Misfire

[87Buick]

YouTube - ‪87 Grand National‬‏
Somthing is wrong and cant figure it out..this is what she sounds like. Only gets worse the more she runs. It actually made a metalic sound once after it was out for a test run, on our way back. What does it sound like? hope you can make out the..misfire/stutter sound, w.e. electrical, grounds, plugs, were all swapped and checked. checked gas, tank, lines and presure. at 1:05 in the video it starts and arround 1:20. sorry for the feet. lol
[YOUTUBE]http://www.youtube.com/watch?v=F6GIaSHxVPY[/YOUTUBE]

 

[dank GN]

maybe your coil pack or ICM is going bad? Any scanmaster readings?

 

[87Buick]

Nope, that is one tool I really need to get. If you know of any deals let me know. Without that tool I feel in the dark.

 

[dank GN]

You are in the dark lol need to get one post on wanted parts section

 

[T-top87GN]

Hmm easy stuff first I guess.

Plugs, wires, coil pack, crank sensor.

Inspect the plugs for condition and proper gap. Check the wires for wear and tear. Also look for holes where things could be arcing.

Check the crank sensor by making sure the ring on the balancer doesn't come in contact with it and making sure the sensor is intact.

You can't really test the coil pack without a tester from Casper's.

A scan master may or may not help you, but a scan tool (like DirectScan or PowerLogger) will.