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post #1 of 6 (permalink) Old 03-11-2019, 03:38 PM Thread Starter
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i need help

so i have a 1993 formula stx rotax 583 ski doo and i don't know why it wont start the carboraters are getting good replaced feul. the spark plugs have good spark but it just wont turn over i even tried using starter fuel and it still wont even fire i need help I've been trying for days. there used to be frozen water in the gas tank but i got it all out and i'm positive i got it all out it. is not heated though i did put a mixture of two stroke oil and a gallon of gasoline in the tank the first time then another gallon of gasoline with fuel line cleaner mixed but it wont even turn over i need help.
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post #2 of 6 (permalink) Old 03-11-2019, 04:41 PM
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We're going to need a little information. First, I'm assuming the STX manufacture date is 93, which makes it a 94 (first year of the STX). Second, have you done a compression test? Third, do you have bright blue spark on both cylinders? Plugs look good and gapped correctly? We need spark, compression, and fuel to run.

Think Snow!
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post #3 of 6 (permalink) Old 03-12-2019, 11:11 PM Thread Starter
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yes it is a 1993 stx second i have not done a compression test and third what do you mean by bright blue spark on both cylinders plugs are good and gapped at .016
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post #4 of 6 (permalink) Old 03-13-2019, 07:03 AM
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Sorry, but if it's an STX, it's either a 94, a 95, or a 96 as those were the only years they made them. As far as the spark, you'll need to pull them out of the engine, plug them back into the wires, and set them on the head making sure they make contact with bare metal. Then pull the engine over and you should see a nice blue spark on both plugs. A compression test would be handy because if your compression is low, you'll never get it to start.
By the way, welcome to the forums.

Think Snow!
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post #5 of 6 (permalink) Old 03-13-2019, 03:15 PM Thread Starter
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thank you for your help the spark plugs are brand new and they have a perfect spark so i probobly need a compression test
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post #6 of 6 (permalink) Old 03-15-2019, 03:55 AM
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My friend had the exact same ski doo but sold it three years ago. Wish you the best of luck!

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Victoria
https://www.victoriasolarpower.com/
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