Drove my MDX on Jan 8th and it was running fine when I shut it off
Overnight it was -26C (-15F)and windy
Next AM it would not start - starter motor would not turn and engine would not rotate (battery is only 2 years old)
Got a boost - nothing moved
Got a boost from a tow truck - nothing moved but got some smoke from starter
Towed to a local Honda dealer
They said it needed a new starter and got it running
Immediately on starting there was VERY loud knocking noises from the engine. Sounded like it was coming apart.
Dealer got the oil pan off and lots of metal bits in the pan and heavy scoring on #5 cylinder wall.
I was 600KM from home and 200Km to closest Acura dealer
Only 124,000 Km on the vehicle. Oil & filter last changed at 116,877 KM on Oct 24th and I had oil analyzed and the oil was fine and absolutely no abnormal wear was present.
A used 3.7L engine was installed by the Honda dealer to get me back on the road. Got the car back on Jan 21st. The engine was later disassembled and the #5 piston had a big chunk broken off of it. First 3 photos)
The reason for the failure is not 100% clear at this time.
I posted at MDXers.org and another MDX owner in Wisconsin had the exact same failure under the exact same cold conditions on the exact same cylinder on Jan 7th. Their #5 piston has a chunk broken as well. (Last photo)
Has anyone seen or heard of a failure like this?
Any theories on the root cause of the failure?
Overnight it was -26C (-15F)and windy
Next AM it would not start - starter motor would not turn and engine would not rotate (battery is only 2 years old)
Got a boost - nothing moved
Got a boost from a tow truck - nothing moved but got some smoke from starter
Towed to a local Honda dealer
They said it needed a new starter and got it running
Immediately on starting there was VERY loud knocking noises from the engine. Sounded like it was coming apart.
Dealer got the oil pan off and lots of metal bits in the pan and heavy scoring on #5 cylinder wall.
I was 600KM from home and 200Km to closest Acura dealer
Only 124,000 Km on the vehicle. Oil & filter last changed at 116,877 KM on Oct 24th and I had oil analyzed and the oil was fine and absolutely no abnormal wear was present.
A used 3.7L engine was installed by the Honda dealer to get me back on the road. Got the car back on Jan 21st. The engine was later disassembled and the #5 piston had a big chunk broken off of it. First 3 photos)
The reason for the failure is not 100% clear at this time.
I posted at MDXers.org and another MDX owner in Wisconsin had the exact same failure under the exact same cold conditions on the exact same cylinder on Jan 7th. Their #5 piston has a chunk broken as well. (Last photo)
Has anyone seen or heard of a failure like this?
Any theories on the root cause of the failure?