Thanks for the answers. I am aware of those possible causes of startup smoke as well as valveguide seals too. I do have 50 years of personal car repair experience just not much on computer electronic controlled systems or Toyota V6 2004 vintage tendencies. You guys helped me on checking smog system sensors recently. There is no evidence of Coolant loss or water in oil but the oil was a low. I added oil and will closely monitor usage.
I have owned the car for 5 years and have never seen near this level of smoke when starting cold so I am sure something has suddenly failed. My guess is a value guide seal. I just have never seen one go overnight. With the low mileage on the car and never having been over heated it would typically not be a head gasket, cracked head or block or even a value guide seal at this stage of motor life.
Any other suggestions or comments would be welcome. I thought about pulling the coil wire and turning it over in the morning then pulling the plugs to look for oil or water foiling. I gather it would tell me which head side is bad or if neither is bad.
So let me ask you:
1. Is this engine prone to early head gasket, head failure or vaule guide seal failure?
2. Am I right that a fuel mixture failure would have triggered a check engine light?
I appreciate you thoughts as I am questioning my own engine knowledge having never had a Toyota suffer from a fundimental engine issue at such low milage.
Friday, January 4th, 2013 AT 8:42 PM