So I got warmer weather and swapped out the sprk plugs, number 3 looked the worse for sure and number 1 was a bit better the rest didn't seem as bad. I can rev up to 3k or 4k rpm and don't see any flashing CEL. I tried with a multi meter and can get around 4 or 5 k ohm except for one plug I'm pretty sure it was number 3,
when im reving up to 3 or 4k in park i do see the odd misfire like a cylinder 6 or 8 or 7 etc. Nothing like before where there were hundreds of misfires. Is it normal to see the odd misfire when reving up the engine?
https://cimg1.ibsrv.net/gimg/www.hum...19abe8f9ef.jpg
https://cimg2.ibsrv.net/gimg/www.hum...7ef784bc59.jpg

So I got warmer weather and swapped out the sprk plugs, number 3 looked the worse for sure and number 1 was a bit better the rest didn't seem as bad. I can rev up to 3k or 4k rpm and don't see any flashing CEL. I tried with a multi meter and can get around 4 or 5 k ohm except for one plug I'm pretty sure it was number 3,
when im reving up to 3 or 4k in park i do see the odd misfire like a cylinder 6 or 8 or 7 etc. Nothing like before where there were hundreds of misfires. Is it normal to see the odd misfire when reving up the engine?
https://cimg1.ibsrv.net/gimg/www.hum...19abe8f9ef.jpg
https://cimg2.ibsrv.net/gimg/www.hum...7ef784bc59.jpg

Hopefully that will fix it, time will tell
Sometimes we miss the easy stuff,
I think with your cam you will probably see random misfires, I do on my tuck but usually its around idle speeds

Neal