1991 N/A Emissions
I have a 1991 N/A with a stage 1 street port from hayes rotary and a R&D Thermal Catback dual exhaust. I tried to get it inspected, but they told me the numbers were way off. Does anyone know how to fix something like this and is it really that far off that I should just forget it and sell the car?
Here are the readings they gave me: HC 3.7 gpm Limits = .8 gpm CO 20.29 gpm Limits = 15 gpm NOx .81 Limits = 2.0 gpm Any help would be greatly appreciated because I have no idea... |
are the spark plugs, plug wires brand new?
did you run the car for awhile befor bringing it in? might be time for a new cat did it pass last year? hell a loose belt on the air pump might do it |
check stickies for more information
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Unfortunately, I just bought the car, so i have no idea what was done. He told me he got new belts, radiator hoses, and a new radiator. A mechanic of mine said that bad spark plugs/wires can cause the HydroCarbons to be high. He also mentioned that the O2 sensor could be the culprit. Anyone know from experience if either or both of these can cause these problems? Can this really be as simple as replacing the spark plugs? Anyone know a good rotary mechanic on Long Island by chance? Im just outside of queens :/
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There's a guy in Queens Village, Powerhouse Tuning. Look him up in the mechanics thread in the NE section. Tell him Roen sent you.
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Originally Posted by JDM_FD3S
(Post 7512807)
I have a 1991 N/A with a stage 1 street port from hayes rotary and a R&D Thermal Catback dual exhaust. I tried to get it inspected, but they told me the numbers were way off. Does anyone know how to fix something like this and is it really that far off that I should just forget it and sell the car?
Here are the readings they gave me: HC 3.7 gpm Limits = .8 gpm CO 20.29 gpm Limits = 15 gpm NOx .81 Limits = 2.0 gpm Any help would be greatly appreciated because I have no idea... You need a tune up, a good catalytic converter and an operating air-pump. Cats last only a year or two on rotaries. Many people have tried all the tricks and then in desparation replaced the cat. THEN they pass the sniffer test. Me included. Good Luck! |
If you just bought the car a tune should be the first thing you do. The spark plugs could be the factory ones for all you know. I would start with a complete tune up and go from there.
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I actually found out that there just shells of cats in the exhaust :( So im going to replace the spark plugs, wires and the cat and hopefully that will put me over the hump.
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there is a table around here that shows what each failed test is caused by and what to check. i looked for a couple minutes and cant find it though.
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Originally Posted by JDM_FD3S
(Post 7515441)
I actually found out that there just shells of cats in the exhaust :( So im going to replace the spark plugs, wires and the cat and hopefully that will put me over the hump.
If you can manage it get a new cat that you can put on and take off just for testing day. |
Originally Posted by 87 t-66
(Post 7515520)
there is a table around here that shows what each failed test is caused by and what to check. i looked for a couple minutes and cant find it though.
I didn't mention it before for no reason. (not directed at anyone) |
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