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Author Topic: 1976 CB550F "Barn Find"  (Read 20631 times)

Offline snmavridis

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Re: 1976 CB550F "Barn Find"
« Reply #100 on: Mar 22, 2018, 15:40:41 »
It looks like it's in reverse order. But I have the wires connected up to the proper coils 🤔

Offline Maritime

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Re: 1976 CB550F "Barn Find"
« Reply #101 on: Mar 22, 2018, 16:26:12 »
Are any of your connections on the points making contact with the plate? I had a similar issue when timing my GL and found when I had tightened up the nut on the wire it spun a bit and bent the connector to make contact, it was grounded all the time and I spent way too long trying to get the light to go out on one cylinder until I found that, adjusted it and then everything was good.
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Offline teazer

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Re: 1976 CB550F "Barn Find"
« Reply #102 on: Mar 22, 2018, 16:27:28 »
You could just swap the yellow and blue leads and see if that fixes things. It is possible that the points cam is on 180 degrees out where it fits on the advance weights.

Offline snmavridis

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Re: 1976 CB550F "Barn Find"
« Reply #103 on: Mar 22, 2018, 16:32:00 »
Are any of your connections on the points making contact with the plate? I had a similar issue when timing my GL and found when I had tightened up the nut on the wire it spun a bit and bent the connector to make contact, it was grounded all the time and I spent way too long trying to get the light to go out on one cylinder until I found that, adjusted it and then everything was good.
It doesn't seem like it's grounding out... But I'll continue chewing on that.

Offline snmavridis

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Re: 1976 CB550F "Barn Find"
« Reply #104 on: Mar 22, 2018, 16:33:09 »
You could just swap the yellow and blue leads and see if that fixes things. It is possible that the points cam is on 180 degrees out where it fits on the advance weights.
I'll give that a go. The advance weights are the spring loaded bobbit behind the points plate attached to the cam right? Maybe I put it on the wrong way? How could I tell?

Offline teazer

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Re: 1976 CB550F "Barn Find"
« Reply #105 on: Mar 22, 2018, 16:38:12 »
I think they have a line on the cam that has to be up at a certain TDC.  An easier way is to bring the motor up to TDC valves closed on #1 and see where the cam is.  If the points are just breaking open for 1-4, you are OK.  If they are wide open, the cam is upside down.

Offline snmavridis

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Re: 1976 CB550F "Barn Find"
« Reply #106 on: Mar 22, 2018, 16:48:22 »
Do you see anything wrong with this?

Offline snmavridis

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Re: 1976 CB550F "Barn Find"
« Reply #107 on: Mar 22, 2018, 16:53:36 »
Just flipped the lobe. P1-4 start the light at f1-4

Offline snmavridis

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Re: 1976 CB550F "Barn Find"
« Reply #108 on: Mar 22, 2018, 16:54:48 »
Guys. I think that did it.

Offline john83

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Re: 1976 CB550F "Barn Find"
« Reply #109 on: Mar 22, 2018, 16:57:45 »
Gap too loose and points opening way too early?

Donít run fuel from that tank through your carbs until you sure if itís a liner/if itís in good shape. Pour fuel in it and run it into a bucket through a strainer or something see if there are any chunks in there. If all looks well run a good inline filter.

If theyíre over flowing then float height could be off, needle valves or seats could be bad, floats could have holes in them. Are the bowl drains closed?


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