Teething Problems with 77 911s

[unclebilly]

I've just started to drive the car I hauled from Ohio to Alberta last week and am having some problems...

Problem #1

The idle hunts and often quits - I've scoured the board and this seems to be the mixture setting which I plan to adjust (for now I just increased the idle). While I was doing the idle, I noticed a vacuum port with no line connected (1st vacuum leak), it is on the throttle body right near the air box - any ideas what should be connected there?

Problem #2

The car sometimes won't start hot - fuel accumulator is my guess. It just cranks and when it does fire it stumbles at first.

Problem #3

The car sometimes won't even crank - all I get it the fuel pump relay clicking when I hit the key. Eventually it goes - starter solenoid is my gues from 15 years of working on Detroit Iron.

Any help or suggestions would be appreciated.

[MichiganMat]

Problem 2: replace the fuel check valve first, its cheaper and it fixed my hot-start problems.

Problem 3: check/replace battery terminals, cables, and all connections. My SC wouldn't crank over either until I changed it all.

[Paulporsche]

If you do some searching you will find some photos and some diagrams and exploded views showing how the vacuum lines are routed.

Your idle hunting is probably caused by a too rich mixture, although you should fix that air leak before you change the CO setting.

This should help w/ Problem 1.