bznchris Posted November 24, 2009 Share Posted November 24, 2009 Hey all, I recently picked up an 81 xs400 that the previous owner had begun converting to a cafe racer. I'm continuing with the conversion, but need to straighten out some other issues first. One cylinder will fire when in higher rpms but not while idling. I thought this would be an issue with the main jet, but after a thorough cleaning of the carbs, it still happened. Then I turned to the leaky exhaust, fixed the leaks, and it still happened. I have noticed that the diaphragm of the corresponding carb has some pinhole leaks, so maybe at idle there isn't enough vacuum for it to run? Anyways, replacement diaphragms are as expensive as complete used carbs, so i was considering other options as far as new carbs- aftermarket? The head also leaks oil substantially, could this contribute to the problem? And yes, the cylinder is getting spark. Second, I'm having charging issues. After riding for 20 minutes or so, the battery will completely lose it's charge, and the bike will die in lower rpms and not have enough juice to start back up. I replaced the battery thinking I had a bad one but it still happens. AC generator problems? And I have all the manuals associated with this bike, but i'm having a hard time pinpointing the exact cause of these problems. Any help or ideas would be appreciated! Chris Quote Link to comment Share on other sites More sharing options...
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