any tips on replacing my fuel pump?

[DissFigured]

I got a new fuel pump today (cheap mechanical one for $18 at OReilys)

Shop manual shows installation and removal but I want to know if I need to prepare in any way. When I unhook the hoses, is gas going to go everywhere?

Is this tricky in any way or is it pretty straight forward?

Looks like a simple process but as I have learned in the past, a lot of these things that are simple in the manual come with some "Gotchas" that aren't mentioned.

 

[enferno]

it only goes in one way. the pump lever won't hit on anything when you stick it on, so there is no guesswork.

i'd put a rag or two in your other hand when you take off the old lines, as there will be a little seepage.

sometimes it's easier to take off/put on the bolt closest to the block if you have the oil pressure sending unit off. every car is different though . . i've been able to get at it from the top using a wrench, or from beneath the PS pump using a ratchet with a wobble head.


if a gasket wasn't included, i would pick one up. i would also use a little bit on RTB/silicone on both sides of the gasket to ensure no oil leaks!

 

[D.Hearne]

Yea, there is one snag. Just make sure the pump lever fits under the fuel pump eccentric. Believe it or not, it can be installed with it above the eccentric. Stick it in with the lever pointing down, then tilt it up just as you get it all the way in place. You will feel the lever contacting the eccentric this way. You will spill fuel from both hoses when removing them. You can plug the inlet hose with a 3/8' bolt while you get the old pump off and the new one in place.

 

[DissFigured]

So, I replaced the fuel pump, and I cannot get the car to start.

My understanding is that it is possible to get it installed incorrectly with that bar under rather than over or whatever.

Question: Is it safe to assume that it is installed correctly if I can see the fuel jets spraying fuel into the carb when I press the accelerator?

Any ideas why it might not be lighting up?

 

[D.Hearne]

Disconnect the fuel line from the carb and with the coil wire disconnected roll the engine over a few times with the starter and see if you have fuel pumping from the pump to the carb. If the pump lever is under the eccentric, it will not pump fuel. Also pressurize the fuel line back(from the pump end) to the tank to be certain it's clear. And yes, if you have fuel in the carb, you can see fuel shoot into the barrels when the throttle is worked. This fuel will be coming from the accellerator pump

 

[DissFigured]

Damn, I just don't get it.


Car ran fine before.
All I did was change the fuel pump.

I just disconnected the fuel line at the carb and turned the engine over. A fountain of gas shot out of that line so I assume it is pumping correctly. When I pull the throttle linkage, the pipes shoot gas into the carb so that seems to be working as well but it won't light up.

Only other thing was that the battery died completely while I was replacing the fuel pump so I had to recharge the battery. Could that have somehow killed the starter coil or something. I am reaching here but I am running out of ideas.

 

[D.Hearne]

I just reread my previous post and had my wires crossed. If the pump arm is under the eccentric, it's correct and should pump fuel. If the arm is on top of the eccentric, it will not pump.

 

[D.Hearne]

Pull a couple of spark plugs and see if they're not fouled from too much fuel. After recharging the battery, verify you've got spark.

 

[mrmustangman357]

dead batttery? DOES IT CRANK OVER? Or does it crank and not fire? If so, it may be flooded or no spark. You can prop the throttle open and let it sit for a couple hours, then try to restart it without pumping the gas. you can slo shoot a touch of starter fluid into it and see if it will fire and burn off excess gasoline. Sounds like you just made another problem if it gets fuel and doesn't fire

 

[krash kendall]

I think you flooded it Diss.

 

[BullittStangV8]

Pull the plugs and let it evap out. Then give it another go? Are all your plugs on and tight?

 

[DissFigured]

I also should note here that I am trying to start the mustang while being jumped by another car. I don;t have a battery charger at the moment. I was hoping to jump it and let it charge by driving.

I will check the plugs for a spark this evening.
currently 104 degrees outside. I will wait until it cools.

 

[mississauga5.0]

old member.. new update

hey diss, did you end of resolving the fuel pump issue?

i know this thread is old, but i have not been around. any tips from one novice to another? my fuel pump buzzess while i drive so id like to replace myself

cheers

 

[mrmustangman357]

lol way to bring it back from the dead