broke my throttle cable, so i loosen the carburetor and tilt it so the pin and stuff can get out, i try to fix it but it was unfixable so i left everything out but covered the carburetor with a piece of napkin and put away 4 days later new throttle cable came in and put everything back tighten everything bike starts but cant hold the idle it dies out and boggs and white smoke is coming out of the exhaust i checked everything what could be the problem i got gas i check the throttle nothing any help would be appreciated thanks in advance (crf50)2006