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Automotive Emissions Forum

Professional automotive forum for discussion of automotive emissions, on-board diagnostics (OBD2), and emissions testing programs around the world. The discussions often cover both the non-technical aspects (such as enforcement, automotive politics, and legal), as well as the technical aspects of emissions and emissions-related repairs, including the differences between vehicle certification and the various inspection and maintenance programs around the world. This forum is for experienced automotive repair professionals only, membership required.

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Recent Automotive Discussions in the Automotive Emissions Forum

Snap on SUN smog unit with maha dyno info
06/11/2019 in the Emissions Forum
I have an older Snap on SUN smog unit with MAHA DYNO combo in working order. I also have a buyer for it. He is asking for manuals on how to use the DYNO option [Sun sis] [sun 2] [sun 3] --- Any sources ?? Thanks ...
Star Statistics
06/08/2019 in the Emissions Forum
I ran some statistics on the Star directed vehicles in my shop any thoughts? We were always told that Star was for HEP vehicles and "some" random we did see only 4 vehicles that were designated "random" on their DMV paper 65% that have never failed in his...
Gas fouling on one side only
06/01/2019 in the Emissions Forum
[Driveability: 12 GMC Sierra 1500 SLE 5.3L] I need advice on this truck . Came in for " missing out " . Cylinders 3 , 5 & 7 show up on misfire counters. Pulled all spark plugs to tune-up . All the odd cylinders are GAS fouled , black as any I've seen . O...
2012 BMW XDRIVE35D
05/30/2019 in the Emissions Forum
This X5 diesel failed for all monitors incomplete including (NMHC Catalyst) battery had been replaced. After 20 days of driving and checking the monitors before a couple of times and confirming the catalyst monitor was not ready and telling the customer i...
Stolen cat, no longer available.what to do?
05/29/2019 in the Emissions Forum
[Driveability: 98 Ford Econoline Super Duty Custom 6.8L] Someone helped themselves to the CAT off of our shop truck over the weekend. OE is NLA and there doesn't seem to be any aftermarket available either for the V10. Are there any options at this point...

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