First post. '75 Midget, 1500 engine, owned since '81. Mileage somewhere south of 50,000...odo/speedo inop. Weber carb installed less than 500 miles ago. Runs great with one exception: When I stomp down on it at less than about 3,500 RPM, it stumbles for a bit, then catches. If I accelerate slowly, no problem.
My first thought is accelerator pump but you'd think a new carb wouldn't have that problem. Thought I would check with y'all before I started tearing things apart.
The stumble is rough, sounds fuel-related rather than electrical. Filters are clean and plenty of gas is getting to carb via an electric fuel pump (got real tired of replacing mechanical ones). Plugs are the right color and heat range. Can't imagine how timing, wires or points would do this but it wouldn't be the first time I was barking up the wrong tree.
TIA,
Jim in South Texas
My first thought is accelerator pump but you'd think a new carb wouldn't have that problem. Thought I would check with y'all before I started tearing things apart.
The stumble is rough, sounds fuel-related rather than electrical. Filters are clean and plenty of gas is getting to carb via an electric fuel pump (got real tired of replacing mechanical ones). Plugs are the right color and heat range. Can't imagine how timing, wires or points would do this but it wouldn't be the first time I was barking up the wrong tree.
TIA,
Jim in South Texas