What's up everybody. Wondering if anyone could help me out. I have a 2009 Scion xB 2AZ-FE motor. It ran super low of oil. Was driving it home from work and it just started to loose power. Came to a stop light. Motor died out.
I let it cool off for 10 minutes. When I went to start it up. Sounded like Motor had no compression at all. I towed it home. And did a compression test. And sure enough. No Compression in all cylinders.

What could be the problem?


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Pretty sure you answered your own question...you ran it, and continued running it, super low on oil and then the motor died.

When you brought it home and let it "cool off for 10 minutes" before you tried to start it again please tell me you at least put oil in it.

These engines were infamous for oil consumption and a poor piton ring design to begin with. If I were to guess, the reason you don't have any compression is that the cylinder-to-ring seal isn't there as the already poorly designed rings and/or cylinder bore likely wore to the point that they no longer seal and hold compression.

Frankly, I'm surprised that happened before you experienced the joy of hearing those rods knocking around but I'd bet that wasn't far behind.

Net-net is you're more than likely due for either a full rebuild or replacement engine.

 

Quick guess, you've blown at least the rings on each piston, especially as there is a known issue with the design of them. Also most likely you've scored the cylinder walls and possibly the pistons. If you're lucky you may not have burnt out the rod and crank bearing, but likely have, and possibly scored the crank shaft. You'll need to take the engine apart to see how far the damage goes. Unless you want to do a complete rebuild your best bet will be to look into a replacement short block engine.

 

Yeah, replacement engine is fastest and cheapest route. You can get engine from pick-n-pull yards for couple hundred. Then spend weekend swapping it in. Much, much easier than trying to repair existing one.