FIXED: Idle was HIGH, now too low, popping and missing VIDEO, Solution was CHT Options

[ctc911ctc]

I could not get the idle down below 1800, I took the advice from the excellent suggestions within 914world-garage and replaced EVERY gasket in the vacuum chain, including fixed a leaky plenum. """But mine looked so good - it can't be leaky! """ It was VERY leaky!

When I rebuilt the plenum (both sides of the support columns were leaky) and put it all back together, the resulting idle was way too low. I now have the reverse problem!

If I open up the ARR (remove hose) the idle is still low. If I take off the air cleaner and loosen the idle screw (all the way) still around 800-900. hhhhmmmmm.....

Throttle works, car will rev.
When driving the car it runs ok, however it does not have the power it used to have.

Engine is popping/missing, though the audio is not optimum, check out the video:

https://youtu.be/p5uM67DXJnk

Looking for next steps, what would you do next?????? (IMG:style_emoticons/default/WTF.gif) (IMG:style_emoticons/default/WTF.gif) (IMG:style_emoticons/default/confused24.gif) (IMG:style_emoticons/default/confused24.gif)

Background; '74 2.0 all STOCK with 20K miles, I have rebuilt:

throttle sensor PCB
Throttle control - does not leak, very smooth control, set spec on the electrics.
MPS - tested and perfect
PCV - seems to work
Injectors - just back from Hurst injectors - all on spec
Distributor - clean and spiffy, advance works
plugs - new
AAR - tested and works
Computer Control Unit - I have 2, have swapped them and they both perform the same.
Flow Down - on spec
Dwell set
Timing set

Many thanks in advance

CTC911CTC