blu_ej

I need help on why I am not passing my emissions. My car is a 95 civic with a obd2 gsr swap. It has headers on factory 1.6l cat factory exhaust and muffler. Also has short rem intake and the large runners are open at all times.

The first test is me just testing without doing anything to my car.

Second test is after sea foam and plugs.

Third test is changed oil with one bottle of iso-heat (red bottle) added to about 3 gallons of gas and timing retarded 4 degrees.

Forth test is the same as the third except I grove the car hell and put the timing back where is was originally.

blu_ej

bump

blu_ej

come on guys you have to know something

VTECROAR96typeR

did you do the swap your self??

blu_ej

yes. dont have any cel. car runs good but i only get about 20mpg.

Former User

The engine runs rich at idle.

Is the idle speed out of spec?

ekb16

iTrader: (1)

have u tried new spark plugs

blu_ej

its idles at 700 to 800.

green99civic

seems about right maybe a little high idle maybe needed to be re timed

blu_ej

just checked out my timing and it turns out everyting is dead on from factory specs.

Former User

As stated by ekb16, start by doing a basic tune up -- replace the spark plugs, plug wires, distributor cap, and rotor. If the problem persists, then you may have a lazy O2 sensor that isn't throwing a CEL code or an exhaust leak near the O2 sensor in the exhaust manifold.