Post by blazejin on Oct 16, 2016 8:05:43 GMT -5
VIP GY6 QMB139 I had installed 100cc BBk, everything went well for 2 weeks, ran fine and then I started hearing a popping noise like exhaust . come to find out it was a head gasket blown . So I re did the gaskets and checked the rings all was fine. so I put back together and it runs great . but now its started the same popping noise after 3 days like the head gasket blown again but only at over half throttle I get the popping noise . it wont crank with the elect. start but will crank fine with kick start, when hot it will crank with electric start. could it having a 2 stroke exhaust on the 4t cause a back pressure problem with that.i have adjusted valves multi times and same results I cant seem to wrap my head around it. Any and all help would be a plus. thanks everyone.
