My fleetwood has been gradually losing power for about 6 months now. I didn't think too much about it because it has been in very small increments until just recently. Now pushing the gas seems to bog the engine down and there is little to no acceleration. There is also a problem with starting the car. It will turn over and then promptly sputter and die or if I manage to gingerly work the throttle at the right time, it will start in weak surges. Any thoughts?