MadMexican

Good morning. I think I'm in the new members area. I have a 2004 Toyota tundra base model with the 3.4L 6-cylinder engine. My brother bought it new and didn't use it much. He gave it to me for my birthday a couple of years ago. Love my truck. It has dings and scratches but mechanically it is in good condition with 157k miles on it. I need some advice and would appreciate you pointing me to where someone may have already started a conversation. The engine has this thing where it will burn the spark plug on cylinder 4. My brother and now I have to replace it at least twice a year. The spark plug does not look damaged, just burnt. I replace it and the truck is back to normal. Yesterday, I cleaned out the MAF senser, the Throttle intake. I replaced the gas cap. Replaced a couple of vacuum hoses, the spark plug wires. I did all this because I recently replaced all the plugs. I put in the Denso double platinum plugs. It felt more like a vacuum leak. But since the code it was throwing was a misfire on Cylinder 4, I replaced the plug, and the problem went away. I don't believe it's a head valve, but maybe. Anyway, any advice would be much appreciated.