Other than a possible miss, what are the symptoms of a bad coil pack and how can you test them?

 

I was reading on that in another thread use the search...i will help look if i find it ill hit you up...also have a set of coil packs for cheap if that is your culprit

 

Coil packs pretty much work or they don't work. They don't get weaker with age or use. When they get very hot they can go open.

With the engine running, use a timing gun to test each spark plug cable.

 

[QUOTE=Paul Bell;16342561]Coil packs pretty much work or they don't work. They don't get weaker with age or use. When they get very hot they can go open.

With the engine running, use a timing gun to test each spark plug cable.[/QUOTE]

Ahhh; Good idea. Thats actually how I checked my little Miata DD and it worked well

Ive got some breaking up at WOT and the AFR and timing looks good so Im starting to "reach" now
Thanks

 

How old are your valvesprings?

My car started breaking up and it was too late, lifters and cam were toast from bouncing weak springs.