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i just replaced my heads in hoped of fixing the miss and it still has a bad miss and i need to smog the truck and i dont think it will pass. i can hear the miss at the the exhaust it sounds steady but i cave no clue what it is. now i cave a new code for #1 o2 sensor i dont think its related to...

i have a 2000 durango with a 5.9 and it was misfiring bad it was so bad it was almost undrivable the codes came back to #1#2#6 misfiring and a miltiple misfire code i did a compression tast and #1 was 124psi and the rest were about 150psi so i pulled the heads and there are small cracks on 3 cyl...