i have a 1991 gmc safair van v6 it was running fine till a couple of days ago when i went to start it it did not start it seem like it was not getting feul to the carb so i waited till the next day and it started so my problem is some days it will start each time i turn the key but let it sit for a couple hours and it will not start so i put starter fluid in it and it start last year i put on a fuel pump and filter and a margerlater a coil pack, so what do you think it is
Optional Information:
1991
GMC safair v6
Already Tried:
fuel pump/coil pack/margerlater/filter