I think I used NGK plugs in it. I never use champions plugs.
It drives fine offroad it's just on the highway when I am pulling up a hill or something shifting between 3rd and 4th it does this weird crap.
Do you think I should throw a timing light on it and see where it's at? I am starting to think it maybe a bad vaccum advance diaphram on the distributor.
Either that I have a hair line head crack between cylinders.
I might just do a compression check to see where the motor is at as well.
