Re: 89 4.2liter carburator bogging problem
we did the bypass after putting a rebuilt holly carburator,because the old one seemed to be using too much fuel, but it seems at sometimes that it might not be opening up all the away at road speeds, and causing very poor gas mileage. the old carburator would get around 190-200 miles, the new one hasn't got above 150 miles and as low as 75 miles per tank. Do you have any ideas what this might be? thanks so much.