![]() A key way to avoid losses is learning how to avoid a margin. Theory on why these engines crack heads is quite simple. We're busy attempting a cylinder-head replacement on our 1KZ-TE. The 1KZ-TE engine (and head) is as reliable and well made as any other good Toyota engine. Worst one is the 3c-t engine fitted to enemas-lucidas they all crap out no matter what you try and do to prevent it. Its design combined with poor R&D that makes toyota diesel heads crack. Are there other ways to check for a cracked head without taking the head off for a visual inspection? I have also read that obvious clues are loss of coolant and/or bubbles coming through the coolant. I would imagine that this test may be more accurate with a warmed up engine. What I have read so far is that the coolant system can be pressurized, and then you check to see if the pressure remains after a period of time. ![]() I have a rough start from cold and the occasional stutter in my idle, which I have read match some folks with this engine's cracked head symptoms. The head was replaced on the engine before I got it on mine, but I would still like to check it to make sure. ![]() Hi all, With all of the talk about the frequency of heads cracking on the 1kz-te engine, I would like to find out what definitive test can be done to determine if the head is cracked. ![]()
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