1998 Honda Civic

Engine Performance problem
1998 Honda Civic 4 cyl Two Wheel Drive Manual 128452 miles

1.6 ls non vtec engine honda coupe. Failed on emmisions test. Results low idle; CO 3.30vol% HC0ppm lamba 0.889, high idle CO 3.89vol% hc 232ppm. Took it to a garage and the mechanic said it is putting alot of fuel out the exaust, car is not fitted with a diagionest plug, some werent in that year. The car does not seem to be running that bad but sometimes lacks power, and then surges. Please help with any ideas
September 29, 2008.

When was the last major tune-up and last oil change?

Have the catalytic converter/O2 sensor and coolant temperature sensor

Sep 29, 2008.