cbradley
Adventurer
I am curious to see if anyone has any advice.
I have a 2004 4Runner with about 140k miles on it. The other day the check engine light came on. I pulled the code and it indicated a cylinder 6 misfire. I took it to my mechanic and he found the cylinder 6 spark plug looked like it had some junk on it. He replaced the spark plug and switched teh cylinder 4 and 6 coil packs. He also replaced the air filter because he said that it looked like it had gotten some water in it. Everything ran well for about 24 hours.
Yesterday morning I got into the car and it was idling rough and the engine light came back on. I shut it down and left it until today. I headed back to the mechanic and on the way there the thermostat pegged. After several attempts to keep the engine temp down, I gave up and had it towed to the shop. The engine code showed the same issue, misfire in cylinder 6. The shop said that there appears to be moisture in cylinder 6. The best guess at the shop is that the head gasket has a leak and will need to be replaced.
I have no idea how water could have gotten into the air filter. While I have done some water crossings on occassion, the water has never been higher than 2 or 3 inches above the door sill, which is well below the air intake. Unless a big puddle splashed just right or some freak event at the car wash occurred, I have no idea how this happened.
Has anyone else run into this problem before? Any advice? Does anyone think this could be anything other than a blown head gasket? I am shuddering at the thought of what this might cost to repair. Thanks for any advice you may have. This is the first problem I have had with the 4Runner, but it sure looks like a big one.
I have a 2004 4Runner with about 140k miles on it. The other day the check engine light came on. I pulled the code and it indicated a cylinder 6 misfire. I took it to my mechanic and he found the cylinder 6 spark plug looked like it had some junk on it. He replaced the spark plug and switched teh cylinder 4 and 6 coil packs. He also replaced the air filter because he said that it looked like it had gotten some water in it. Everything ran well for about 24 hours.
Yesterday morning I got into the car and it was idling rough and the engine light came back on. I shut it down and left it until today. I headed back to the mechanic and on the way there the thermostat pegged. After several attempts to keep the engine temp down, I gave up and had it towed to the shop. The engine code showed the same issue, misfire in cylinder 6. The shop said that there appears to be moisture in cylinder 6. The best guess at the shop is that the head gasket has a leak and will need to be replaced.
I have no idea how water could have gotten into the air filter. While I have done some water crossings on occassion, the water has never been higher than 2 or 3 inches above the door sill, which is well below the air intake. Unless a big puddle splashed just right or some freak event at the car wash occurred, I have no idea how this happened.
Has anyone else run into this problem before? Any advice? Does anyone think this could be anything other than a blown head gasket? I am shuddering at the thought of what this might cost to repair. Thanks for any advice you may have. This is the first problem I have had with the 4Runner, but it sure looks like a big one.