4000-5000 RPM glitch

[aviationfred]

Just throwing something out there..... Being as this problem is on an 86' and gravity fed, could there be a pinched/obstructed fuel line? At lower rpm's the engine has sufficient fuel and once the RPM's get higher and the engine is demanding more fuel, there is starvation....

Fred

[JPaganel]

That's a thought. I'll check for hose routing.

It occurred to me that maybe I should pull out the choke when it does this, to see if there is any effect. And when I decided to try that it didn't do it the whole way home.