Well...it was Virginia emissions testing time..again - ZR-1 Net Registry Forums

ZR1Vette · 10-20-2009

Emissions testing is required every two years... the first year results were at minimum pass for HC in the 25 mph run (53 ppm limit and 53 ppm test reading)..fail any one of the test parameters and you fail entire test>>

Due to the HC reading I made the assumption that the injectors (one or a few) were not within spec or failing...thus changed out all 16 injectors. I have to say I was bit on edge for the test that occurred today... BUT take a look at these numbers>>>

They ran the test twice because they could not believe the results...said the LT5 was having better numbers than many new models. The drop in the HC was impressive and to me confirmed the theory of failing injectors.

10-20-2009	#1
ZR1Vette Join Date: Dec 2007 Location: Reston, Virginia Posts: 930	Well...it was Virginia emissions testing time..again Emissions testing is required every two years... the first year results were at minimum pass for HC in the 25 mph run (53 ppm limit and 53 ppm test reading)..fail any one of the test parameters and you fail entire test>> Due to the HC reading I made the assumption that the injectors (one or a few) were not within spec or failing...thus changed out all 16 injectors. I have to say I was bit on edge for the test that occurred today... BUT take a look at these numbers>>> They ran the test twice because they could not believe the results...said the LT5 was having better numbers than many new models. The drop in the HC was impressive and to me confirmed the theory of failing injectors.

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