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.