Question about 1979 Yamaha XS 500

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1985 VIRAGO 500 It sputters. The front plug was black. I had the carbs cleaned. It ran fine for 30 minutes then sputtered again. Now the back plug is black and the front is fine. Was wrong with it?

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David Belcher

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Try new spark plug caps. They unscrew off the end of the wires. With a voltage meter they should measure 5000 OHMs , anything higher or lower and you replace them. NGK plugs are about $5 each.

Posted on Sep 25, 2010

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