I'm not sure. I'm not sure why they wouldn't have but they said the system is definitely pressurising somehow
This is the 1.8 diesel
As you have changed the important parts, I can not see anything other than headgasket or the replacements have failed.
Or a pump timing issue. But that would cause running issues
@lynx started
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I'm not sure. I'm not sure why they wouldn't have but they said the system is definitely pressurising somehow