Appreciate advice on a couple of point for a, formerly good running, twin carb 3.5. It's taken to running extra rich, black fog trailing behind, and won't go over 50 mph. Something is stuck of clogged. I'm thinking float valve or piston. First, does it sound like something accessible from...

Hello. I'm in central California. Kind of a car nut. In recent years I've amassed a nice accumulation of Series Rovers - I, IIa, III, and Stage 1 V8. I'd call it a collection if they were in better condition. Two I brought back from UK, two bought here. The '57 in the pic is the best of...