Re: Questions on Emissions

[John Miller <jem@milleredp.com>]

> The failure was for high HOx levels.  1057 was the limit and she was at
> 1345 (from memory)

NOx typically means high combustion temp/lean mixture/exhaust leak 
upstream of the converter, IIRC.

O2 sensor, maybe.  Plugged EGR valve or passage.  Got the manifold crack 
fixed and the fixed manifold seals against the head, right?  Engine 
isn't running too hot?

John.