What Is Hc Gpm Emissions Fail. Web failing emissions testing due to high nox (oxides of nitrogen) i have seen several people posting emissions failures due to high nox (oxides of nitrogen). Web emissions are measured in parts per million, or ppm, and a higher release of hydrocarbons from a vehicle can cause a failed smog test.
emissions fail high hc, co IH8MUD Forum
Web emissions are measured in parts per million, or ppm, and a higher release of hydrocarbons from a vehicle can cause a failed smog test. Misfiring is the most likely culprit, and that can come from an ignition problem, or an internal engine. Car was in a shop for a 1 1/2 years in. I recently failed the colorado emission test due to high hc. Bad canister, a leak in the evap system, bad gas cap could cause it. If you have the exact code, i could give you some more specific. Replaced all vacuum lines, increased fuel pressure, increased iac, reduced tps, regular unleaded fuel and bang. Web below are common faults which are likely to produce high carbon monoxides (co) and rich fuel mixtures. You will need to fix the evap system. Web also, since your 2nd fail was due to high co, that indicates a bad pcv valve.
Web of the list of possible failures the maf is a possible cause of a rich condition. Bad canister, a leak in the evap system, bad gas cap could cause it. Web failed colorado nox emissions test o orrsh discussion starter · #1 · mar 22, 2014 hello, i just purchased a '95 xj cherokee, and failed emissions this morning. Web below are common faults which are likely to produce high carbon monoxides (co) and rich fuel mixtures. Web failing emissions testing due to high nox (oxides of nitrogen) i have seen several people posting emissions failures due to high nox (oxides of nitrogen). 08746 limit 2.5 pass co gpm: The o2 sensor is located in the exhaust manifold just before the bulge. If you have the exact code, i could give you some more specific. Web finally passed emissions. Web i failed emissions test: Web emissions are measured in parts per million, or ppm, and a higher release of hydrocarbons from a vehicle can cause a failed smog test.
