1986 NISSAN TRUCK 1986 NISSAN 720 PICK UP

  • Tiny
  • texaz69
  • 1986 Nissan Truck

1986 Nissan Truck 4 cyl Four Wheel Drive Manual

My truck failed emissions. CO's were 39.49 and applicable standards are 25.00. What can I check for, new vac. Lines, plugs & wires fuel filter

Thursday, June 24th, 2010 AT 3:58 PM

1 Answer

  • Tiny
  • rasmataz
  • Member

Could be the coolant temperature sensor or the oxygen sensor not going into closed loop mode giving fuel when not needed. To include a leaky injector or pressure regulator that will make run rich at all times.

Was this
answer
helpful?
Yes
No
Thursday, June 24th, 2010 AT 4:04 PM

Please login or register to post a reply.

Similar Questions