Replace head gasket and what else

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Replace head gasket and what else

Postby M100Brisbane » Thu 07.08.2025, 01:57

So the M100 gods have not smiled again, and I have a head gasket failure.

Before I start ordering gaskets and stuff, what else should I be attending to while its in pieces.

I'll certainly do the timing belt, water pump and idlers.

Also Cam angle sensor seals

Should I have the injectors cleaned?

What else?? Coolant hoses are two years old.

Gratuitous pic to cheer everyone up - mine is the black one.


Thanks in advance
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Re: Replace head gasket and what else

Postby Tuga2112 » Thu 07.08.2025, 09:40

depending on how you disassembly the whole shebang.

if i had to do that again.

I would consider changing the IAC valve. (assuming you can get one for 10-15 quid (gbp) as they are unique to the M100 but not. because the vauxhall part does the job, but the plug is hell to install.(and with the head out its a dodle)
also refurbish the turbo, since you gota take the exaust manifold out it will be a dodle to get the turbo (and heatshields) sorted
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