Any feedback would be appreciated! I bought a new coil and tried swapping each coil with the new one but it still runs the same. I also did a valve job and made sure they were set to .006 in.
How would I determine if this is the cause? There is no hour meter so I'm not positive on that.Is a valve sticking? Sometimes when you have a engine with a lot of hours. The valve springs, loose there spring and are weak. So at higher rpms, they can not function fast enough. Lot of high horse power engines have bigger stronger springs that can push the valves back faster and keep up.
Certainly not in the owners manual. Possibly the tech manual, which I dont have. Anyone else have any suggestions?Is there a spec in the JD book for spring psi @ installed spring height?
That is how it is done on car/truck motors.