stumbling at constant RPM

[TurboGN86]

changed the plugs in my 87 T today and its stumbling when i hold a constant RPM. if i accellerate constatly it runs ok. but im thinking its the ignition and coil pack. what do yall think? the weather did just change but i think its about time for that coil and module to go out. been like a year an ahalf since the last one.

thanks,
Jeremy

 

[TurboGN86]

what should my a/f ratio be? couldnt get a good number tonight due to the stumbling. but need somthing to go by when i get it figured out.

 

[TurboGN86]

Guess i will figure this one out myself

 

[TurboBuRick]

Jeremy,

Sounds like your on the right track with the ignition. Throw it into batch fire and see how it runs.

RL

 

[TurboGN86]

how do i do that?

 

[TurboGN86]

Car was running way lean. When the car tried to go into lean cruise it leaned it out toomuh and started stumbling. Turned fuel pressure up. Problem solved