Failed MA emission test: High NOx

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Failed MA emission test: High NOx

01-11-2006, 03:17 PM

manny

Registered User

Join Date: Feb 2003

Location: Ontario, Canada

Posts: 3,160

Quote:

Originally Posted by boneheaddoctor

High NoX is typically a lean mixture.(and a result of high combustion temps).....High Hydocarbons are typically the cat.

Half correct.
High HC's are normally caused by ignition misfires, vacuumleaks, & oilconsumption.
Trust me, I do emissions testing for a living.

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