well i searched through the archives and found alot on this topic. and although none of them really sounded like the problem i am having i started trouble shooting. well it dissappeared for about two weeks and now its back and really don't know what to do next.
THE PROBLEM: i don't know if its really considered a hesitation, but when i try to accelerate, not so much at WOT but sometimes, the trottle response is horrible and i can feel the car jump in acceleration from more power to less power. and it seems like it gets more common as the car warms up.

for an overview of my ignition, i have and MSD GM blaster coil, MSD superconducter 8.5mm wires, Bosh platinum +4 plugs, and I also just replace my fuel filter.

i also checked for codes to see if i have a bead sensor somewhere and i have no codes. so i am confused now at what can be causing this, since my ignition is almost entirely MSD and brand new.

two weeks ago i ran the engine off of five plugs, going one cylinder at a time to see if maybe a cylinder isn't fireing, but the idle was much more rough w/o a plug than it has been trough acceleration. then ironically after checking for codes the problem dissappeared. oh, and i also had to re-tighten my exhause manifold becuase two of the bolts came loose and it was leaking.

i know this is a lot of info, but i am trying to figure out what the problem may be....any insight would be great!! i have never checked my timing, i don't know how that affects a car, and i don't know what to check next....thanks for any help, Rob

1990 Firebird 3.1
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ASP underdrive pulleys
MSD GM blaster coil
MSD Superconducter 8.5mm wires
Home made C.A.I.
Hooker 2.5" exhaust (in my garage )

 

The problem is most likely in the ignition system someplace. If all the wires are in good condition and tightly connected on both ends, you may want to take a look at the condition of each of the plugs and make sure nothing is amiss there. The next step after that would be to check timing, you need a timing light and it will come with instructions on how to check it (it is really easy). Check and see what thestock timing is supposed to be set at and start there. If it corrects you problem, try advancing it a few degrees and you may end up with a little more power. If these don't fix your problem, more expertise than mine will be needed. This ignition stuff is still a little mystical to me, but I learn as I go. Good luck.

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'86 IROC-Z, 305 LG-4, T-5, T-Tops, 50k Original Miles, K&N Air Filter, Jet chip, KYB Shocks/Struts, Centerforce Dual Friction, B&M Ripper Shifter, Hooker Super Comp Shorties and Y-pipe, Catco Converter, Flowmaster 80 series, 3 inch custom exhaust