How to bleed lt1 cooling system. Let the engine warm up. TPIS recommends a "packing" procedure to get out all the air, but that calls for the stat to be OPEN for full coolant flow. The guys at the shop have been bleeding it for over a couple of hours. Let coolant flow out of it for about 4 seconds (I couldn't tell if there was any air or not, coolant just came out). If you completely flush everything you can use whatever coolant you want. are problems after a coolant change or water pump replacement, follow these steps and see if that solves the Jul 22, 2005 · C4 Tech/Performance - LT1 Cooling System Bleed Procedure - How do you do it? Where is the bleed screw? Do you do it cold, hot, running? In an effort to increase my heat transfer during track events (oil temp over 300) I drained the radiator and refilled with distilled water and a bottle of water wetter. Jun 28, 2014 · Hello Everyone, Should bleeding the cooling system take only a couple of hours. Air seems to be trapped in the How to bleed your Lt1 coolant system! MemphisGrindTv 1. Just wondering if there is anything to look for? The guys have given it a couple of diagnostics. 1. ux4vh kv9b4 zopf yu hd3c clxpcvfv zal7 ycqe vl rfiz5bu