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GS1000 Cylinders 1 & 4 not firing

  • Thread starter Thread starter ceccorp
  • Start date Start date
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ceccorp

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I have a 78 gs1000 and the 1st and 4th cylinders haven't been firing. I changed the ignition coil and that didn't work. What else could cause these 2 cylinders to not fire. Is there a fuse for it? Any help would be greatly appreciated.
;)
 
Hi,

There's no fuse just for those two cylinders. Check your points and condensers. See the troubleshooting guides in the Electrical Odds and Ends section of my little website.


Thank you for your indulgence,

BassCliff
 
Reverse the Coil Wires!

Reverse the Coil Wires!

Hey-

Make sure your coil wires are in the proper order.
 
Ok I checked the points. Turns out it has the dyna ignition. It looks really new... What could go wrong here. I am pretty sure the wires are all good.
 
Lets see,
Could be a number of things.
Under the gas tank, there are four wires that feed to your coils, they are connected together with bullet splices. Two wires go to one coil and the other two wires go to the other coil.
Swap the two wires (I would mark your wires first prior to swapping them) from one coil to the other and vice versa. Once you do that, swap plug wires (I would mark them also prior to swapping them) 1 & 2 around and then 3 & 4, so that cylinder 1 has no 2 plug wire and cylinder 2 has no 1 plug wire, cylinder 3 has 4 plug wire and no. 4 cylinder has no 3 plug wire.
Then see if the problem stays with 1 & 4 or goes to 2 & 3.

I actually did this today on my GS1000, bike seemed to run better after I did it.
 
Check the actual wire going into both the male and female connectors.It may look fine but be broken and not attatched fully to the connector.. easy to cut and replace the ends. Unplug the black wire coming out of the coil and turn on the key and check for voltage coming out of the coil..if none then the coil is shorted internally. Replace the coil.
 
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