er82
Proven Member
- 243
- 28
- Apr 18, 2014
-
Sacramento,
California
I tried to pass CA smog test for my 90 DSM AWD but it failed at idle due to high HC.
I changed spark plugs and gapped to 0.032", ignition coil, changed oil to 20w50, filled up tank with fresh gas. It's got spark plug 10mm spark plug wires. Cat is from another DSM that's been sitting for a while. Although, I don't think the cat is the issue as it passed 2500 rpm test (pic attached).
Here is link to idle video (smoke is vapor because it's cold):
http://s236.photobucket.com/user/edya19/media/IMG_1765_1_mpeg4.mp4.html
Compression:
#1 180
#2 150
#3 160
#4 175
Would that compression cause rough idle and fail the test?
All the vacuum lines appear to be connected, soft and flexible. Car is stock except for intake filter. I tried to pass test twice, second technician said it idles like it has a cam. As far as i know it's all stock.
Anyone have any ideas?
I changed spark plugs and gapped to 0.032", ignition coil, changed oil to 20w50, filled up tank with fresh gas. It's got spark plug 10mm spark plug wires. Cat is from another DSM that's been sitting for a while. Although, I don't think the cat is the issue as it passed 2500 rpm test (pic attached).
Here is link to idle video (smoke is vapor because it's cold):
http://s236.photobucket.com/user/edya19/media/IMG_1765_1_mpeg4.mp4.html
Compression:
#1 180
#2 150
#3 160
#4 175
Would that compression cause rough idle and fail the test?
All the vacuum lines appear to be connected, soft and flexible. Car is stock except for intake filter. I tried to pass test twice, second technician said it idles like it has a cam. As far as i know it's all stock.
Anyone have any ideas?