Duramax Lly Engine Diagram Hook'em horns! 30104 posts · joined 2008. #2 · apr 4, 2019. there are several coolant lines up top that will run down to where you see. best to pressure test the system for a look see. 🇨🇱 🚆2007 lbz 3500 lt3 drw crew cab, sulastics, putnam xdr 15k, b&w 30k turnover gn companion, ride rite air efi'd by rob. Whitetrash21. 829 posts · joined 2009. #15 · oct 18, 2009. pressurize your cooling system. should show any leaks you may have. check the front of the motor as well. driving speeds or the fan can push fluids back along the block and heads so your leak my look as if its coming from the rear of the motor. wes.
Lly Duramax Engine Diagram Coolant Leak From Bottom Of Bell Housing My guess is your coolant is coming from the block off plate up farther kinda underneath the down pipe close to the manifold area of the flywheel housing. my personal truck is a 2007 gmc sierra lbz ccsb 4x4 with hsp piping, danville 68stage2r turbo, ppe manifolds and up pipes, limitless 1078 tc, stock trans with trans go jr. and ratio tech kit. I now have a coolant leak on the rear engine, seemingly engine to bell housing. i’ve checked the turbo coolant line and u shaped hose, all dry. around the mount of the cooling plate seemed dry but the bellhousing above and below is soaked. it’s a steady leak even when the engine is off. my initial thought is the rear o rings on the rear. Replacement hose (you will need to cut to length): amzn.to 3f1qsuureplacement hose clamps: amzn.to 3ssngew#duramax #coolantleak #fixed #easy. It's easier to just swap the whole pump separator plate assembly. remove all the bolts inside the bell housing, and the pump will drop out of the bell housing. i'll tell you right now, it's going to be a pita to change that rear adapter plate with the engine in the truck.
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