I did reply to your post on the flame trap. Afterward I thought I'd suggest that you check for vacuum leaks . Spray water or carb cleaner around the intake manifold and throttle body and see if the idle speed changes. Also look at all of the vacuum hose for cracks where they connect at each end.

My 1984 244 does the EXACT same thing. Im slowly hunting it down. New FPR is going on when I finally get a wrench big enough for the nut holding it to the bracket. (22mm or so Im told). Its too dangerous to drive around my area with the car barely moving when cold so I have to let the barge have her 10+ minute warm up every night before the commute. Im also interested in where this check valve is...

Hi,


The air meter and flame trap likely have little to do with your problem.

If you want my opinion, you really should check the car for ANY fuel leak. Pull the trunk carpet and remove the access panel. Directly observe the connections below the access panel. Lift the vehicle and with a lamp visually inspect the fuel pump/filter area and steel lines after a long idle. Any fuel leak must be corrected.

Next, pull the vacuum hose off of the fuel pressure regulator and check for fuel leakage.

There is no other remedy but to replace the fuel pump check valve, fuel pressure regulator, and the fuel injectors in that order.

You can verify my hypothesizes by spraying starting fluid into the intake before a cold start. If the situation is eliminated, then the problem is fuel related.


Goatman

P.S. Once warm, no hesitation or stalling at speeds or stop lights. Totally normal if I can keep her going for the first 5 - 8 minutes.