I have 1987 2.8 TBI 2wd Auto AC 2 door Blazer with about 80K miles which has been in the family since it came off the lot. Which up to now, it has been running flawlessly. It is only used occasionally. Here is my problem, the vehicle fails to stay on. It will crank over, start for about a second or so and then quits. When I turn on the ignition switch, I can hear the fuel pump run for about 2 seconds and I can also see the injector nozzles spraying during that time. The car will stay on if I pour fuel through TBI and will sputter until I stop pouring. I have gone through the Chilton's manual, which has not helped, through the internet and this forum but I have not been able to find a solution. I noticed though that there seems to be different layout between models. For example, I have been trying to find the pigtail which leads from a relay that makes the fuel pump run. I have not been able to find it as mentioned in my searches. My model has 3 relays on the left fender between the reservoirs which I'm guessing one is for the fuel pump. 2 or the 3 relays have the same number(6216) and the other is 6209. I am stuck and I hope that someone can help me. I can provide pics if necessary. Any possible suggestions? Thanks in advance.