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GS1000G Running on 1, 2, and 4 Number 3 remains dead

  • Thread starter Thread starter Guest
  • Start date Start date
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Guest

Guest
Replaced plug twice, cleaned carbs twice now. All the same jets etc. Compression as follows: 1 = 140psi, 2 = 130psi, 3 = 130psi, 4 = About 135psi - all 4 cylinders still within Suzuki specs. Bike runs on the mentioned three cylinders only. Number 3 plugs come out wet every time I check.

Put number 2 HT lead on 3 and number 3 HT lead on 2 but still same result.

Valve clearances was done a week ago and got most of them to about 0.05mm clearance so I do not believe that it is valve clearances. The number 4 inlet valve clearance is slightly over 0.08 mm because I cannot find a thicker shim to bring it down.

Even if there is a slightly burned valve on 3, it should still run with the usual misfire that goes with it

Anyone ever had such a problem? - maybe time for the junkyard?
 
Found the problem. When removing carbs I always put a piece of rag into the inlet to ensure nothing gets in there while I am working on the carbs. For some dumb reason, I did not remove the rag on cylinder 3
So please do make fun of me, I have it coming:cool:
 
Ha !

Good that you found it.

So your description of the problem could have said "this all started after the last time I put the carbs back on".

Good troubleshooting. You checked compression, and swapped plugs and swapped sparkplug leads, and observed symptoms stay on same cylinder. ....and concluded must be carb related. . . and you were correct.
 
One issue you gave yourself now though are those valve clearances. You want them at the upper end near .08mm and NOT .04 or you could be replacing valves soon
 
Danie.e said:
Found the problem. When removing carbs I always put a piece of rag into the inlet to ensure nothing gets in there while I am working on the carbs. For some dumb reason, I did not remove the rag on cylinder 3
So please do make fun of me, I have it coming:cool:
Click to expand...

Ah, your just the 363rd member to make that mistake
 
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