Kenji001
08-10-2009, 10:37 AM
I have a 1993 S13 Hatchback with 257K miles.
My result:
Test 15MPH
HC: MAX 88 AVE 21 MEAS 113
CO(%): MAX 0.52 AVE 0.06 MEAS 0.35
NO(PPM): MAX 704 AVE 150 MEAS 929
Test 25MPH
HC: MAX 53 AVE 13 MEAS 63
CO(%): MAX 0.50 AVE 0.05 MEAS 0.18
NO(PPM): MAX 738 AVE 136 MEAS 322
I failed NO in 15mph test and HC in both 15mph & 25mph tests.
Here is my result from last year:
S13 Smog check help: KA24ET / KA24DET Forum: Nissan Forums / Infiniti Forums - NICOclub (http://nico.zeroforum.com/zerothread?id=328637)
What I did before the smog test:
1) oil change
2) Retard ignition timing to 15 BTDC.
3) With under a 1/4 of gas, I poured in 2 gallons of denatured alcohol.
When retarding timing, I tried to adjust the idle screw to 650 rpm with TPS sensor disconnected. However, I turned the idle screw to clockwise max. My digital timing light still says it is about 760rpm. The idle was rough and sometime stalled my car. So I turned counter-clockwise a little. The idle rpm is about 800 rpm. Then, I rotated my distributor counter-clockwise to retard my timing to about 15 BTDC. My idle was still fluctuate sometimes (500rpm then to about 700-800rpm for about 2 seconds).
Did I do this correctly? Please advise.
The EGR valve is working, but I didn't take it out and clean it. The cat looks like of old. I didn't do anything with the cat.
Reference:
1991-1994 240sx: Setting adjusting idle tutorial: Nissan Online Mechanic: Nissan Forums / Infiniti Forums - NICOclub (http://forums.nicoclub.com/zerothread/254123)
1991-1998 240sx: Timing Light Tutorial: 240SX Forum / 180SX Forum / Silvia Forum: Nissan Forums / Infiniti Forums - NICOclub (http://forums.nicoclub.com/zerothread/358264)
My result:
Test 15MPH
HC: MAX 88 AVE 21 MEAS 113
CO(%): MAX 0.52 AVE 0.06 MEAS 0.35
NO(PPM): MAX 704 AVE 150 MEAS 929
Test 25MPH
HC: MAX 53 AVE 13 MEAS 63
CO(%): MAX 0.50 AVE 0.05 MEAS 0.18
NO(PPM): MAX 738 AVE 136 MEAS 322
I failed NO in 15mph test and HC in both 15mph & 25mph tests.
Here is my result from last year:
S13 Smog check help: KA24ET / KA24DET Forum: Nissan Forums / Infiniti Forums - NICOclub (http://nico.zeroforum.com/zerothread?id=328637)
What I did before the smog test:
1) oil change
2) Retard ignition timing to 15 BTDC.
3) With under a 1/4 of gas, I poured in 2 gallons of denatured alcohol.
When retarding timing, I tried to adjust the idle screw to 650 rpm with TPS sensor disconnected. However, I turned the idle screw to clockwise max. My digital timing light still says it is about 760rpm. The idle was rough and sometime stalled my car. So I turned counter-clockwise a little. The idle rpm is about 800 rpm. Then, I rotated my distributor counter-clockwise to retard my timing to about 15 BTDC. My idle was still fluctuate sometimes (500rpm then to about 700-800rpm for about 2 seconds).
Did I do this correctly? Please advise.
The EGR valve is working, but I didn't take it out and clean it. The cat looks like of old. I didn't do anything with the cat.
Reference:
1991-1994 240sx: Setting adjusting idle tutorial: Nissan Online Mechanic: Nissan Forums / Infiniti Forums - NICOclub (http://forums.nicoclub.com/zerothread/254123)
1991-1998 240sx: Timing Light Tutorial: 240SX Forum / 180SX Forum / Silvia Forum: Nissan Forums / Infiniti Forums - NICOclub (http://forums.nicoclub.com/zerothread/358264)