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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.
The below will only be relevant if the engine ran properly before you changed the fuel line, so making an assumption on that. Not sure what you mean by "won't start fully". After replacing a fuel line, it could take a while for all the air to be purged from the fuel line. If this means the engine will fire, but stumbles and misses, and you are sure you have purged all the air from the fuel line, then you may have introduced contamination into the fuel system when you changed the fuel lines. If there is a fuel filter downstream of where you replaced the fuel lines, try replacing the fuel filter. If there is no filter downstream of the replaced fuel line, then the fuel injector could have caught the contamination. That scenario will be very time consuming to fix...R&R fuel injectors.
Could be the fuel. But check to make sure that the fuel line is not restricted. Hook up a fuel gauge to see what pressure you have. Check to see what the fuel looks like.
Should not change all the fuel line .Cut the bad line fuel and Measure the required distance . and take with you the bad line fuel to Advance Auto Parts . and ask him for new line and fuel filter and Link to connect the line fuel together , make sure no leak . good luck .
There is no inlet fuel line,unless you're talking about a fuel line return from the pressure regulator? Or are you talking about the big hose between the fill cap and the tank? If you're talking about a bad fuel line,is it plastic or steel? don-ohio
The fuel filter is in the fuel tank. Before removing make a sketch of where the fuel lines connect to. Empty the tank and use a flash light and look inside the fuel tank to see which line has the filter on it. There's a retainer on the fuel line up against the fuel tank on the outside. Use a small screwdriver to remove this retainer. It looks like a washer. Remove the fuel line from the carburetor and using needle nose pliers pull on the old filter and remove it from the filler hold with the fuel line still connected. You should use a new fuel line the same diameter as the old one. From the outside feed the fuel line through the hole. It will be tight. Push it through until you can get a hold of it through the filler hold. Put the filter on then pull the fuel line back. Pull until the filter is up against the fuel tank. Put the retainer on the line and while pulling the fuel line tight press the retainer up against the tank. Attach the end of the fuel line back on the carb.
There are 2 fuel lines connecting to the fuel injector rail. The larger line is the pressure line and the smaller line is the return line. The smaller line attaches to the fuel pressure regulator. You will notice that the regulator also has a vacuum line attached to it. If you are planning on changing it your self, let me know. There is a specific way to change it for safety reasons.
Let me know.
Regards,
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