id been having stuttering problems going from gear to gear while accelerating and, occasionally when driving the light on the dash that indicates which gear im in and my prnds will flicker and sometimes completely shut off. when this happens the car jumps forward sometimes, followed by it correcting itself. i changed all of the spark plugs and found oil inside the cylinders while doing so, i knew my gasket was bad and so i changed that and spark plugs and coils. after doing so the car now starts worse than before, shuddering almost grumbling to life, or it dies and starts on the second time. that being said the car when actually going down the road has next to no hesitation anymore, running smoother in general, but then the flickering on my dash started again. i checked all the wiring and hoses while i was doing the replacements/cleaning all the oil, lol. ill take any help at all at this point lol, taking it to the shop on friday but would love to solve this myself once and for all with a little help. note car is at 122000 miles with regular oil changes and servicing with the exception of no mechanic has been able to solve my biggest problem so far.

05 2.3L Mazda 3 (Sp23), NO CODES, AUTOMATIC