Hello to all I bought a 2001 mitsubishi diamante and it has a code po300 random mis fire,Well I changed the spark plugs and wires but the code is still there and the car still runs like it has a mis.I am wondering if the wires are crossed somewhere so do anyone on here have a spark plug wire diaphram for the 3.5 motor diamante?next I will check the fuel regulator,the fuel pump is new, or any pointers any help will do.Thanks

I need it from spark plug wires to distributor car diaphram

 

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Ok I checked the spark plug wires all is good,but still it has a miss now next step I will change the cap and rotor,if that dont work I will check the timing and see if that is off by a tooth or so.