- May 21, 2006
- L82 Pace
this weekend the q-jet was rebuilt. i also installed new plugs ,plug wires cap,rotor and ign. module. i fired up the motor yesterday and for the first couple of minutes it ran fine, but soon after the motor began to surge above idle then drop down below idle(approx. a couple hundred rpm above idle to a couple of hundred below idle). i thought maybe some dirt had gotten into carb so i took it apart and cleaned it again(yes,. i did use a rebuid kit), but had the same result. this surge and drop in idle would happen a couple of times consecutively every 3-5 minutes. if i put the slightest pressure on the gas pedal the motor would smooth out without hesitation at the pedal. i was thinkin' maybe the fuel pump was going bad. the car is a '78 but has only 23,XXX miles on it. any advice would be greatly appreciated.....thanks,,,,mike.