I have a 1995 Chevy Blazer and I have replaced a lot of ignition and fuel parts.
Replaced:
Fuel Filter, Air Filter, Dist.Cap, Rotors, Spark Plugs, Plug Wires, Vacuum Reservoir, Intake Plenum Gasket, EGR Gasket, Fuel Tank Cap, Fuel Injection Pressure Regulator, Vapor Canister Purge Valve Connector, Fuel Sending Unit Gasket, Fuel Pump, sending unit and Filter, Front & Rear EGR Valves... to name a few.

Here is the issue. When she is cold in the morning, she starts up first turn of the key with no gas, when I break for lunch, I have to hold the gas pedal to the floor and several cranks then she starts. If I make a few minute stop (like at a store) after she's warmed up and restart her, she starts right up again without the gas pedal.

So what makes her start right up after 8 hours in the garage, and minutes after she is turned off, but won't start right up after a few hours of sitting?

Any advice is appreciated.

 

Sounds like you may have a leak in your fuel injection system and you need the "clear flood" mode or equivalent to get the truck started by depressing the gas pedal to the floor.

What is the specific list of things that you have done to the fuel system?

If you had the plenum open was any area shiny and cleaner than the rest?

What do the plugs look like, any of them fouled?

Any codes?

What do your fuel trims look like?



George