Vacuum line mixup?
Hi guys,
I may have a problem with vacuum lines going to choke and ignition vacuum advance at distributor. Those lines come from two thermovalve mounted into intake manifold to the firewall side. One is blue and is a tree way th-valve, the other one is yellow and is a two way th-valve. Here's how they are connected on my car:
{air-filter}==[17]=={yellow th-valve}==[18]=={choke opener & unloader}
{intake manifold}==[19]===T===[19]=={choke unloader & charcoal}
{air-filter}==[17]=={blue th-valve}==[25]=={ignition vacuum advance}
This is more or less what Haynes shows in some diagrams, however all Chilton's vacuum diagrams for all 3g show that [18] and [25] are swapped on my car.
On my car the blue th-valve is open between [17] and [19] and shut on [25] when cold (below 140F or 60C), and shut on [19] but [25] is bled when warm.
The yellow th-valve is always shut (it may be different during cold season, duno).
The vacuum diagram on my hood was long gone if ever been there.
Any thoughts ?
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