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Originally Posted by schoir
There is supposed to be some slight suction (and an accompanying hissing noise) there. If there is extreme suction (this is starting to sound funny  ) then that is an indication that your AOS is failing. In that case, it will be very difficult to pull the oil cap off the tube.
Regards, Maurice. |
And that could also indicate worn rings are causing blow-by.
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Mike
04 Boxster S - Basalt/Savanna, 6sp, Carrera lites, hardtop
70 914-6 - Black over tan, original/stock
PCA since 1970
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