Originally Posted by
Flieger
I gave it a good run solo today in the canyons. Ran strong the whole way but on the way back sounded "funny" like it was running on 5 cylinders. There were no unusual sounds before this, no cloud of smoke/fluid afterwards, and it seems smooth at idle but I can feel a bit more vibration in the midrange and it seems off song. Thinking it is ignition related as it doesn't appear/sound to be a leak between the header and head or broken headstud. Hoping it isn't one of those things or a broken valve spring. Going to try to pull plugs one at a time if it is still acting up next time. Hoping some new plugs or wires will solve it. Distributor cap and rotor look pretty good.