Thanks for your comments.
It is one canister with two pipes going into it, and is exactly as shown in both Haynes and the green Volvo service manual so must be standard for this car.
They both show the connection nearest the distributor as for the tube from the intake manifold and the one furthest away as for the tube from the carburettors. The diagram shows two diaphrams inside the vacuum unit.
I will put the timng light on it tomorrow as you suggest and let you know the result.
According to the volvo parts manual the distributor should be part number 241532 for this ca rwith the B30A engine.
|