alan oakes

need help.have 1988et 400t yamaha mint cont.sit for 5 years inside.cleaned carb.change fuel new spark plugs. it runs good wide open in the field but not so good at idle. it seems like a fire problem ,spark looks weak.could some one help.

mmrosshere

Sounds to me that the idle circuit may not be totaly clean or the adj may be out just a little

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84 srv 540 starting to mod
98 indy classic xlt 600
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smallengineguy

Clean the carbs again,like he said above, making sure you remove the pilot jet and clean that area well, use compressed air to blow it all out.

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1992 Ski Doo Mach 1 (SC-10/2 suspended) March '07 SF.com Sled of the Month!
1993 Ski Doo Mach Z 780 triple
2001 Ski Doo Mini Z



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