cb750, 75 cb550, 77 kawa 650, 81 virago 750, 83 virago 920, 80 Honda Twinstar 200, 71 Honda CT70, 1971 Honda CB750 Rat Project "Black Dahlia Bitsa"

Offline Sdsbassist

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  • Gus, Austin, MN.
Re: Slow crank.
« Reply #61 on: May 15, 2015, 09:59:57 PM »
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Gus, Austin, MN.
Current Bike:  75 750F

Past bikes: 76 750K - "Iowa Blue",78 750K Craigslist find - "Black Beth;" 77 CB750K Basketcase, with a 75K engine; 1970 Cb750 K1, "Rosa Luxembourg"
74 cb750, 75 cb550, 77 kawa 650, 81 virago 750, 83 virago 920, 80 Honda Twinstar 200, 71 Honda CT70, 1971 Honda CB750 Rat Project "Black Dahlia Bitsa"

Offline Badluckhonda

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Re: Slow crank.
« Reply #62 on: May 15, 2015, 11:39:52 PM »
Like in not sure about Honda wiring I just made my own harness
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Offline Sdsbassist

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  • Gus, Austin, MN.
Re: Slow crank.
« Reply #63 on: May 16, 2015, 06:00:55 AM »
Sometimes a night does wonders. Checked toggle and nothing to black white. Reset connections and worked the toggle switch back and forth a few times and blame. Power to wires and spark like crazy. When the wife and kids get up i will get to start it now with timing set.

I also noticed that the blue wire leading to the coils from the dyna was unplugged...i might be firing on 4 cylinders today!
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Gus, Austin, MN.
Current Bike:  75 750F

Past bikes: 76 750K - "Iowa Blue",78 750K Craigslist find - "Black Beth;" 77 CB750K Basketcase, with a 75K engine; 1970 Cb750 K1, "Rosa Luxembourg"
74 cb750, 75 cb550, 77 kawa 650, 81 virago 750, 83 virago 920, 80 Honda Twinstar 200, 71 Honda CT70, 1971 Honda CB750 Rat Project "Black Dahlia Bitsa"

Offline Sdsbassist

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  • Gus, Austin, MN.
Re: Slow crank.
« Reply #64 on: June 03, 2015, 09:14:43 PM »
Button stopped working agau n today. Checked battery - 11.5 volts. Guessing a sol needs a good 12.5?

Pulled the battery and levels were super low
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Gus, Austin, MN.
Current Bike:  75 750F

Past bikes: 76 750K - "Iowa Blue",78 750K Craigslist find - "Black Beth;" 77 CB750K Basketcase, with a 75K engine; 1970 Cb750 K1, "Rosa Luxembourg"
74 cb750, 75 cb550, 77 kawa 650, 81 virago 750, 83 virago 920, 80 Honda Twinstar 200, 71 Honda CT70, 1971 Honda CB750 Rat Project "Black Dahlia Bitsa"

Offline Sdsbassist

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  • Gus, Austin, MN.
Re: Slow crank.
« Reply #65 on: June 04, 2015, 07:21:29 AM »
I think i screwed up when i filled it
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Gus, Austin, MN.
Current Bike:  75 750F

Past bikes: 76 750K - "Iowa Blue",78 750K Craigslist find - "Black Beth;" 77 CB750K Basketcase, with a 75K engine; 1970 Cb750 K1, "Rosa Luxembourg"
74 cb750, 75 cb550, 77 kawa 650, 81 virago 750, 83 virago 920, 80 Honda Twinstar 200, 71 Honda CT70, 1971 Honda CB750 Rat Project "Black Dahlia Bitsa"
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