Exhaust and Carbon Monoxide
skituc
Jeeper
Hey all I have been trying to get my carbon monoxide levels down on my 1985 CJ7 (4cyl, stock height, 31x10.5). I recently put a new fully enclosed complete soft top on my jeep for winter and smelled exhaust. I used a RAE four gas monitor to measure the CO levels and found high Parts Per Million levels. 35 PPM sets the meter off and I was averaging 60 - 80. I know OSHA and NIOSH set a 35 PPM for an 8 hour shift and a ceiling exposure of 200. I had a shop replace my Cat, muffler and piping. Now my CO levels seem higher? the Shop ran the tailpipe straight out the back instead of where the old one exited behind the tire, would that make a huge difference? I'm wondering if the right Cat was used?