Hi all. New to the site. I have a 92 with a 318 efi. I've had for many years. Never left me stranded. But recently its been giving me a little bit of a fit. sometimes when i started it up (cold or hot) it will stall when put in gear. I will have to start it up again and bring the RPM's up and clear what seems to be dark grey to brown smoke out and then it will run perfectly. Now mind you this only happens now and again. i've replaced the injectors, fuel pressure reg., and filters. Any help would be greatly appreciated.