Start by checking the fuel tank vent for a blockage.There will be a line that runs paralell to the fuel tank inlet tube or hose.If it's not golgged or kinked then pull the fuel tank and check for blockage in the tank inlet.you might also try taking the fuel cap off and pushing a small hose down into the inlet all the way in to the tank. try this first...
You can only tell if the El Camino is a Royal Knight by the build sheet, the VIN number will not tell you. If you do not have the build sheet then there is no other way in telling. I have one and it is the only way I could tell if mine is a true Royal Knight.
You need to talk to a bodyshop that does customizing work on that one.
maby in a 1970-72 but you would have to build a special box behind the seats
Pressure by the hydraulic pump is made​​.
Pressure build up due to restricted orifice.
pressure can sometimes build when we are waiting on another person in order to met our own deadline.when has someone let you down and caused you to miss a deadline?what did you do?
Build.
Sometimes when the gas cap goes bad it will cause pressure in the tank,also you need a little bit of pressure in the tank,or the car wont run correctly,like if you leave the gas cap off after filling up with gas.
sometimes
pressure
Which pressure. - More info gets a better answer.
The only 2 ways I no of is 1. From Chevrolet or 2. (in my case) hope to find a build sheet in the car. If you do eather the Royal Knight build code is Z16 = Royal Knight DEC = AL & STRIP A95 = 3-Tone color of the decal package mine is Red Hope this helps