What goes here?

Post by **bmdubya1198** » 07 Mar 2016, 17:05

I don't believe anything goes there.

Post by **Ozark Lee** » 07 Mar 2016, 17:40

That was for the very, very early PCV system and they just never changed the casting and they chanced the PCV. As was said, nothing goes there.

...Lee

Post by **boerence** » 13 Mar 2016, 21:45

Man - that is the cleanest engine I have ever seen! You obviously don't live where the snow is beat back with salt.

Post by **bmdubya1198** » 14 Mar 2016, 08:04

boerence wrote:Man - that is the cleanest engine I have ever seen! You obviously don't live where the snow is beat back with salt.

I was going to comment on that! That is a clean engine!

mnorris23 · Post by **mnorris23** » 19 Mar 2016, 17:45

I believe this hole is for the head to allow oil through. Not sure why the hole is there exactly but I am pretty sure that nothing goes there.

crlande · Post by **crlande** » 19 Mar 2016, 18:39

Air pump system (B 5254 S)
During cold starts, an electrical air pump is activated which directs air to the exhaust channels. This initiates a secondary combustion of exhaust gases which helps minimize hydrocarbon and carbon monoxide levels and reduces warm-up time for the catalytic converter.
The pump begins to function when the engine is started and the car begins to move. It remains in operation until the three-way catalytic converter has reached normal operating temperature. A sound may be audible from the air pump during this warm-up period. This is normal.
http://new.volvocars.com/ownersdocs/199 ... .html#8.14