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One of my two '81 Jag 4000's just lost spark. It would start up on 2 pulls, but bogged when I hit the throttle, so I figured old gas was the culprit ( I just bought these sleds and they havent been run for over a year) We replaced the fuel lines and filters, cleaned the carb, and gapped and installed new NGK's. Now it won't even cough, so I pulled the plugs and checked for spark. There was intermittent spark, then none. After letting it sit for a while, I checked again and the same thing, intermittent and then none. The other Jag has great spark, so I swapped out the CDI box, still nothing, and then the coil, and still nothing...arrrrgggggh! What should I do next? Please help...thanks!
 
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