Quote:
Originally Posted by Stringer
Also, I'm thinking the EGR solenoid must be okay since the new EGR valve got me through a state emissions test. It had failed NOx before the EGR.
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How much of the NOx delta did you get before and after EGR swap - you should see it in your test results print out. Usually a partially clogged EGR passage will drop NOx, but not dramatically. If the NOx readings dropped a little bit, just below test threshold you still may have obstructed EGR passages or leaky EGR diaphragm (not applicable since you have new EGR).
A clogged CAT may cause increased exhaust back pressure which will effect EGR test.
//RF
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"The Beast"
1975 Chevrolet C20 longbed
350/
700R4! with 3inch body lift
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40's!
TBI retrofit completed (2007-07-29)
New 383CID (+030) 08-304-8 9.5:1CR x36,005 (2012-12-17)