RE: Q: BAD Hesitation, studder while accelerating?
Heres a few things to try:
1. DITCH the stock plug wires for $30-$40 dollars you can buy some new MSDs, or Magnacores
2. DITCH the stock plugs while your at it, go for some NGK 4306s, or Iridiums gapped a bit closer around .045-.040
3. Check your TPS sensor wiring, with the car running wiggle the wires, if the idle cuts out, its bad.
4. You could check your injectors but its highly doubtful they would cause the problem.
But heres how to check them to see if their leaking and you have a fuel issue.
1. Let the car run for a few minutes, then shut it off.
2. Open up your engine bay PDC and take out the fuel pump relay
3. Start the car again, it WILL be a pain to start, but start it and let it run until it dies
4. Replace the relay
5. Grab a big piece of cardboard, youll see why later
6. I believe its a 13mm deep socket that you need to unbolt the "pawns" that hold the injector cover on, this will release the rail
7. Pull hard, but not too hard, leaving the injectors clipped onto the rail, and remove the rail with the injectors facing towards the front of the car
8. Now grab that piece of cardboard and put it underneath the injectors, fuel will only shoot about 4-6" out of them, so dont worry about it getting everywhere.
9. Make sure you have someone with you to watch the spray pattern of the injectors. Now crank the car for 5-10 seconds (it obviously wont start), and watch to make sure they all spray evenly. Shut the key off.
10. Look to see if any of the injectors are dripping. Not even ONE DROP should come out of them, if it does, they're bad.
11. Try this 2-3 times to see if the results change. Shift the cardboard to the side so you can have room for a new spray pattern.
12. Put everything back together, but make sure you put lubricant on the injector o-rings or you'll risk damaging them while trying to put them back in.
13. If they dont slide in properly get them in as far as you can, then begin to tighten the rail back down, as the rail tightens the injectors should "fall" into place.