I have a 99 Chevy Blazer that starts and idles for hours in my drive but if you start to drive it will only run a half a block then dies, after that it takes about 20 min before it will start again. Once started again it will stay running as long as you don't drive it. Any suggestions would be appreciated!

 

When was the last time you changed the fuel filter? Fuel demands are higher when the motor is doing real work and not just idling in the driveway.

 

I had someone check my fuel filter and they said it was ok? But not sure how long it's been ince one was changed.

 

Wonder how they checked it... You can't tell a fuel filter is good by looking at it.

 

Well someone told me to try Heet and I did and it drove for about 30 min or so then started to cut out it died twice but started right back up and I was able to drive it home. So it's better than it was before. I am at least able to drive it a little now.

 

Heet removes moisture from the fuel system. If that helped, the gas has some water in it which doesn't work so well as a fuel. I would still recommend replacing the fuel filter. It's a cheap part that plays a pretty integral role in the operation of your vehicle.