I have a 2005 Tacoma (206k miles) and a '73 40. This is my first post here related to the Tacoma. I think I blew the tacoma engine - 1GR-FE - 2 weeks back going up and over Monarch Pass. The CEL came on. temp rose, and it then essentially lost compression all within about 3-5 minutes once I was down the pass. Smoke and boiling coolant in the overflow as I came to a stop. It looks like the HG or block cracked because I lost the coolant somewhere along this way.
Once it was towed home ... I added water to check radiator and watched it flow out through the exhaust:
cylinder 1 had compression at 62psi (well below the ~170 target) ... leak down ~73% loss
cylinder 5 looks similar ~82% loss
So. I think next steps would be to remove the head and check the gasket and block to look for the source. If anyone has any other recommendations before tearing into the engine please let me know.
I am also starting to look at swapping with a lower mileage 1GR if I can find one ... so if anyone has any recommendations I'm all ears.
The last pic I took of the truck in action fooling around about a month before this happened -- I was really looking forward to some mountain time with the truck ... maybe next summer. 35s. 488s. double locked. ready to go ... needs an engine
Once it was towed home ... I added water to check radiator and watched it flow out through the exhaust:
cylinder 1 had compression at 62psi (well below the ~170 target) ... leak down ~73% loss
cylinder 5 looks similar ~82% loss
So. I think next steps would be to remove the head and check the gasket and block to look for the source. If anyone has any other recommendations before tearing into the engine please let me know.
I am also starting to look at swapping with a lower mileage 1GR if I can find one ... so if anyone has any recommendations I'm all ears.
The last pic I took of the truck in action fooling around about a month before this happened -- I was really looking forward to some mountain time with the truck ... maybe next summer. 35s. 488s. double locked. ready to go ... needs an engine