How to pass emissions tests
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Senior User
Joined: Mar 2004
Posts: 115
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From: Georgetown Tx
How to pass emissions tests
I have a 86 460 F250, the egr stuff has been removed (egr plate, exhaust air pipes, air pumps) now my part of the lone star state has emissions testing at inspection. Has anyone with an older vehicle, pre-catalytic, added cats to their truck in order to pass the smog test? I would much rather put two cats on my truck rather than to try to replcace all the old egr crap... barca
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Joined: May 2003
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Does your state have a visual inspection along with the sniffer? I have an '83 F250 with a 460 that passes a sniffer test no problem. On my printout, the emission system info states "tampered", but since I pass the actual sniffer test, I am ok.
If you do have visual inspection, and all original parts are required, adding cats isn't going to help you.
If you do have visual inspection, and all original parts are required, adding cats isn't going to help you.
Old School Hot Rodder
Joined: Feb 2006
Posts: 6,472
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From: Exmore, VA
If you get to the point you have to have it, I am converting my 86 F350 460 to an EFI system. Once I do, all of the original emission equipmnt will be up for grabs. The 85 to early 87 is a plumber's nightmare of air pipes, two pumps etc. Since all I have to deal with is a look at it, and Virginia allows me to update to a newer system. I am making sure the "Non-Catalyst" label is still visible.
Posting Guru
Joined: Aug 2005
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In Missouri where I live any truck over 8600gvw is exempt from the pollution test part of the inspection. There are many changes coming down the pike around here regarding emissions testing. Newer cars(less than 5 yrs old) will be exempt and others with obd will just be plugged in and tested. There are other things as well coming such as older vehicles that drive less than 5,000 miles(guessing from article in paper) will be exempt.
Moderator
Joined: Aug 2002
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From: Southern California
Basically bad news......fed regs require all orginal smog equipment be in place, and each component must be physically inspected. With that year of EGR, they will run a vacume test to see if the diaphram is ok.
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