Hi guys, I had a problem recently with my ride. The pickup has been stuttering at around 3000rpm. At times, it has been smooth and willing to go beyond 3000rpm. But mostly, the car jerks abnormally when crossing the 3000rpm mark. Side note, my radiator was leaking but was fixed with a custom cover. But I doubt the problem is due to the radiator. Went to a couple of workshops today. The diagnostic test came out okay for all the electronic items. Mechanic says no leakage around any of the pipes. Anyone encountered such symptons before? Thanks!