1975 1.8 L L-Jet, Questions... Options

[jim_hoyland]

Over the weekend, I read several threads on the L-jet hose connections; then went and looked at mine. Map a map so I could verify the connections. I have a couple of basis questions now:

1. The throttle body has two small hoses; one goes to each side of the distributer-retard and advance vacs.
Question: Does it matter which goes to the advance and retard ?

2. AAR valve was tested and it closes when 12 volts is applied.
Question: How far should it open ? Looked about 25% open to me; and a second one does the same.

3. The decel valve has 2 large hose connections and one small one. the small one hooks up in a Y to the Fuel pressure regulato, ant hen hookk to a second Y to the ERG and then to the plenum.
Question: Is this correct ?

4. Are the boots , between the AFM and throttle body replaceable with any after market products?

[Cap'n Krusty]

QUOTE (alpha434 @ Mar 6 2006, 11:36 PM)

Hmmm. That's funny. My throttle body doesn't have the distributor retard plug. That's because there were a few different revisions to the L-jet. When you go to look up the diagrams, make sure that your engine number matches the chart number.

914 L-jet ALWAYS has a retard connection. Setting the timing correctly requires it. The larger nipple on the TB is the retard fitting, the smaller the advance fitting. You need them both. SOME later 2.0 VW Busses used single vacuum, but that distributor is inappropriate for use on a 1.8 914. The Cap'n