All, I'm having a problem with an 1981 Mercedes Benz 380SL It seems to run relatively smoothly at idle (with a little irratic-ness) but on the highway, once you get it to speeds, it begins to hesitate as if it's not getting enough fuel.

I'm thinking there is a fuel blockage issue but the pump appears to be new.

When I put a c/o meter on, a 10 degree turn anti clockwise will result in moving the c/o mixture from 4% C/O to 0.2% C/O.

I purchased this car for a buddy who has to drive it to Wisconsin in a couple of days.

Any thoughts would be appreciated.

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With best regards

Al