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Thread: Head gasket again !!

  1. 18th February 2015, 10:59 AM #1
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    Head gasket again !!

    Just found out the problem with my coolant blow off and mild overheating is a head gasket. Block has pressure tested out as ok apparently.

    My question is that the head gasket was done about 2 years or 30000km ago.

    Is it usual to go again in that short time frame? What could cause that.

    Some one has suggested that if it had been badly overheated at some time then both the block and heads should have been machined to match ?

    Pete
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  2. 18th February 2015, 11:03 AM #2
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    Quote Originally Posted by land864 View Post
    Just found out the problem with my coolant blow off and mild overheating is a head gasket. Block has pressure tested out as ok apparently.

    My question is that the head gasket was done about 2 years or 30000km ago.

    Is it usual to go again in that short time frame? What could cause that.

    Some one has suggested that if it had been badly overheated at some time then both the block and heads should have been machined to match ?

    Pete

    Pete, was wondering if the head gasket let go between cylinders 2 & 3, do you have a pic of the gasket, I am assuming you are talking about a 300TDi as you refer to "head" in the singular, Regards Frank.
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  3. 18th February 2015, 12:53 PM #3
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    Deleted. OP forgot to specify engine type...
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  4. 18th February 2015, 02:14 PM #4
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    Quote Originally Posted by Tank View Post
    Pete, was wondering if the head gasket let go between cylinders 2 & 3, do you have a pic of the gasket, I am assuming you are talking about a 300TDi as you refer to "head" in the singular, Regards Frank.
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  5. 18th February 2015, 03:22 PM #5
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    I would say either cooling system isnt up to scratch or the heads werent checked or machined prior to replacing the head gasket.
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  6. 18th February 2015, 05:32 PM #6
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    Quote Originally Posted by land864 View Post
    Just found out the problem with my coolant blow off and mild overheating is a head gasket. Block has pressure tested out as ok apparently.

    My question is that the head gasket was done about 2 years or 30000km ago.

    Is it usual to go again in that short time frame? What could cause that.

    Some one has suggested that if it had been badly overheated at some time then both the block and heads should have been machined to match ?

    Pete
    I agree with loanrangie, Regards Frank.
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  7. 18th February 2015, 08:59 PM #7
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    If it wasnt hot tested you might have a leak around a liner
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  8. 18th February 2015, 09:33 PM #8
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    Thanks guy

    1.Deleted. OP forgot to specify engine type... I'm not sure what that means. I think my sig says I have a V8D1.
    2. You may be right about the heads possibly not being machined. The owner at the time certainly paid for that, as well as crack and pressure testing,
    3, The cylinders all pressure tested as ok. Maybe not a hot test, What exactly is that?
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  9. 19th February 2015, 09:22 AM #9
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    Quote Originally Posted by land864 View Post
    Thanks guy

    1.Deleted. OP forgot to specify engine type... I'm not sure what that means. I think my sig says I have a V8D1.
    I wrote a post relevant to tdis then deleted it. I have signatures turned off in my settings.
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  10. 19th February 2015, 04:07 PM #10
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    Quote Originally Posted by land864 View Post
    Thanks guy

    1.Deleted. OP forgot to specify engine type... I'm not sure what that means. I think my sig says I have a V8D1.

    Easy to miss the exact vehicle wiith all those listed in the signature, only noticed the Had: after two looks.
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