Twin 350Q's were working great until last week. Now the starbord engine sputters at 2500 RPM's under load. I noticed at high rpm's the overflow port on the bottom of the fuel pump is pushing air. Is this normal? I changed the points with an old extra set I keep as a spare and the low end RPM's were smooth but I can't get the RPM's past 2500 under load. I ordered the electronic conversion kit from Pertronix but I have yet to receive it. I think this is a fuel problem. Could it be an electronic problem? I don't think it is an ethanol problem like some have suggested since the port engine runs fine.
Thanks\JRR