5KT starting problems

[DGraber460@aol.com]

Thanks to Scott M's great site & advice, I pulled the codes, and found no 
faults (patient is an 85 5K turbo non quat). The car was starting very hard 
if at all when really cold (25>). The only way it would start when that cold 
was to hold the throttle to the floor and crank it a _long_ time, after which 
it gradually come to life. Tried to check the frequency valve, but couldn't 
get the port to provide any reading. The weather is now warmer (30-40) and it 
cold starts OK, but after reaching op temp and setting for about 15-20 
minutes, it starts but will not run unless the throttle is held open and 
blipped repeatedly. After about a minute of this, it clears up and runs good. 
Would that indicate leaking injectors? Is there a clear way to test them?
Still trying to sort this beast out to trusted reliability. Help!
TIA 

Dennis