90 Suburban 350cid, w/TBI, TH400. Here are the symptoms: Check eng. light NOT on (it does work); Once running it runs fine (slight miss that has been there for a year before this problem started); starts fine the first time in the morning (so far); drive it for a short time and shut it off, try to restart it and it just cranks over, if I cycle the ignition ten times it will start. I have tried to cycle the key seven, eight, nine times and sometimes it will start but ten seems to be the magic # that works every time. I am at my wits end and need help. The fuel pump does run when I turn the ign. to the run possition (every time). I did replace the fuel pump already (new A/C Delco pump), there are no leaks in the lines that I can see, when it will not start there is no fuel coming out of the injectors. I have checked the injector plugs for change in voltage while cranking and there is a change but I would rather check for injector pulse using a node light but I don't have access to one. HELP!