720 PICK UP

1986 Nissan Truck

Tiny

texaz69

June, 24, 2010 AT 3:58 PM

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

FOUND 34 RELATED QUESTIONS

1 Answer

Tiny

rasmataz

June, 24, 2010 AT 4:04 PM

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.

Please login or register to post a reply.

Code Read Retrieval/Clear Honda Civic
Code Read Retrieval/Clear Mercedes Benz