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Man I wish I’d never sold my 7.3. I bought a 2005 6.0L about 6 months ago and just noticed recently I’m losing coolant. Looking from underneath it looks like it’s coming from around the back of the block between the heads. At first I thought it was the head gasket leaking since water was standing on a part of the head gasket that sticks out on the back corner, but I believe it’s actually coming from somewhere higher than that and just running down the edge of the gasket. It’s running down more on the passenger side, but it is running a little down the driver’s side. I’ve lost a gallon over the pass 3 months. I’ve not pulled anything with it since I bought it. I do drive it to work everyday, which is around 100 miles round trip each day. I'm not sure if this has anything to do with it, but my fuel mileage went from 16 - 16.5 down to 14.5 - 15 within 1 or 2 fillups. I buy my fuel at one station and my drive habits didn't change. I did try to baby it to make it better, but doesn't seem to make any difference.
I’ve read several posts about the egr valve and cooler issues. If I’m understanding this correctly, the cooler gets clogged and restricts coolant flow that potentially can causes the head gaskets issues (I assume from overheating). The egr delete is supposed to eliminate this problem. Does that sound correct? If so, is there any DIY instructions on the delete?
Thanks for the help,
Last edited by jvest; 10-21-2009 at 04:39 AM.