I have been working on my blazer for about a month's. I have replace several new parts.
FUEL PUMP This will be second one
PLUGS & WIRES
CAP
TROTTLE BODY SENSOR
O2 SENSOR BANK 1
Coolant temp sensor
EGR Value
fuel pressure regulator
We have check the fuel pressure it seems to be okay. We also hook it up to a computer it came up with a random misfire po300. The truck run at a idle really well. However, when you take it down the road t falls on its face. When you push to the floor it gets up and goes but runs real rough. We are losing fuel pressure. We replaced the fuel pressure regulator now it will not start. So we also replace the fuel pump again thinking that we got a bad one. It still will not start please Help.
Does anyone have a clue PLEASE.
