PO307 code after induction/TB cleaning, no prior issues
#1
PO307 code after induction/TB cleaning, no prior issues
I did the induction/TB cleaning the other day and got the SES light cleared at Advance Auto today. Five minutes later the light came back on, so I went back to check the codes and find out what was going on. PO307 shows up, a cylinder 7 misfire according to the scanner. I had the code cleared again, and the SES light didn't turn back on until I had driven fifteen miles or so. I've never had the SES light come on before the induction cleaning during the 8 months I've owned the Disco. Any ideas on what I've broken and how to fix it? Thanks
#3
I sure hope you're wrong about the head gasket leak! I pulled the plug and initially thought it looked OK color wise, but upon close inspection the electrode is gone, black in color, certainly beneath the insulator. I pulled the plug next to it and the electrode definitely protrudes from the insulator as it should. The previous owner installed these Bosch Platinum Plus plugs with new wires about a year and half ago, less than 10K miles. Did the Seafoam and TB cleaner maybe grenade the spark plug? Should I replace all of the plugs or just the bad one?
#8
In any event, I opened the service history and found I was wrong, the plugs had been replaced over 20K miles ago, so they were a bit older than I thought. I bought all new plugs, Advance had Denso double platinum plugs on sale for $1.99, so I installed those. I had the SES light cleared again, drove for 20 miles with no return of the light. I suppose the one plug could have been bad as all the rest looked quite normal and uniform, althought they did have more wear than I would expect for 20K on platinum plugs.
The wires are light gray and say "Leoni" on them, maybe cheapo wires? I don't know if they are any good or not so I'll probably order a set of Magnacores. From the looks of it, the wires won't be nearly as easy to change as the plugs were.
#9