Re: 1990 Motor home with 460 engine!
has it been sitting for a few years? maybe a valve isnt closing, do a compression test to make sure the engine is mechanically sound.also put a vacuum gauge on it while its running, that will tell you if theres a valvetrain or blocked exhaust problem, does it have a catalytic converter?
68 Ford Country Sedan Wagon-390 FE, C6, 9 Inch
87 Chevy Caprice Classic Wagon-307, 2004R, 10 Bolt, what can i say, i grew up with that car