How to Replace a Fuel Pump in Your Car
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- Опубліковано 8 лют 2025
- Fuel pump replacement. How to replace a fuel pump in your car, DIY with Scotty Kilmer. How to test fuel pump. Bad fuel pump diagnosis, removal and repair. DIY car repair with Scotty Kilmer, an auto mechanic for the last 50 years.
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No
One thing to note for the do it your selfer... please use brass chisel or you can cause a fire. Metal on metal sparking on top of gas is probably a bad idea
These are some great videos vary fast pace and not boring
Once again, you have saved my life through a step-by-step tutorial and you didn't muck it up with any trimmings. Straightforward, to the point, intuitive and knowledgeable, and I honestly think you need to do a master class LOL. Thank you again, and cheers!
Dear Scotty, THANK YOU for another great mechanic training video. My great uncle Ferdinand Javier Venezuela the III once showed me how to drop the gas tank ...his fuel pump was much different though. It was inside several white bags that he just dropped in there. He asked me if I wanted these fuel pumps in my 81 slammed Lincoln Continental and I say to him "No Way Jose", my car is all original equipment!
yes, pressure test it first AFTER changing the fuel filter, could be a weak pump
@rogersvids Na, it could be tons of stuff. If the pump is wearing out, generally you will lose top end speed due to lack of pressure. cold starting stresses the entire fuel and ignition system, and minor glitches in anything can cause a first time longer crank. Scotty
@Compwhiz128 fuel filters keep crud out of the carb or fuel injectors. Most cars have the big fuel filters AFTER the fuel pump, and only a tiny screen before the pump. Scotty
@XxgunsxX1 Yes, but if you noticed, I didn't have to remove the fuel pressure line from the pump assembly as it stayed connected to the steel lines on the top of the tank cover. In thise case, the lines had enough flex to leave em on during the process. Scotty
@dangerline95 they just bolt or snap off with special tools if they have internal clips. BUT, most modern cars have em inside the gas tank, requiring removal of the tank, so they rarely get changed.
@bumpyfruck yea, but I've never had one blow up on me yet, as I work outside with a big fan, and the vapors don't collect to blow up. If you work inside, yes.
@Ed3891 no, they are different. Depressurizing it removes the pressure on the high side line that goes to the engine. But really, I never bother, it just squirts a little gas out then
thanks scotty! even better that i have found with our ford is that the ring is accessable from the boot under the carpet covered by a metal plate glued and sealed by screws.. so thank god dont have to lower the tank at all.. you have helped so much. so a HUGE thanks from Australia
Great video & Mustang! I wonder when Ford started putting the 5.0L back in it? Another tip I was told to tell if your fuel pump is bad is to take the gas cap off, put the key to run, then put your ear in the gas filler line. Also I heard that b/c of recent high gas prices more people are running out of gas & that's what causes the fuel pump to fail b/c gas acts like a lube for the pump.
@nismo2ful basically, yes. But some have access holes you can get the pump out from inside the car through that opening when you take the cover off
@suburbanator91 this is about tank dropping fuel tanks, which unfortunately most American cars are. Yes, many foreign cars have access panels. Always check before doing all that work. Scotty
it could be the security system, that shuts off the fuel injection from working. Have a guy like me analyze that first, it requires a dealer level scan tool to figure that one out
You don't always have to take the fuel tank off. Sometimes there is a cover under the back seat, and you can pull it out and replace it that way. Much easier.
@Compwhiz128 You can't have a mechanical pump under the seat, it would have to be an electronic one, mechanical ones run off the engine. Do not run on empty though , it runs crud through the system and clogs up the carb. Scotty
For everyone out there, don't matter my mistake. Be sure the connect the ground wire bc I had pump go bad in freezing weather. In top of which I was traveling to diff state. So I did all the work in AutoZone parking lot laying in the snow and freezing weather. So before putting truck bed back on and reinstalling of course I'd test it. But didn't work and I went thru about 4 new, including having to rewire. It was super bowl Sunday and I was late. Finally a guy passing by asked me if I had the ground connected. Nope. Totally didn't realize I needed it connected. I thought it was for electrical surge protector. Started right up. Just a simple wire coming from an area I didn't think important caused me so much grief. So don't forget about it.
