Back when your RV was new, some people would disable the anti-smog emission systems since these were thought to reduce power, mileage, and drive-ability (and many did just this). While some Ford RV owners here may have the information you need, also consider researching the internet for Ford engine or truck forums; where you should find lots of information about your engine.
Originally Posted by LittleBro
i have a 88 Ford mallard with a John Deere chasis and a 7.5l 460 engine and most of the vacuum hoses are missing or have screws in the connectors does anybody have any idea why someone would do this and what i should do to fix it or if it has modified somehow because some of the vacuum line are hooked up but id say 90% are missing
George Schweikle Lexington, KY
1999 Safari TREK 2830, FMCA 190830, Safari International chapter
1995 Safari TREK 2630, 1983 Winnebago Chieftain, 1976 Midas Mini