Removing fuel pump 1986 cadillac - 1986 Cadillac Eldorado

have you looked up the codes? sounds like a clogged filter or bad fuel pump. Either way, have the check engine light looked at.

most likely (in the order):
Fuel pump Fuel filter Dirty injectors
To check the fuel pump just put a fuel pressure gauge in the sytem and check the pressure when the pump primes, should be around 40-6- psi. This can be caused by both the pump and filter but most likely the pump unless the filter is VERY dirty and has never been changed (has it?)
if the pressure is good the injectors can be removed and taken some place where they clean and measure them.

Fuel pump is located inside the fuel tank...

Fig. 2: The fuel pump and fuel gauge sender assembly (click image for zoom)

The fuel pump locking ring can also be removed using a brass drift.

Hope this helps (remember to rate this answer).

Hello, The fuel pump is inside the gas tank. Remove the exhaust, Disconnect and remove all hoses and lines, also disconnect all electrical wires, remove 4 bolts from straps holding tank. Drop tank down. Remove lines and hoses from top of fuel pump module, remove lock ring, pull fuel pump module, turn unit as necessary so you don't destroy the fuel level sender. Hope this helps

Have you tested out the fuel pump? check for plugged fuel filter?
plugged fuel lines to the fuel rail, injection pulse at the injectors? power to the fuel pump relay? grounds needed to make certain systems work must check those also. get a wiring diagram of the fuel supply system and back trace all the wiring and see if you have power and ground and signal.

It should be either no Spark or no Fuel.
Possible causes: Out of gas, no oil pressure, faulty oil pressure switch, Bad fuel-pump, fuel-pump relay, needs tune-up, defective ignition control module, wrong air/fuel ratio, defective IAC valve or EGR valve.
Other causes: Wrong timing, bad compression, or clogged CAT.

you have to drop the fuel tank the pump is on the top...remove the hoses and theres a lock ring on the pump that has to be turned to release the pump from the tank they use a specal tool for this but you can use a screw diver and hammer to tap it around to free it

fuel pump is in fuel tank remove tand and take pump out of top of tank were hoses and fuelguage sensor hooks up

That fuel pump is rubber isolated from rear frame rail,,,you can remove pump,,,get to the ground wire, and put your own wire onto ground.

remove power steering pump for access if needed and remove fuel lines and return line remove two bolts holding pump and replace w/ new gasket.