OK both coils are good and cyl# 2-3 arent firing

[hkspwrsche]

You may remember my problem from such great threads as "test-coils" say it three times fast.

http://www.thegsresources.com/_forum/showthread.php?t=170364

I have 23k ohms across the secondary and 3-4 ohms on both primary. Seems they would actually fire a bit hot when they work. The # 2-3 cylinders are not firing. My next avenue I think is going to be replacing the battery. I have read that this can be an issue when weak and this one is less than 100%. So I'll put in the battery and make sure I'm getting full 12.6 to the coil. Really hope that works .

If that doesnt work I'll update and try to figure out how to test my 2-3 cylinder coil for signal if it has plently of power.

If no signal is the problem I guess the next step is the RR area?

Thanks brothers

[hkspwrsche]

Oh and 77 gs750 again for reference and those that didnt want to go to the old thread.

[Ola]

Can you swap the coils over? Change the inputs to the coils and change the leads to the sparkplugs. If 1-4 stops firing, it's the coil. If 2-3 still isn't firing, it's the signal.

[chef1366]

Swap the coils. If the problem moves with the coils than replace the coil. If not check the points.

[hkspwrsche]

Guess I would swap the coils leads and the signal wire. Will give it a try.
So the ohm test isn't definite for the coils? I shouldn't suspect my 7 volt reading battery first?

[Steve]

Suspecting your 7 volt battery is a good first step.

Check your coils with a good 12 volt battery.

If they still don't work as they should, remove the coils, remove the wires from the coils, swap the wires from coil to coil, then try again.
If the problem moved with the coil, your coil is your problem. If the problem is still with 2&3, look for something else.

.

[old_chopper]

Suspecting your 7 volt battery is a good first step.

Check your coils with a good 12 volt battery.

If they still don't work as they should, remove the coils, remove the wires from the coils, swap the wires from coil to coil, then try again.
If the problem moved with the coil, your coil is your problem. If the problem is still with 2&3, look for something else.

.

Agree 100%

[chef1366]

Suspecting your 7 volt battery is a good first step.

Check your coils with a good 12 volt battery.

If they still don't work as they should, remove the coils, remove the wires from the coils, swap the wires from coil to coil, then try again.
If the problem moved with the coil, your coil is your problem. If the problem is still with 2&3, look for something else.

.

Sound advice

[hkspwrsche]

I kinda hoped the ohm test was pretty definitely going to tell me.

[1948man]

So is 23K ohms for the secondary good enough. I have the same resistance on mine instead of 30-35K ohms.

[Nedrik536]

This sound very similar to the fault i have just fixed on my 79 750. After hunting around and making it a lot more complicated than i needed to. I discovered that one of the contact breaker wires had snaped most of the strands inside its plastic. use a test lamp to check the continuity of the wires rather than a meter.