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I purchased a 1977 Itasca that's built on a Chevy G30 van C&C that's got a 350.
I'm trying to get the cruise control to work, but can't seem to get vacuum up to the servo unit. I installed new hoses and all the electrical checks OK. I can get (blow) air thru the servo-hose into the regulator, but can't get any into the regulator from the motor/vacuum side.
Do I possibly have a plugged line inside the reg and what would be the fix. (Other than a new unit). Thanx
ken