I installed a vacuum reservoir under the dash (made it from an empty propane canister - see the attached pic) in the hope that the reservoir would have enough vacuum to carry the wiper thru the full throttle events. I haven't tried it out yet. My fallback position is to install a fuel/vacuum pump. I just finished rebuilding one of those.
Kevin 1951 Chevy 3100 work truck Follow this saga in Project Journal Photos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together.