Any suggestions?, Vapor lock? Or? Options

[Ebradley]

I have a 74(2.0) that has issues when it’s hot outside. I’ll drive it and then it won’t start or stalls when stopped. It tries to start crescendo like ramping up faster and faster and when it does I have to keep the RPMs going or it will die. I’ve never had a problem when the weather is not hot. Until today. I drove it this morning and it’s cold outside, and I’ve encountered the same issue. Any ideas? Vapor lock? Not even sure. Thanks.

[wonkipop]

is it starting ok after being left over night?
and then being difficult after you have run it for a while?

this can seem like a hot start v cold start scenario but not due to vapor lock.
rather a blocked fuel line somewhere. either collapsed line or blocked filter.

if so i'd check out what @JamesM is hinting at.
if the fuel pump is in original location check the plastic cube fuel filter just before the fuel pump. under the car near the pump. could be clogged. good first port of call.

agree with @JamesM about installing a full flow high pressure filter after the pump.

check the eletrical connection to the pump. make sure its not corroded or loose.