Bryzan3

I think it is I think I am going to just tear the engine out and tear it apart I am thinking someone before me put something together wrong cause timing from the mark and valves seem right it should fire I have gas spark and great compression at least 150 psi  

Looking for advice on what to try next I bought this quad and it’s has spark and fuel but won’t stay running only fires when I hold the starter button in even when spraying gas into the carb it still dies right away oil was milky white so I was thinking it maybe went under water 150 psi compression so I might be wrong but not a head gasket I am stuck Cause it should stay running with the straight gas through the carb so what should I try 

Yes i did I just don’t understand why it won’t stay running if I am spraying gas directly into the carb When holding the starter in you could hear it start and  fire and rev up but when I let go of the starter button it just dies no matter how much gas i spray in 

Looking for advice on what to try next I bought this quad and it’s has spark and fuel but won’t stay running only fires when I hold the starter button in even when spraying gas into the carb it still dies right away oil was milky white so I was thinking it maybe went under water 150 psi compression so I might be wrong but not a head gasket I am stuck Cause it should stay running with the straight gas through the carb so what should I try