vacuum advance and throttle body, i have huge hesitation issues -need your knowledge Options

[arc914]

Hey teeners
ok here is the scoop.new complete rebuild of my 74-2.oL with parts from you guys(thanks) but i am having huge hesitation issues from first to third and not so bad in 4-5th. i have all new vac lines to install except that from my distributor to my throttle body i can't put a line because there is only a blank spot where a line should connect.
Why is this.When i bought this from the club i asked for a 2.0l throttle body and it works well except with this vac line issue.
should i swap this for one with the connection or make the connection myself?
What do the guru's advise.

i only have another 4 weeks tops before i have to put her in storage till next year (come out in may) so i am hoping to remedy this ASAP.
help.
Cheers
andrew in the Soo (IMG:style_emoticons/default/WTF.gif)

[Bleyseng]

tell us your FI part numbers (ECU,MPS, etc) as hesitation can be a lean running condition and not a dizzy issue.

that said, your advance plate could be sticking so pull the dizzy apart and clean clean and lube the underside of the plate so the centrifugal advance works smoothly/ (IMG:style_emoticons/default/thumb3d.gif)

ya don't really need the vac advance (IMG:style_emoticons/default/burnout.gif)

[pbanders]

tell us your FI part numbers (ECU,MPS, etc) as hesitation can be a lean running condition and not a dizzy issue.

that said, your advance plate could be sticking so pull the dizzy apart and clean clean and lube the underside of the plate so the centrifugal advance works smoothly/ (IMG:style_emoticons/default/thumb3d.gif)

ya don't really need the vac advance (IMG:style_emoticons/default/burnout.gif)

Here's a quote from the Bosch "Ignition" technical guide on the purpose of the vacuum advance:
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"EARLY" (advance) adjustment system

The lower the load, the earlier the air-fuel mixture needs to be ignited since it burns more slowly. The percentage of burned but non-exhausted residual gases in the combustion chamber increases and the mixture becomes leaner.
--------------------------------------

Thought it's not explicitly stated, it appears the function of the advance is to improve efficiency and reduce emissions under steady part-load conditions. I doubt it has any significant effect on throttle response. VW/Porsche removed the system in later 914's. Why? No idea.

Here's a tip - most owners haven't checked the condition of the points plate in their dizzy in years. Often, they're clogged with grit and need cleaning and lubrication for the vacuum adv/ret device to work properly.