Spent a chunk of yesterday changing out the fuel filter on my GMC S-15 4x4 pick-up. As my prosthetic proved to be useless, I accomplished the task w/ just my abbreviated LH. Fired the beast up...runs fine at idle but still will NOT take any throttle...after replacing the in-tank fuel pump & fuel filter twice....flippin' maddening! Now feeling 20 yrs. older than I am....back to the service manual for more trouble shooting....