150cc Cranking But No Start

[heysus]

I removed it and cleaned where the air comes in and out with rubbing alcohol. I've done no adjustments to it. The intake manifold is missing both screws holding it secure, so i think that may be the issue?

[Impaired]

Originally Posted by heysus

I removed it and cleaned where the air comes in and out with rubbing alcohol. I've done no adjustments to it. The intake manifold is missing both screws holding it secure, so i think that may be the issue?

So you're intake manifold isn't secure?
I assume that would create a pretty big vacuum leak which maybe why she isn't starting?

[heysus]

Originally Posted by Impaired

So you're intake manifold isn't secure?
I assume that would create a pretty big vacuum leak which maybe why she isn't starting?

I fixed the leak on the intake manifold, but it was the fuel/air ratio that was incorrect. It runs now! Thank you!

[blueboy5000]

Originally Posted by heysus

I removed it and cleaned where the air comes in and out with rubbing alcohol. I've done no adjustments to it. The intake manifold is missing both screws holding it secure, so i think that may be the issue?

You must have the intake securely fastened. A gy6 is so sensitive to intake vacuum, that even a slight crack in an intake manifold will cause a no-start condition.