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Head Gasket Leak

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    Hey! I have a 2006 Scion tC with a leak in the head gasket. According to the mechanic fixing the head gasket will probably make the car prone to "smoking"? He's pushing me to do a complete motor replacement. Since the costs are quite high - $2,000+ for head gasket replacement and $5,000+ for motor replacement - I wanted to know if anyone has had the same issue or face a similar problem? Thanks, Ro
    roro-buf wrote:
    Hey! I have a 2006 Scion tC with a leak in the head gasket. According to the mechanic fixing the head gasket will probably make the car prone to "smoking"? He's pushing me to do a complete motor replacement. Since the costs are quite high - $2,000+ for head gasket replacement and $5,000+ for motor replacement - I wanted to know if anyone has had the same issue or face a similar problem? Thanks, Ro


    if the head gasket failed that means the head bolts pulled loose.. it is a known issue with the 2az-fe (yours) engine. but only if the water pump began to fail and it wasn't caught in time. the head could be warped, has to be checked by a machine shop. you should also look at replacing the water pump too. use only the toyota brand water pump, the aftermarket hasn't copied toyota's new water pump design. I'd also be asking that mechanic to use ARP brand head bolts. ARP makes a kit for our engine. I'd shop around see what other shops are charging, that seems a little high.
    Thanks! I am shopping around.

    Will look into the water pump as well. Just wanted to make sure a full motor replacement is not necessary.
    roro-buf wrote:
    Thanks! I am shopping around.

    Will look into the water pump as well. Just wanted to make sure a full motor replacement is not necessary.


    hey you're welcome! If the engine isn't consuming any oil then no need to replace the entire engine (block/pistons, etc). This would just be a cylinder head machining, then the ARP bolts, new water pump, re-assemble. No problem about the water pump, that's how these end up like yours. Water pump isn't working as good as it should, engine starts to overheat (slightly, you'll hardly notice it), coolant comes out the backside of the engine. You never see it! But if you've noticed your coolant overflow bottle level going down, that's a perfect sign it's happening! the other sign is the weep hole of the water pump (look down by the drivebelt) begins to weep coolant, looks like pink-colored ice. That's another sign it's dying.

    Also, I'd recommend the Toyota super long life coolant when you get done. It's about the same price as the aftermarket and it is the best. Not trying to sell all Toyota stuff but theirs is really good.

    good idea to shop around.. I'm thinking more like $1000-1400 for a cylinder head gasket job. Also they'll have to send the head out to a machine shop for flatness if they don't mention that, walk away. Good shops know the head has to be perfectly flat to seal properly.. let us know how it goes.. I know the scion forums are really slow, not a lot of us left out there! lol
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