Post
by Gypsie » Fri Jan 24, 2014 11:43 am
I know I am late in the conversation but.... I think I see a major contributor right here:
Camshaft is a Webcam 107i the correct, corresponding Webcam hydraulic lifters. Yes, I know it's not stock for a 1976, but I'm confident it was running correctly since it was in good order on while running with carbs.
This right here can be giving you quite a little runaround.
This cam has given me some issues, 'specially at idle, if there is any substantial altitude, when cold, or very hot...
The advice you have received so far, IMHO, is spot on.
Assuring that your 'foundation' is solid: Timing, advance, vac integrity, valve adj., spark, fuel pressure, etc are all needing to be right where they need to be, otherwise any fuel delivery adjustments will be set with wonky parameters.
Making adjustments to Fuel delivery with injection is a very nerve wracking proposition....at first.
Yes you can blowtorch valves in a short time by setting things improperly. Or you can foul plugs quickly and create poor performance that can lead you astray. ("I just changed those plugs, it can't be them". Who wants to keep pulling plugs to see if they are fouled...)
Sing it with me..."The mix bone connected to the time bone, the time bone connected to the flow bone..."
Anyway, I digress..
Familiarizing yourself with the afm adjustments will go a long way to a volken mind meld...
Where the manual's "one cog" adjustment is playing it safe, Colin's 6 cogs speaks with a loud clear voice, and is intended to speak to your understanding of what is happening in the works.
Make the adjustment, do some diagnostics, take it for a drive, think on it a bit.
Let it cool, check some parameters, lather,rinse, repeat.
You have given this machine a heart transplant, and you have a heart you can pretty much play around with.
I am curious to know if you have confirmed that both vac and centrifugal advance are doing what they should be doing. advancing to the right spot at the right rpms and then returning to the right spot after?
also..
Is your timing set using high rpms or at idle?
Just curious.
So it all started when I wanted to get better gas mileage....