[dumkopf]

So went to go get my car smogged today. Why is this happening and how do I fix it?

 

[Kuane]

replace the EGR and Cat


Also you're probably running too hot.

 

[batou]

moved to the proper forum

 

[DriftMyMX5]

If you can warm the cat up more you may be able to pass.
Your 25mph passes, though just barely, because the cat warms up from the 15mph test.

 

[cayangco]

heres a tip that works. Run a full tank of 91 octane fuel (BEST IS SHELL GASOLINE - Dont use cheap stuff) and than fill it up to the 1/4 - 1/3 full mark with 91 octane yet again. Next, go to kragen or autozone or something and buy a product called IsoHeet. You want to get 3 of the bottles. Add the 3 bottles of IsoHeet to your gas tank and run the car for like 50 miles and make sure its warmed up when you bring it to the smog shop.

Doing this lowers the NO emissions down significantly and I've lowered NO by like 400 points doing so when I used to have an 87 MR2, and I've gotten an old Dodge durango 4x4 to pass smog from high NO this way as well. basically it makes your engine run much much cooler, your engine is running hot, being why your NO emissions are up.

After you pass, make sure you fill up with a full tank of Shell 91 octane to re-dilute the Isoheet.

best of luck =D

IsoHeet - Fuel line water remover stuff
http://the-auto-alley.amazonwebstore.com/ISO-HEET-GAS-LINE-ANTI-FREES12/M/B000V4HC7Y.htm

 

[batou]

btw. check this thread. i totally forgot about it
http://clubroadster.net/vb_forum/showthread.php?t=37181&page=4

 

[dumkopf]

Thanks, all, for the suggestions. I think I'll try retarding the timing first.

 

[deltaheavy]

When I failed I was a gross polluter, changed the cat and solved everything but Nox... retarding the timing fixed it perfect and passed

 

[dumkopf]

heres a tip that works. Run a full tank of 91 octane fuel (BEST IS SHELL GASOLINE - Dont use cheap stuff) and than fill it up to the 1/4 - 1/3 full mark with 91 octane yet again. Next, go to kragen or autozone or something and buy a product called IsoHeet. You want to get 3 of the bottles. Add the 3 bottles of IsoHeet to your gas tank and run the car for like 50 miles and make sure its warmed up when you bring it to the smog shop.

Doing this lowers the NO emissions down significantly and I've lowered NO by like 400 points doing so when I used to have an 87 MR2, and I've gotten an old Dodge durango 4x4 to pass smog from high NO this way as well. basically it makes your engine run much much cooler, your engine is running hot, being why your NO emissions are up.

After you pass, make sure you fill up with a full tank of Shell 91 octane to re-dilute the Isoheet.

best of luck =D

IsoHeet - Fuel line water remover stuff
http://the-auto-alley.amazonwebstore.com/ISO-HEET-GAS-LINE-ANTI-FREES12/M/B000V4HC7Y.htm

This worked a treat! Thanks!

 

[cayangco]

This worked a treat! Thanks!

your very welcome. glad it worked for you. if anybody else comes across this be sure to pay it forward =)