Put a pressure tester on the system and pump it up to a couple of pounds. (Make sure there is plenty of coolant in the system). Loosen a hose clamp on a hose as high up as you can. You may have to stick a screwdriver between the hose and the fitting to let out the air. Let the air out until some coolant leaks out. You may have to also do this on the radiater. The shrouds are needed to properly direct air through the radiater, some owners have noticed that when they had a license plate over the grill it caused the car to run hotter. If the radiater is plugged up with insects or leaves it will cause the car to run hot too. You said you replaced the engine, are you sure the water pump is running in the right direction? Maybe the pipes are hooked up wrong? Another trick is to drill a 1/8 bypass hole in the thermostat to allow air to pass and self-bleed. What you could eventually do is drill and tap the thermostat housing and put a screw in it which you could loosen to let air out or run a small hose out to the header bottle like the self-bleeder system. David Teitelbaum vin 10757 --- In dmcnews@xxxx, "at88mph" <at88mph@xxxx> wrote: > Welp, > > While tryin to get ready for Memphis, today I decided to flush the radiator. > Since I've done the engine swap, I haven't had any probs out of the cooling > system at all. I just thought it would be a good precaution. Well, now, as > luck would have it, I apparently have air trapped in the system. I've tried > everything to get the air out, but b/c its a 4.3, I don't have a bleed > screw. Does anyone have any suggestions for bleeding out the system if the > DeLorean didn't have a bleed screw? Also, I've heard different things > from good sources about the front air shroud (for lack of a better term) > that covers up the radiator. (not the air dam, but the black cover over the > radiator) I was wondering if running the car without this would help > cooling, hurt the cooling, or have no effect. One reliable source says the > DeLorean has to have it to cool properly, another source says there are LOTS > of DeLoreans running around without them and even run cooler without it. > Any advice on either prob would be GREATLY appreciated! I'm tryin to make > it to Memphis with the D, now I'm kickin myself for messin with it! :( > > > Thanks in advance! > > > Duke > '94 Chevy 4.3 Vortec conversion > www.geocities.com/at88mph_1999