Thread: Cylinder head buggered???

I'll keep them in mind. I cranked it up to 3K rpm on the hand throttle with the cap off the radiator. It bubbled at low revs but I think that was more to do with the vibration of the motor. At high revs it did nothing just sat there. It's a 3L, not a surf. Meant to be relatively bullet proof. Hopefully it's nothing major. Toyota does have some what of a reputation of bullshitting.

Chances are unfortunately it will be cracked ,,,we used to do lots of them still do a few ,,,,the 3L opposed to the 1kz's normally crack because they have been hot where as the 1kz can just let go,,,normally in a pre combustion chamber ,,,and even when you pressure test them can be hard to pick up.
Tk check will pick it up combustion issues most of the time ,,,but from the sounds you have more a coolant prob,,, on saying that there is a chance it is only a blown head gasket but you really need to get the head off and get it checked ,,you can normally see if the 3l's are cracked they go between the intake and exhaust seat or a fine crack from the pre combustion chamber.
If it is cracked ,,,the best bet is a new head and then you need to get a changeover done which is removing valve gear ,,,valves and springs etc and getting them changed over into your new head and geting the shim tapppets set ,,,this needs to be done by a machine shop ,,,if you get the head off ,,,,goood guys in taupo are Henson and murray ,,,talk to Brian or scott If you have any worries with parts or any other questions pm me