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High NOx emissions failure - 740 Turbo 700

posted by  Larue on  Fri Sep 3 12:09 CST 2010
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last visit: Sun Mar 30 17:46 CST 2014
[RELATED]

Dont disregard exhaust manifold, even if you changed 4 years ago. Gaskets can fail. Or not done properly at first.
I found a really tiny leak, underneath the manifold, Crawling on ground was necessary. Sealing it dropped my nox from almost 800 to around 50.
I wonder if leaking head gasket could play a role?

Good luck.






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