How long does it take to replace fuel pump in Chevy Blazer?

Complete disconnection and removal of the fuel tank is required. The average backyard mechanic can replace the fuel pump in a Chevrolet Blazer in about three hours. Disconnect the battery by turning the positive terminal counterclockwise. Drain the fuel tank with a siphon, or a vacuum pump. Let the engine run the tank dry, if possible.

How do you replace a fuel tank in a truck?

Maneuver the tank away from the truck so it can be worked on. Remove the fuel pump from the top of the tank by turning the three mount screws counterclockwise, then pull the pump straight out. Replace the pump with a new unit by sliding it back into the tank and tightening the three mount screws.

How do you remove a fuel pump from a truck?

Remove the fuel pump from the top of the tank by turning the three mount screws counterclockwise, then pull the pump straight out. Replace the pump with a new unit by sliding it back into the tank and tightening the three mount screws. Place the fuel tank back into the truck by working it into position with the floor jack.

How do you replace a fuel pump in a truck?

Replace the pump with a new unit by sliding it back into the tank and tightening the three mount screws. Place the fuel tank back into the truck by working it into position with the floor jack. Tighten the mount bolts and filler neck screws by turning them clockwise. Replace the protective shield and tighten the mount bolts.

How do you drain a fuel tank in a truck?

Drain the fuel tank with a siphon, or a vacuum pump. Let the engine run the tank dry, if possible. Lift the truck and place the frame rails onto jack stands by using the floor jack. Do not place the jack stands onto the suspension. Remove the wiring harness connections to the fuel pump by pulling the adapter plug from the pump’s electrical socket.

How do you remove a fuel pump harness?

Remove the wiring harness connections to the fuel pump by pulling the adapter plug from the pump’s electrical socket. Set the wires aside. Remove the fuel and vacuum lines from the pump by pinching their hose clamps and pulling them from the pump’s inlet nipples. They are sized for the particular nipple and do not need to be marked.

How do you run a fuel tank dry?

Let the engine run the tank dry, if possible. Lift the truck and place the frame rails onto jack stands by using the floor jack. Do not place the jack stands onto the suspension. Remove the wiring harness connections to the fuel pump by pulling the adapter plug from the pump’s electrical socket. Set the wires aside.

When to know if your fuel pump is failing?

Another reason fuel pumps fail is regularly keeping less than 1/4 of a tank of fuel in your car. If your vehicle is displaying any of the symptoms above, or you suspect your fuel pump may be having an issue, have the vehicle inspected by a professional technician to determine if the pump should be replaced.

What causes a fuel pump leak in a classic car?

Fuel System Leaks. Most mechanical fuel pumps have a weep hole on the bottom of the unit. When the internal diaphragm leaks, fuel escapes through the weep hole to notify the vehicle owner of a malfunction. This is one of the more common fuel pump problems found in classic cars that are between 30 and 60 years old.

Can a fuel pump be replaced in a blazer?

You can now replace the fuel pump and in tank filter (most call this a sock). If your fuel gauge sending unit is not working, then this is the time to replace that too. Reassemble the fuel pump into the tank and tap the locking ring back into place. Lift passenger’s side of tank and position filler tubes over frame

How do you remove a gas tank from a blazer?

Make sure all the lines, hoses, and connectors are disconnected. Now that the tank is out, clean off the top and blow off with compressed air or a brush. Gas Fumes Can Explode, so Be Cautious! You can remove the fuel pump from the tank by tapping the ring with with a screw driver and working it around until it’s loose.

Where is the fuel pump connector on a K5 Blazer?

Using a test light I was able to determine that power was coming out of the fuel pump relay (mounted to the firewall passenger side, grayish wire if I recall correctly) and making it all the way back to the connector at the fuel pump. This connector is located, at least on my truck, on the inside of the frame, driver’s side, over the rear axle.

What should I do if my fuel pump is not working?

You can now replace the fuel pump and in tank filter (most call this a sock). If your fuel gauge sending unit is not working, then this is the time to replace that too. Reassemble the fuel pump into the tank and tap the locking ring back into place. The hard part is getting the fuel lines threaded with one hand. This takes patience.