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Found 1 result

  1. DaveT
    My 1993 Loyale w/3AT 4WD. California version Resealed engine installed, by me. Custom stainless exhaust, by me. Running a 180 degree Stant thermostat, the good ones. . It's been running normally. Not burning oil at a crazy rate. Heck, I had an engine that burned a quart per fill up, and it would pass. More than once! Any ideas on what is a typical cause / first things to look at for high hydrocarbons emissions? Has anyone heard of any method of testing for HC? My biggest annoyance of the whole emissions thing is that I have to troubleshoot blind. I'm going to attach my temp probes to check the catalytic converter tomorrow while driving. Test from 2 years ago - PASS: Hydrocarbons = 20ppm Limit 167 ppm CO = .16% Limit .89% HP = 12.1 RPM = 1985 Temp = 167 F Test from today - FAIL: Cruise Hydrocarbons = 102ppm Limit = 220ppm CO = .78% Limit = 1.2% RPM = 2441 Idle Hydrocarbons = 577ppm Limit = 220ppm CO = .54% Limit = 1.2% RPM = 923 Of course, just to "help", they changed the test form. grrr. But the main data seems similar.
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