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Old 10-01-2012, 05:01 PM   #1 (permalink)
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Angry 1987 samurai won't pass in TN

having trouble getting our CA sammie to pass in TN
air mixtures to high.

our reading Limit
HC 540 220
CO 2.92 1.20

we did clean the air filter and they came down some
is there an easy way to figure out if a sensor is bad
without it costing alot?

or just replace them and hope for the best


We never had any problems in CA with passing
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Old 10-01-2012, 10:46 PM   #2 (permalink)
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Do you have a copy of the FSM (Factory Service Manual)? You can find it at Ack's FAQ 1986 to 1987 SJ410 Factory Service Manual. Section 5 covers the emissions.

Couple of questions that people usually ask:

Does you Check Engine light work, or in other words, does it come on when you turn the key to run and go off after it starts?

Have you replaced the PCV lately?


I have a '91 FI, so not familiar with the carb models but I amlocated in Mount Juliet if you are in the Nashville area.
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Old 10-02-2012, 12:21 PM   #3 (permalink)
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mine is an 88,im in nashville too. as long as i run mine real hard on the hwy then go straight to the testing im good...but if i start it up and drive straight there if fails everytime?? Try running it on the interstate for a ways then go straight to test it...odd,but it works...
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Old 10-02-2012, 12:24 PM   #4 (permalink)
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The factory service manual, which can be downloaded from Acksfaq, has detailed instruction on testing different components.

Was your Samurai fully warmed up when they tested it? High CO AND HC is an indication the cat has not lit off or is bad.
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Old 10-05-2012, 11:25 AM   #5 (permalink)
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I was reading your post. I also live in the Nashville area but don't have emissions in my county. I also happen to be a professional mechanic. How old is the Catalytic converter? That may play a role in not passing MARTA.
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Old 12-02-2012, 10:11 PM   #6 (permalink)
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My Zuk wouldn't pass emissions here in Arizona and they do a pretty thorough test on a Dyno. At the recommendation of a few i went extra strong and on a full tank of gas i put in two containers of "Heet" and one container of "Guaranteed to Pass" drove it around on the highway the day before until it got down to a half a tank an then got up the next morning and drove about 15 hwy miles and went straight to the testing center and keep it running while waiting in line (do not shut it off) It passed with flying colors with plenty of room to spare. I was very thankful to those that told me to do this. I then went after that and filled up with gas again to dilute that strong mixture as i know it was "Hot".
Others may have different opinions but it worked for me.
Joe
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