If you have bad fuel in your blazer first you could drain all the gas out of the gas tank and then if you have a carburetor take it off and clean it up with carburetor cleaner and blow air through all the jets and if you wanted to really make sure you could take out your spark plugs and get a torch and burn all excess oil/fuel off sparkplugs then reinstall and then put good gasoling back in another thing you might want to either clean your fuel filter or replace it
No, but that's not a bad idea. It would make changing the fuel pump easier.
Probably the fuel pump is bad.
Bad sending unit in the fuel tank.
Probably a bad fuel pump. A common problem for GM.
Fuel pressure test.
out of gas
It is bad for fuel mileage.
Probably the fuel pump is bad.
If the blazer will start and run then shut off, leave off for about 5 to 10 min and if it will start back it's the fuel filter. The sediment is getting sucked up and killing the engine, then while its off the sediment is settling and allow fuel to flow shortly
Bad fuel sending unit in tank however it is part of the fuel pump assembly
The fuel cutoff switch, on your 1998 Chevrolet Blazer, can be found on top of the fuel injector pump. The fuel injector pump is on the back side of the engine near the top.
Probably a bad fuel pump, not uncommon.