6 of my cylinders are between 10k and 13k. #6 is 6k and #1 is 22k. All plugs are gapped the same, I may have an exhaust leak on 6 could that cause a low spark line? also the on both 1 and 6 the spark line osscilates a ton just before the spark, coil osscilations look normal. what could that be?

 

Re-check all the connections on everything. An exhaust leak shouldn't effect the spark, I wouldn't think. Make sure all your plug wires have a good connection, and are snapped on to the plugs securely.

Check the simple things first. And if you still can't figure it out, try another set of plugs. I have had the best luck w/ Autolite 106's.

Good luck!

 

I alredy replaced those 2 plugs with 2 more delco 906 plats, there is no reason they should work for 6 cylinders and not for the other 2. I even tried switching the plug wires and switching injectors, still no change. did a compression test, looks good.could this be either a coil or opti???