Question about 2000 Harley Davidson XL 1200 C Sportster Custom

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1996 1200 custom. let run to warm, and die's. gas in the tank does not matter.will fire, but not start.

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In 1996, Harley went to a vacuum operated petcock and these things do give problems. Take the air filter off the carb and with the engine off, crank the throttle wide open. Watch for fuel to squirt into the carb from the brass nozzle just inside the mouth of the carb. If no fuel squirts, your float bowl is empty, no gas is getting to the carb. You'll have to loosen the petcock and drain the tank by loosening the large nut and catching the fuel with a large funnel and an empty fuel can. Once the fuel is drained, you can remove the petcock. Remove the square plate on the rear of the petcock and remove the spring, the needle, and the diaphragm. Hold the diaphragm up to the light and gently stretch it looking for holes. If you find a hole replace the diaphragm. Blow through the petcock with some low pressure compressed air to verify that it is not plugged up and reassemble the petcock. If you have a hand operated vacuum pump, test the petcock to insure that it is functioning correctly. Personally, I suggest replacing these petcocks with a high quality manually operated petcock like a Pingel or you can purchase a new OEM one from Harley.

Good Luck
Steve

Posted on May 24, 2011

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