I have an 89 RS with a 2.8L (fuel injected). I never had a problem with it until a week after I decided to sell it. Everytime I start it I have to keep giving it gas or else it just dies. My first instinct told me it was the fuel filter. After I changed the fuel filter it was apparent that the old one was all clogged up. So, I thought for sure I fixed it. I started it up again and it did the same thing as before. I drove it around the block thinking that I just needed to get fuel circulating, but it just kept dying. It started up everytime with no problem. It just won't idle.

Any suggestions would be greatly appreciated.

Thanks!