I have a 1990 chevy blazer and when i first start it up it runs great, but after about ten minutes of running the engine will start to bog and miss when i give it some throttle. It will continue to run like sh*t until it will finally stall on me. I had just replaced the plugs not too long ago also. I feel like this has to do with the fuel filter and/or lines but id like to get a second opinion, Thanks!

 

K5 Blazer or S10 Blazer?
What engine?

 

It is a K5 with a 350