I have a 96 GMC 3/4 ton P/U 5.7L-128000 miles. My engine knocks really loudly upon start-up but goes away after it's warmed up. I also have a front intake manifold leak(Could this be the cause for the knocking?) ...what needs to be removed to do an intake manifold job? Thanks!!
Nov 3, 2007 at 10:21 PM