One is a vent line And the other goes to the purge canaster. i only have two lines coming off my fuel tank on an olds delta 88 1993 do both have fuel filters
If the fuel pump relay goes bad your fuel pump will not get power and you will get no fuel. If your fuel pressure is showing too low your pump is either weak and needs to be replaced, your fuel lines are restricted somewhere ( or possibly leaking ) or your fuel filter needs to be replaced.
It is unnecessary to bleed the lines after installing a new fuel pump. The fuel pump will pump all the air out of the fuel lines and start to work properly without any bleeding. Just install a new fuel pump and start the engine.
The larger diameter neck out of the fuel pump is the pressure output and goes to the line that goes to the fuel filter. The other one is the low pressure return line, which is fuel returning to the fuel tank from the fuel injector rail. This question is making wonder, because the quick connect fittings on the end of the lines, are different sizes, and can't be crossed up. I am sincerely hoping that the OEM lines are still present, and we are not trying to clamp bulk rubber lines onto the system. Because clamping rubber lines in place of the OEM lines, is asking for a serious explosion.
Follow the fuel lines from the fuel pump toward the engine. You will find the filter.Follow the fuel lines from the fuel pump toward the engine. You will find the filter.
ports
Follow the fuel lines from the front to the fuel tank. The fuel pump is connected to the tank. You'll have to remove the tank to remove the pump. Follow the fuel lines from the front to the fuel tank. The fuel pump is connected to the tank. You'll have to remove the tank to remove the pump.
well... one end connects to the end of the strainer/pickup at the bottom of the fuel tank and the other end goes through the body to the fuel pump.
The larger of the three is the fuel feed, the other two are for fuel return and evap. vent.
check if the fuel pump ground is connected
There are 2 fuel lines that need to be removed from the pump and 2 bolts. When putting it back on make sure the arm goes under the lobe, you will have to apply a little pressure to the pump to install it.
Mounted on the side of the engine if it has one. Follow the fuel line as it goes to the pump. If the fuel line goes to the carburetor then it does not have a pump and is gravity fed.
take the fuel lines off of the pump and unbolt the 2 bolts that hold it on and pull it off, when installing you need to get some wheel bearing grease on your finger and push the rod up inside the fuel pump cavidy so it will stay up long enough for you to put the new pump in place and get the 2 bolts started and tightened down and re-hook all the fuel lines and your good to go.There is no fuel pump rod on a Pontiac motor. Just an eccentric on the cam. While installing the fuel pump tilt the top of the fuel pump towards the engine just to make sure the fuel pump arm goes under this eccentric. Reinstall the bolts and lines. That's it.