icanfixall
Official GMM hand model
For those that never knew this line on the return from the top of the injection pump had an olive hidden in it.. Now you know. Also note that if the same olives are hard in the line from the lift pump to the filter inlet is hard.. so is this one as is both ends of the filter to injection pump inlet. See where the brass fitting with the three hoses are on it. that long piece has an olive in the end of it. If your engine has this steel hard line running down the drivers side of the intake manifold then you have this problem waiting to leak. http://www.ebay.com/itm/182162591942?_trksid=p2055119.m1438.l2649&ssPageName=STRK:MEBIDX:IT