The hose that connects from cylinder head vent to back of engine keeps blowing off my necht 150cc quad and cutting it out why

SOURCE: 150 cc will not fire up

pull spark plug, lay it on engine while still connected and hit starter and see if any spark at plug. if so fuel issue,if sat for any lengthy period of time, pull carb. float bowl and clean bad fuel and resadew, unscrew brass looking jet and make sure clear,{should be able to blow air thru} ensure battery has full charge and should fire.

SOURCE: 50 cc quad started 3 times but after that it won't start it s trying it s best to turn over but it won't

check see if floats sticking in carb or jet bloked

mike kirschbaum

• 1198 Answers
• Posted on Nov 22, 2013

SOURCE: blows white smoke out of exhaust pipe

White smoke can be as safe as water vapor being blown out of your exhaust system, or your engine is sucking tranny fluid out of the transmission, if it's automatic. Even gas can show white or grey out the tailpipe sometimes, that just means you are accelerating too hard.
Check your transmission fluid. If it is low, have a mechanic find out why, tell him what you see. Otherwise, no big deal.