Re: Bad fuel economy
Ya, know it has been so long since I have seen this problem I forgot about the pump leaking inside instead of out the weep hole. Have you also checked the bilge area for gas?<br /> Yes, the pump can bypass the inner seal and leak into the engine.<br /><br /> What year engines, what type of Carbs?<br /><br /> You have changed the gassy oil, right ?<br /><br /> Do the engines idle smoothly and run at speed smoothly? If it is flooding through the carb, that much gas should make the engine run poorly, smoke, etc.<br /><br /> How long of a trip 1hr, 8hr, full speed or 3/8 throttle?<br /><br /> Pull a spark plug from each engine, are they black and sooty ? Time for a carb rebuild, but use marine carb kits.<br /><br /> If the plugs look normal (grayish) replace the fuel pumps, but this is wierd why both engines at the same time or did one do it and the other started shortly after.<br /><br /> Yes, the machining plugs can leak, but in my experience they will cause vaccuum leaks resulting in poor idle but not excessive gas.<br /> <br /> The poor starting (after sitting) may be attributed to a leaking or bad accelerator pump on the carb requiring you to pump the throttle after cranking or crank for extended periods until the engine receives enough gas to start. <br /><br />Let me know what you find.
