failed smog because of timing

1991 NISSAN NX
150 MILES • 2.0L • 4 CYL • 2WD • AUTOMATIC
Avatar
KIP#1
  • MEMBER
  • 3 POSTS
The timing came up as defective at 10 BTDC it should be 15 BTDC-is the timing set by the computer? Why is 10 defective? I would think closer to zero all the better.
Jul 20, 2016 at 6:33 PM
Advertisement
Avatar
HMAC300
  • CERTIFIED EXPERT
  • 48,601 POSTS
different manufacturers have different settings for timing for each engine. yours is adjustable see picture for instructions and set to 15 degrees.
Image (Click to enlarge)
Attached Media
Jul 21, 2016 at 6:04 AM
Avatar
KIP#1
  • MEMBER
  • 3 POSTS
Thank you, the shop I went to actually charged $10 dollars to do it. Though by having the timing at ten it really helped on the emission numbers. The HC still came out too high and all the other numbers went up but passed. So they are installing a catalytic converter-
Jul 21, 2016 at 2:33 PM
Advertisement
Avatar
HMAC300
  • CERTIFIED EXPERT
  • 48,601 POSTS
next time you get it done, change oil and filter and air filter and drive about 20 miles on eway then get it tested it will probably pass
Jul 21, 2016 at 4:06 PM