95 blazer 4.3 250k, ca emissions high NOX 15-25 MPH
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95 blazer 4.3 250k, ca emissions high NOX 15-25 MPH
95 blazer high nox at 15-25mph. new cat, new egr, cleaned carbon blockage in upper intake and lower cylinder head egr ports, new spyder injectors. the egr does not stall the engine when manually activated, cause small temporary hesitation. 250 k miles, new fuel pump good pressure. no codes. Any ideas ?
Last edited by 4jdh2; 06-08-2021 at 11:22 PM. Reason: no responses
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