Go home Audi

[Jer]

Not entirely certain. It came to me with the lower water temp sensor pushed out and a no start complaint. I filled it with water and it poorer out of the lower hose where the temp sensor is. And dribbled from the thermostat. Pulled plugs and found crud on number four plug. Stuck a bore scope in and found debre. The valves wouldn't move when the engine was turned over by hand. The valves moved in the other cylinders.

Theory one: thermostat leaked a little and sucked in an air pocket. Overheated head at #4 cylinder. Pressurized cooling system and pushed water temp sensor . Dead engine. But doesn't really explain the metal to metal connection in #4. Piston is dead.

Theory two: jumped tooth, metal to metal, blown head gasket, pressurized cooling system. I suppose I should check timing. Maybe later. Too busy right now since it really doesn't matter it is dead no matter what.

I like two better for now. But need to look at timing to be certain.

Jumping a single tooth on that motor would cause it to run like ass but not make physical contact. Besides, if it did it wouldn't clear out one cylinder & seize locally. It would crash most all your valves into pistons & mangle them all real good. I'd need to see it myself to get a better guess but I wouldn't think it would be #2. Even if it had a balance shaft/belt that went it would pretty much give the same result I just described.

[tmleadr03]

Jumping a single tooth on that motor would cause it to run like ass but not make physical contact. Besides, if it did it wouldn't clear out one cylinder & seize locally. It would crash most all your valves into pistons & mangle them all real good. I'd need to see it myself to get a better guess but I wouldn't think it would be #2. Even if it had a balance shaft/belt that went it would pretty much give the same result I just described.

Yes. But all of that was secondary once I saw the parts in the cylinder. I thought about pulling the valve cover and also checking timing but I have been booked way too solid to do that. Had a cancellation today due to the snow and was happy for a little more time.

[Jer]

Yes. But all of that was secondary once I saw the parts in the cylinder. I thought about pulling the valve cover and also checking timing but I have been booked way too solid to do that. Had a cancellation today due to the snow and was happy for a little more time.

Part of me wants to see this in person so I can play detective too since I used to live for turning wrenches but the other part of me is thankful I own newer reliable vehicles under full manufacturer's warranty that I maintain so I don't have to worry about such things in 12 degree weather.

[Great-Kazoo]

Part of me wants to see this in person so I can play detective too since I used to live for turning wrenches but the other part of me is thankful I own newer reliable vehicles under full manufacturer's RECALL that I maintain so I don't have to worry about such things in 12 degree weather.

[tmleadr03]

Part of me wants to see this in person so I can play detective too since I used to live for turning wrenches but the other part of me is thankful I own newer reliable vehicles under full manufacturer's warranty that I maintain so I don't have to worry about such things in 12 degree weather.

You are welcome to come on down and tear into this 600 lb pile of scrap metal. I may or may not get around to messing with it.

[Jer]

You are welcome to come on down and tear into this 600 lb pile of scrap metal. I may or may not get around to messing with it.

A very generous offer indeed but I'm going to have to pass. I've got enough of my own issues that need addressed w/o taking on someone else's. ;-)

[tmleadr03]

A very generous offer indeed but I'm going to have to pass. I've got enough of my own issues that need addressed w/o taking on someone else's. ;-)

What exactly happened internally is not a major issue though. It done broke, need new. Curiosity may get the better of me when I have some breathing room, may not too.

[Jer]

What exactly happened internally is not a major issue though. It done broke, need new. Curiosity may get the better of me when I have some breathing room, may not too.

True.