my8thholden
nsw-club
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Model: FC
Posts: 836
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« Reply #2 on: June 27, 2022, 07:03:27 AM » |
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Trevor ..I'll just add a bit to what Rob has observed , a good engine really shouldn't be too fumie , but we know Holden greys can be , and the extent of oil fumes is caused by several things , engine temperature , grade of oil , combustion gas blow by , thats why Holden designed the engine with a breathable oil filler cap and a road draught tube ..that is clear evidence that fumes were expected and how to deal with them , when car is in motion and even fan air when standing , that air is supposed to enter mouth of filler cap go down and scavage the oil fumes , but it can gather oil mist also in the sump and push it out the road draught tube ,it is cut at an angle to help with a type of ventury suction also ..then they thought of PCV valves .. IS your oil filler cap clean ? , wash with kero every 5000 miles . the book says ..Is your road draught tube clear ? ..have been known to be blocked off ..How is your cylinder compression ? Those gasket rings in back of side plate around spark plug holes are a bugger , no easy fix , they can move ,to do a good job its side cover off , and that is not a quick job , I had one similar problem , the side plate was distorted , don't ask me how , it just was , and had to gently work it till it was even and we dry fitted it couple of times using chalk to check contact ..keep well Vern .
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