The car started missing one day so I replaced the plugs and wires and it ran worse. When I pulled the old plugs out the seemed fine, when it ran worse with the new plugs I thought it was the coil pack so I changed it. Then the parts store said that I had the wrong type of plugs and when I took them out number 5 was fouled. Fast forward I replaced the plugs wires and coil twice, still numberr 5 fouls. The plug comes out black, not oil. I thought stuck injector, I stopped asking the autoparts people for advice. I took the injectors out preassure checked and cleaned them but none were stuck but I put them back in different locations anyway. Still number 5 fouls out imediatly. WHAT THE. Im think electrical now but dont know where to start.
It don't sound electrical to me sense you chg. all that, the plugs you put in are they a hotter plug? You don't by chance have a broken valve spring do ya, thats what it sounds like to me. Just sounds to me that its valve spring most likely exhaust valve.
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Ok, I did a compression test and all cylinders are at 120 lbs and then I took off the valve cover to check for broken springs and stuff and everything is in order. I put the car back together and disconnected the injector for number 5 and started the car and it ran smooth (no popping) but with the obviouse miss. Im thinking computer?
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