I've got a LH drive 460 with a carburettered B18K engine. On the bulkhead next to the cylindrical vapour separator is a large rubber grommet with a plastic cylindrical thing set in it. The grommet also takes the screen washer pipe through one side.

The only problem is that in an earlier photograph I have, this plastic cylindrical thing has a pipe on it which disappears off under the air filter casing toward the carb. Now, after having some work done on the motor this pipe is missing and there's no recollection of how it was plumbed in. The haynes guide refers to this item as a vacuum accumulator whilst The Volvo part description for this is a "cold start device", part number VO3446535.

Does anybody know where this thing connects on to the engine. I'm having hot running problems which I think are related to a vacuum leak and this missing pipe may be contributing.

many thanks
Peter