Why does The engine idylls rough after a full tuneup? I was thinking maybe the injectors needed replaced. 240.000 miles. Runs great except at idyl.

365

Asked by Oct 19, 2013 at 10:58 PM about the 1992 Buick LeSabre Custom

Question type: Maintenance & Repair

2 Answers

6,725

Did the car run good before the tune up ? If so then something you did is not correct, whether it be a loose plug wire, bad plug gap or incorrect cap or rotor positioning. Recheck all your work BEFORE you take anything else apart.

365

Oh no it was much worse the car just shook and wouldn't go over 30 . Now the car is fast but idylls rough. Takeoff is smooth

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