88 325 Cranks then stalls! Help!

[ATL_E30]

I posted this in my build thread, but figured i'd post something here to get more visibility

1988 325 with 146k

I started her up this morning to let her warm up and she started idling pretty rough. I gave her a little gas up to about 1500 rpm and then she came back down and was steady at 700. This has been happening for about a week or so, but hasnt given me any issues after the initial start and it only would happen on cold starts.

This morning was different and the drive into work was interesting. There was a few times where it felt like she was losing power and shuddered a bit. If I come to a stop at a light or stop sign she would start to rough idle again and almost stall out. I did my best to get her into the office parking lot and once pulled into a spot let her just run for a bit. After about 30-45secs she completely stalled out. Every subsequent crank she fires up, but then immediately stalls. I'm hoping after I let her sit this afternoon she'll be able to crank and get me home. I'm going to go out around lunch once it warms up to try to take a video.

I don't know if this is related, but about two weeks ago I changed the oil (20w50) and oil filter. This is kinda around the time I started experiencing this issue. Do the Super Eta's need anything special oil wise?

Any idea's? Maybe fuel pump?

Thanks in advance!

[dnguyen1963]

Could be the pump or the sock is completely clogged. It could also be the injectors, CPS, or vacuum leaks. I would do a smoke test first to eliminate vacuum leaks since it is often the primary cause for this problem. Tee in a pressure gauge and monitor the pressure. Make sure the injectors are firing and not clogged. After all that and you still have problems then buy an OEM CPS. Do not buy junk CPS from eBay.