Timing jumps around at idle

[tsidrift1]

I noticed the other day when I did my ignition timing that the mark was jumping from 5* BTDC to like 8-10* BTDC. The car is driving ok but it doesnt seem to drive as good as it did before i did the ignition timing when it was at 10* BTDC. At idle the car will every once in awile give a sputter or a choke from the exhaust. Does anybody know what is causing the timing not to stay steady, or why the exhaust is choking out every once in awile.

Thanks,
Anthony

 

[talon1987]

did you ground the timing adjustment plug before settin timing ... and also was the car a operating temp

-Pat

 

[tsidrift1]

Yes I did everything like I was supposed to. According to my logger the car idles at like 11-12* BTDC. Could a bad cas be doin this?

 

[talon1987]

you used yur logger to adjust timing instead of a timing light ... the logger is not the most accurate thing ... try using a timing light and see if you still have the problem

-Pat

 

[tsidrift1]

No i used a timing light. I just logged my car yesterday driving to school and thats what the timing was reading at idle. I am wondering if my plugs or wires maybe could be bad, because when I was timing with the light, it would blink or flash regularly and then suddenly blink real fast for a few seconds and then go back to normal. It wouldnt keep the same speed of flash the whole time.