1974 1.8L FI Vacuum hoses? Options

[JeffBowlsby]

Which of these two diagrams is correct...the top or bottom one?

The difference is the hoses at the dizzy vacuum can...they cannot both be right.

[NOTE: I deleted the incorrect diagram originally posted...the diagram remaining is the correct configuration]

[Cap'n Krusty]

There are some disturbing errors throughout this thread, and they need to be addressed.

MY 1974 and MY 1975 1.8 equipped 914s sold in the US were all equipped with L-jet electronic fuel injection. There were NO 1973 MY 1.8s, nor were there any 1976s. None were equipped with D-jet EFI. All 1.8 L-jet engines were equipped with dual vacuum controlled distributors, and with dual vacuum port throttle bodies. None were equipped with vented cylinder heads. As the vacuum retard function of the distributor is required for both ignition timing and control of the idle speed, none were vented to the atmosphere, and all used the vacuum advance function, as well. Because starting and running in an L-jet engine depends on ALL the intake tract air passing through the air flow meter (AKA "air mass meter" or "air box"), the system is sealed. Common leaks, which will prevent the engine from starting, are loose, cracked, or disconnected hoses and fittings, missing or damaged oil filler gaskets and o-rings, and loose or damaged valve cover gaskets. The 2.0L 912E induction system shares all the characteristics of the L-jet equipped 1.8L cars. L-jet equipped 914s are unique in that they're the only 914s to require the timing to be set at idle, and there's a specific procedure for doing so.

The Cap'n

[zonedoubt]

...there's a specific procedure for doing so.

Here it is, courtesy of the Cap'n.