Alright so for the past two weeks my car (87 gxl) has started up just fine after I figured out my electrical issues, it hasn’t been driven hard in a while cause it was sitting and now I’ve only had time to drive it around once a week. Today I get in, let it warm up and went off. Everything was completely fine till I decided to fill it up cause it was getting pretty low. I go through my normal routine with premix and checking the oil, I go to start it, starts right up then dies immediately. This happened a couple times before I held the throttle open and it idled on its own after a couple seconds. This is very similar to a flooding issue I had on hot starts a couple years ago but it feels different, cause when that would happen it would struggle to even start. My guess is a vacuum leak somewhere so I’ll start there. I also have had more fuel in my oil than usual, nothing concerning I don’t think but noticeable. I’m also gonna replace my injectors cause that’s been a long time coming, and hopefully that’ll fix my oil situation, and possible some of the other oddities. What is your guys opinion?

Edit: once it started going it drives fine, at least for a 7 that’s been sitting a bit in 40° weather. Another thing to note that I’m not sure is related is the oil pressure, it now idles at about 40-50 and goes to 75-90 under load. This is new as of today as well

 

If I had to assume, its probably cause of the cold weather and some low compression. As, that can affect the warm starts. Especially, since you hold throttle for a a minute then it idles fine is a sign of that. So, definitely check for any vacuum leaks first. However, it may just be its a little chilly.