got one of these https://www.vwheritage.com/shop/bay-bus/113127025D/fuel-pump-t1-t2-1-2-1-6-for-dynamo-rod-best-quality/?crumbStartPage=1&crumbStartRow=1" onclick="window.open(this.href);return false;
started the van and let it run for a good half hour, put it away went to do the same yesterday...