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mcgarrett · 06-09-2023, 08:34 AM

Remove the vacuum supply hose nearest to the wiper motor and introduce about an ounce or so of Marvel Mystery Oil directly into the vacuum port going into the motor. Operate the mechanism by hand and you should notice things start to free up. Re-attach the hose and operate the motor with its vacuum source. That should help get you going again.

06-09-2023, 08:34 AM	#2
mcgarrett Senior Member Join Date: Dec 2013 Location: Waxahachie, Texas Posts: 951	Re: Vac. Motor Remove the vacuum supply hose nearest to the wiper motor and introduce about an ounce or so of Marvel Mystery Oil directly into the vacuum port going into the motor. Operate the mechanism by hand and you should notice things start to free up. Re-attach the hose and operate the motor with its vacuum source. That should help get you going again.