Armorgreen

yo im look for tips on how to make my 1987 rx7 pass smog....right now it is failing because it is burning to much gas.
any tips will be helpfull, thanks

mozuhs

iTrader: (3)

lean it out thru adjusting your air flow meter. worked for me. just make sure to mark where its set at beforehand if you wanna put it back to where it was

RobbyWally

iTrader: (2)

The emission control systems on our cars are too complex to make specific suggestions without more info about your car: N/A or Turbo? Original to CA or from another state? Stock factory engine and emission controls or modified? If modded, what? Did it pass for you in the past? If so, any changes, performance problems or major repairs since then?

Some general suggestions of things to do or check:

• All vacuum hoses for leaks
• Throttle position sensor setup
• Idle speed / idle mixture setup
• Run a tank of gas w/ fuel injector cleaner
• Just before the test, give the car a good run & have it tested right away

Good luck,
Rob

VITOMAN1977

Is it a test only smog or regular smog? I know a guy, who knows a guy, that can help.

mozuhs

iTrader: (3)

yeah if u post numbers itd help

MotorCade

iTrader: (1)

Gotta do this very soon on my FD, as well. I know there's smog info on here... will try searching again -

vn42

copy from 2nd gen faq





Emissions & Exhaust
My car is having trouble passing emissions, but I have new spark plugs, filters, cats, etc. What do I do?

and:
J-rats Recipe for cheating emissions if its ABSOLUTELY necessary:

1. Turn variable resistor to full lean, or as lean as you can get and still run.
2. Trick ACV into pumping air to the cat all the time by removing the FORWARD UPPER vac hose, and capping it.
3. Run 87 octane
4. Run your tank down till your almost empty.
5. 2-3 bottles of alcohol in the tank. Drive VERY GINGERLY to the emissions station.
6. Once you pass go, DIRECTLY to a gas station and fill up with regular unleaded.

RobbyWally

iTrader: (2)

If you have not seen this on the forum yet, it is possible to let Google search the forum for you. For example, enter Google search as "CA smog site:rx7club.com" and Google will return hits only from the forum that reference 'CA smog'.

For what it's worth, I've managed to get my 88 vert (178k) to pass five times since I brought it to CA. But over that period, I've replaced all the vacuum hoses, the air control valve and the fuel tank vent hose. My last 'fail' was mostly because the guy screwed up the vapor recovery test & had to start over. By the time he got to the actual sniff test, the cat was cold. I took it to another place where it was tested right away. It is passed easily (with fresh oil, plugs and air filter after running a tank with injector cleaner).

juicyjosh

iTrader: (29)

You may want to consider a fresh O2 sensor and replacing the EGR valve.

juicyjosh

iTrader: (29)

I don't think the EGR valve has much to do with actual emissions (on an FD at least), but replacing it got rid of my check engine light.

BoneT2&Harmony

Run some e85

RobbyWally

iTrader: (2)

Just noticed the OP has not posted any responses. You still out there Armorgreen? Did you read this? Try anything? Get it to pass?

MotorCade

iTrader: (1)

Good info here - will give it a go asap. Thanks guys!

Aaron Cake

iTrader: (1)

Instead of suggesting all kinds of cheats and possibly damaging fixes (adjusting the AFM?! Don't touch it!), just start simple.

Full tuneup.

Then one can go on to check more esoteric things like the condition of the injectors, cats, and emissions equipment.

Armorgreen

yea dude, to be honest i didn't know how to bring up this post again i figured on my page it would notifie me that i had responces form this post.
thanks for everyones help im getting it started and hopfully it passes.

Armorgreen

yo so other question that has been brought to my attention is the MAP sensor, does this help my chances of pasing?

RobbyWally

iTrader: (2)

Glad you are still there and figured out how to find your way back to the thread. Like I said in my original reply a week ago, give us some specifics about your car and we might be able to provide some more specific suggestions.

esjoson1126

adjust your variable resistor to full lean, go to home depot paint section look for denatured alcohol by "KleanStrip". Make sure it's ethanol based not methanol. Add it to your tank 1 gallon denatured alcohol and 2-4 gallons of 87 octane gas and you're good to go. Make sure before you get it check to drive your RX in a spirited way, give it a good heavy pounding making sure that your cats are fully warmed up. I just passed mine last week. I thank all my fellow rotary enthusiasts for sharing their helpful-wonderful ideas in our forum.

Armorgreen

Thanks every one, i finaly passed smog after a month of work and around 1000 in repairs.
To be honest this has been an eye opener, i might just sell my 7 i dont have the time and the money for this car

riwanika

iTrader: (1)

Oxnard!? Which car around town is yours? btw could you let us all know what you had fixed in order to pass? It might give some others direction on fixing theirs! Glad to hear you got it to pass, I have till april to fix mine.

Armorgreen

its blue, it has a line *** sublime tramp stamp ahaha
got a new cat, new map sensor, new damper and EGR valve.