1) (re: spiders/ wasp nest) VISUAL inspection/ cleaning of air mixture; remove if needed to inspect? 2) Attempt to light and allow to timeout 3-5 times to bleed any air in that section of piping. (Once air bled, should work fine.); 3) Listen for the click-click of igniter?
2000 Conquest LE 6266, Class-C on 99-E450SD, 6.8, 2v, V-10