I'm having a problem with the 318 in my 91 Dak.
A couple weeks ago it started missing and backfiring extreamly badly and ended up being towed home. I found moisture in the distributer and replaced it and the cap. After that it started and ran fine, but would still miss during light accelation. I checked and adjusted the timing, now it only misses once in a great while during light acceleration, but pings or knocks a little under hard acceleration or pulling steep hills. The local dealership told me I had dirty injectors (Throttle body injection), pored a bottle of cleaner in the tank, charged $100 and said it should clear up shortly, well, it hasn't. I'm out of ideas here, any suggestions?
P.S. Ignore the signature please, I have an old Toyota that I beat up on the trails, my Dak is my daily driver, work truck, old reliable until now.