i have an 81 that starts right away but wont stay running unless i give it throttle, when i take my foot off it dies. anyone have any ideas

 

Umm raise its idle? Give it a tuneup? Hows it sound?

 

Check the idle mixture screw. Does the car idle after it's warm? How does it idle?

 

I had the same problem, found it to be running way to lean. Check for vacuum leaks then adjust the mixture would be my suggestion.

 

i was looking at the rats nest and found where someone previous to me plugged the rubber tube going to the shutter valve solenoid but didn't do anything to the metal tube it came off ,just left it open. also how do i know if the shutter valve is stuck on or not. oh yeah, i pulled the spark plugs out and the ones for the rear rotor were fouled. maybe i have more than one problem. problem

 

check for any vaccum leaks. i had the same problem on my 12a and it was because one of the intake bolts was loose