A fun fact I would like to share:
I bought a 1986 Toyota Pickup 4X4 with a 22re blown head gasket, replaced everything but the timing chain cover.
- New head
- Water pump, oil pump and timing chain kit
At first startup after the install it was losing coolant and my oil was “milkey” again???
Headgasket blown again after rebuild?
I did a coolant pressure test and it couldn’t even hold pressure?
So what was the culprit?
The old timing chain plastic guide broke and the chain dug into the timing chain cover creating a passage from coolant to engine oil (crack was behind the water pump housing)
I replaced the timing chain cover & metal guides, so far so good.
So if you ever see a broken plastic guides on 22re replace them ASAP and if you see the timing chain cover scored from the chain, throw it away and replace it with a new one. I made a mistake assuming it was a blown Headgasket but in reality it was just the timing chain cover.
Best regards,