Changing fuel line on a 1995 S10 4X4 Extended cab

Changing the fuel line on a Buick Lesabre because of rust? usually means changing the fuel pressure line and the fuel return line and the fuel vent line and the brake lines.Touch one and the others fall apart/leak or leak right after.

CPI fuel injection under intake manifold Leaking Fuel Pressure Regulator

I had a Chev Corsica with V6. The fuel lines that ran straight fore and aft to/from fuel tank were metal. But where comes out of tank it was rubber. I'm assuming you've developed a pinhole leak in one of the metal fuel lines. I would suggest putting a "sleeve" of neoprene fuel line over the leak and clamp in place. This requires cutting the neoprene hose lengthwise so that you can slip it over the bad spot. Jut keep in mind that these fuel lines are under a bit of pressure.

You have to bleed the air out of the lines which bring fuel to the injectors. Usually this is done by placing a rag to soak up fuel under a fuel line joint (connection point), loosen the joint to allow air to escape until you see rule coming out, then tighten the joint to stop the leak once the line is full of fuel again. It may be easier to find the fuel return line and loosen it until you see fuel coming out. Have a fire extinguisher handy.

Possible fuel line leaking or check around the area of the carb for leaks. Check all line connections Check gas tank all over. I doesn't need much of a leak to smell. Some times leaks develope at the tank top where the fuel pump is located as well.Please don't use a match for light to check this out

Nothing wrong with fuel pressure should be fine. Pressure should not bleed off when vehicle not running that is probably why you have to crank for a while before it starts. I would check all fuel line connections from tank forward as you have a pressure "leak" somewhere along the line to loose fuel pressure.

check EGR or PVC valve operating correctly. fuel pressure or volume, replace fuel filter, possible air leak into manifold vacuum, check vacuum lines not leaking, incorrect spark advance

Not sure about your truck older Fords have 2 fuel pumps 1 in the tank & 1 under cab drivers side. Anytime you change a pump you must change your filter. also check your fuel line if it has been pinched or has a leak pressure will drop

Should be attached to the fuel rail. The fuel rail connects all of the fuel injectors. The regulator will have a vacuum line on it.

!70 and 171 are lean mixture codes, I'd start by changing the fuel filter. It's located under the truck, inside the frame rail, just about right under the drivers seat. The fuel lines are under pressure so you have to relieve the pressure before you disconnect the lines. You can let the vehicle sit for at least a 1/2 hour with the key off, or find the pressure test port on the fuel rail (on top of the engine) and bleed the pressure off there. You are going to need a special tool(s) to disconnect the lines. Helpfull hint push the line on to the filter while you insert the release tool(s), a little WD-40 or penetrating oil helps. Keep in mind your dealing with gasoline, keep your hot trouble light far away so there is no chance of gas splashing onto the hot bulb.