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1990 xt 600 won’t start 1990 xt 600 won’t start
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Yamaha Tech Originally the Yamaha XT600 Tech Forum, due to demand it now includes all Yamaha's technical / mechanical / repair / preparation questions.
Photo by Alessio Corradini, on the Salar de Uyuni, Bolivia, of two locals

I haven't been everywhere...
but it's on my list!


Photo by Alessio Corradini,
on the Salar de Uyuni, Bolivia,
of two locals



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  #1  
Old 18 Feb 2022
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1990 xt 600 won’t start
My bike sat outside covered for 2 months cause I was doing stuff in the garage. It was warm outside then started to get cold. Well took some time to get started but started I left the choke on for about 2 minutes then a little backfire then stalled. I tried starting but no good. It was my daily driver in NJ from March to November. Now I want to get her going now. Any suggestions. I do have a manual. The boots were changed a couple years ago and carb to were rebuilt. Also the bike ran good before it sat out side. Thanks for your help
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  #2  
Old 18 Feb 2022
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Dont worry i will help you! First remove sparkplug and check for spark testing this. If you have spark next i will check carb, remove and clean up, take out filter inside and clean, blow air all passages in carb, check carb joints again, if its china aftermarked they crack after one year.
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Old 18 Feb 2022
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I used oem on everything for this bike cause I heard stories. Will start there
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Old 2 Mar 2022
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Ok. Starting to work on this. Checked plug well installed new and felt a spark on my hand so I know there is spark. Took air cleaner off and put starting fluid in the box so the fluid can get into carb. Try starting just cranked. Any help
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Old 2 Mar 2022
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Well hold on I felt the spark but I don’t see a spark on the spark plug and it’s new cofusing
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Old 2 Mar 2022
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Battery?
My '89 did not like it's 2 year-old battery. It would turn over and spark with the old battery, but not fire up and run. New battery = it started.
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Old 2 Mar 2022
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Just checked the coil ok resistance 5 ohms now checked the coil and plug wire to neg of coil nothing also took of spark plug adapter I have no ohms either can both be bad. any help thanks
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Old 2 Mar 2022
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Trying to locate both coil and spark plug adapter. Forget any thing coming from Japan at least 3 months. Also do you think I am right with the testing also do you know what would work like a cross reference. Thanks
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Old 2 Mar 2022
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Quote:
Originally Posted by njenduro View Post
Trying to locate both coil and spark plug adapter. Forget any thing coming from Japan at least 3 months. Also do you think I am right with the testing also do you know what would work like a cross reference. Thanks
Search ebay for spares, i dont know about your reading. Insert plug in cap and hold it against ground, turn engine look for spark. Ebay search: yamaha xt 600 ignition coil
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Old 2 Mar 2022
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Question
I have a manual and used the ohm reading and only got reading on the primary on the secondary to the negative and the plug wire. Did try the plug to the head nothing Just orders a new coil and plug adapter for 113 dollars shipping too. They had It in stock. Am I doing something wrong. Thanks
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Old 2 Mar 2022
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Originally Posted by njenduro View Post
I have a manual and used the ohm reading and only got reading on the primary on the secondary to the negative and the plug wire. Did try the plug to the head nothing Just orders a new coil and plug adapter for 113 dollars shipping too. They had It in stock. Am I doing something wrong. Thanks
Always good to have on extra even if its not the problem, old bikes and electric components dont last forever, good luck!
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Old 2 Mar 2022
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Now I ohm it out and now it’s good getting puzzled now tried the spark plug no spark at the plug but I get wrapped. Any possibility that something is grounding out
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Old 2 Mar 2022
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I am getting fuel from the tank to the carbs. The bike sat for 2 months outside with a cover on it and tender on it. Took a bit to start but started then ran for about 2 minutes on choke then stalled tried to start and then she just cranked and that is it. Getting frustrated
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Old 2 Mar 2022
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If I do have Spark is there any way to see if gas is getting into carb to fire up
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Old 2 Mar 2022
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From the left side you should see a drain screw under the float bowl. See what comes out of there .
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