Thread: P0174 code
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      01-26-2019, 10:18 PM   #15
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Drives: CB X5M
Join Date: Jun 2018
Location: Des Moines

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Just a heads up, this turned out to be an exhaust leak at the bottom of the downpipes. On both sides, I had openings at the connection flanges. Somehow when I installed the downpipes, I tightened them, but the bolts I had welded into the downpipes had too long of a space without threads if that makes sense. The issue then arose when they settled into place and space was left open between the threads and the downpipe flange. Anyway, the space was so large on one side that my brand new gasket actually flew out. The other side was lodged in the exhaust pipe. I am looking to replace the downpipes as these didn't fit well, and basically had to be forced in place.
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