Vacum wipers slow

[Ford coupe]

Is there any way to speed up the vacum wipers on my 55.Probably needs to be rebuilt or?? Cani spray something in the lines?Thnks

 

[Ole Don]

Look for vacuum leaks in the hoses, and use Rainex.

 

[streetdreams]

Filling the vacuum motor with mineral spirits and ATF, letting soak and then draining has helped some in the past.

 

[BOSSY]

With the motor running and the wipers on, put a hose on the bottom hose fitting, this is the intake for wipers, not the vacuum hose to intake, put a small cup of brake fluid on floor and put the hose into it, the motor will suck the brake fluid through the wiper motor and clean and lube it and goes into the intake and burns and out the tail pipe. Works for me.