I wanted to rule out that my plugs were not the cause of a rough idle, but there may be a problem. I pulled the wire off of a plug, no change in engine performance. I tried it on other cylinders, same thing. So, every one I pulled seemed to have no affect on the engine. I even pulled multiple at the same time, No change.

Every one wire seemed to be working properly. I guess I like to shock myself. Anyway, I feel like this may be a big problem. Any thoughts? compression problems?

I know at one time I did have a cracked plug and that thing misfired like crazy.

Any advice would be much appreciated. Thank You.

 

Knowing what engine you have would help , if it a four cyl , with dual plugs ,pulling off one wire wont show anything , you need to pull both wires of the cyl.

 

It is a Mazda B3000 V6 3.0L

 

When you pull the plug wires off are you hearing the wire arching ? If not than you have a bad cool pack

 

My apologies I meant coil packs

 

I love cool packs...haha. But, I think I have a weak coil pack. I need to do the multimeter test. Does any one know what my resistance is suppose to be.

I have arc,but when I unplug it from the coil pack one of them was not "arcing out" of the ports of the coil pack.

 

I bet that one that is not arcing is what's causing your rough idle

 

Well of them, but 2??? were arcing like crazy. But those other ones, you could slightly hear it arcing (no visual)

 

How many miles do you have on your truck sense they were replaced last ?

 

7-10 thousand, I think my plugs are good. I haven't pulled those yet to check. But this rough idle has been around even when I did change them. It's just poking at me until I find it.

 

I would say it's your coil packs than with my fords that had coil packs I would have a rough idle until I changed the coil packs than it went away