State Inspection Sticker
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Joined: Aug 2007
Posts: 1,858
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From: laporte in
happened to my buddy. my county doesnt do testing..but the county next to mine does and i lived there for a couple years..couldnt drive my bronco without gettin rid of the straight pipes...and my buddy kept failin the sniffer test...i hate those emissions tests
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Junior User
Joined: Dec 2010
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Doing a web search and reading testimonials, I hear there's a product called "Guaranteed to Pass" under the CRC name. It's to be a "complete fuel system cleaner. Have any one of you ever used this product? You add it to a full tank of gas.
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Junior User
Joined: Dec 2010
Posts: 54
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Yeah run some Seafoam or CRC G2P in it on the tank full before its time to do the sniffer. It will clean stuff up some and help. I don't think you want to run it in the tank during sniffer though. Definitely make sure its warmed up really good. Drive it around for a while and drive it a little hard that should help. I always change my oil before going in too.
1. My front gas tank was not registering on my fuel gage but now, IT IS FUNCTIONING!
2. My front gas tank is not even half empty and I have driven my truck over 110 miles so I am getting more MPG and this is around town.
I can't believe the above happened because of this additive. Oh, I also had a thermostat installed. (it was missing one) I don't quite believe this is happening just because I added Seafoam as you guys suggested. Has this happen to any of you?
Hotshot
Joined: Sep 2001
Posts: 11,958
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The thermostat not being installed could definitely part of the issue with passing sniffer. Without it the truck wont warm up all the way so the computer will think it is still in open loop.
I have used the CRC stuff too as well as Seafoam and Berrymans. I generally run Seafoam in my truck about every 6 months and for every 3 months in between, I run Techron in it.
I have used the CRC stuff too as well as Seafoam and Berrymans. I generally run Seafoam in my truck about every 6 months and for every 3 months in between, I run Techron in it.
More Turbo
Joined: Jun 1999
Posts: 532
Likes: 1
From: Las Vegas
When mine couldn't pass the sniffer test, I performed the KOER test and it showed a TAB/TAD system malfunction. The sniffer test showed high CO and HO. Replaced both TAB and TAD solenoids, along with the O2 sensor (for good measure); trouble code cleared and passed the sniffer test.
If you haven't done so already, perform the KOEO and KOER test and see if you get any codes. I didn't have a CEL while operating the truck, but it did show up during the KOER test.
Ed
If you haven't done so already, perform the KOEO and KOER test and see if you get any codes. I didn't have a CEL while operating the truck, but it did show up during the KOER test.
Ed
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