Snow blowers have a primer bulb that pushes air pressure in to an almost sealed carb very small vent hole,the air pushes fuel up through the jets & wets the carb.Now on a similar note take a windshield washer foot pump plumbed into an almost sealed plastic container again with a very small vent hole with two ports on it with one having a dip tube,mount the container in front of the rad support away from direct heat plumb with vacuum hose from foot pump to canister short port,plumb from canister port with dip tube to air filter using a partial vacuum hose to a small steel line that would squirt into the air filter some how,the principles the same & I suppose it could work build at your own risk.