If u need a new fuel pump,it's not your lucky day at all
or starter.
I think you can fix the broken one
Fuel pump has been going out since before I bought my car..still haven’t changed it but I’ve got the pump. Plan to change it tomorrow between shifts at work
Diego De Leon Gaitan
Yeah, just not the most viable option tho lol
not bad when you have easy access- i cut a hole under my spare tire well- then you can buy a $10 one
yep
@amirr007 tons of things can do that, start by checking the fuel pump pressure and if it's low replace the pump. Pray it's that simple, the rest is VERY complex to analyze.
@TonyInTopeka the old pump wires should have gone to a pump with a plus and a minus on it, for positive and negative. Route the wires the same way on your new pump. If your pump has no plus or minus, get one that does, they have to be marked.
@ALEX62592 ,No, I live in Texas, I just visited New Hampshire. Nice place in the summer. Scotty
fuck i love how enthusiastic this guy is
@xMarinex93 generally not, a bad pump will burn out quick and never start again. often dirty injectors, try my video "how to clean fuel injectors in your car" and have that done. Scotty
only way to correctly analyze it is to hook up a high level scan computer, run it, and when it shuts off, the computer makes a data movie which is then analyzed. The ONLY way, so do that and don't guess, all good mechanics have that equipment
Scotty I love your vids you've helped me a great deal. I just did a fuel pump on a 95 Chevy Blazer...didnt seem to hard but the feed line twisted n broke so had to buy whole new fuel sending assembly. I never went to school for mechanic but I've had some experience and some jobs thanks to you I know most repairs can be done thanks for the vids!!
@623bullet of course check for leaks anywhere, but I doubt you used that kind of fuel in that short period of time unless its flying out a leak. I would assume an incorrect gas gauge sender myself. Scotty
@ts46176 I work outside with a giant fan blowing fumes away from me. So I've never had any problems with fire. IF you work inside, yes, definitely use a brass punch to stop possible sparks. Scotty
yes, it can be a hassle getting them off. sometimes you have to just cut the hose and put a new one on, but try forcing it off with thing screwdrivers as pushers
I had my cars tank changed cause it had to much rust on it. THE IDIOTS at the shop used LIQUID Gaskets so my fuel pump got CLOGGED and my car stopped.... a 1 hour trip took me 10 hours car stopped and goes for 5 mins..... This was the first time i went to a mechanic to have something fixed on my car, and it will be the last time... from now on i watch Scotty's movies and do things myself! THX Scotty!
I'll leave this to the mechanic. This way beyond my limit. But good video
many things can cause poor running, but since it at least started, run it a couple days, sometimes they clear out that way.
I remember seeing an old post somewhere on a way you could take out the rear seat , and cut an access hole in the metal under the seat so that you can access the pump from above on that generation of Sable and Taurus.
same as a new electronic one, hook a gauge up to it when on the vehicle and crank it. Should put out 2 to 3 psi
@N4ANE you get a data system and look em up. Most american cars have no access panel for example.
awesome video i really learned a lot.
my car recently broke down and i believe the fuel pump might be the problem. i want to do it myself instead of having someone do it but i do not have the necessary tools to do it
@scottykilmer I refuse believing youve been laying on your back working as a mechanic for 43 years, if so, you´re a gifted man :)
yes, replace the fuel pump. But if you want to test the fuel pump voltage you would have to get test wires connected close to the pump and measure it there
@MrMrtiki tis true , tis true. Don't crank a car that say E on the gas gauge, cause that'll burn the pump out. Scotty
@fl0r1svdk yes, most pump kits come with a filter in the box.
all vehicles use different factory pressures, you have to look that up individually. If it's an automatic tensioner that self adjusts, it would need replacing
You including the sound of the engine trying to start helped so much seeing how that is exactly how my car sounds!! Going to attempt to fix it soon, I have a 1999 nissan sentra and they tell me that I can access the fuel pump through a panel under the back seat, Does that sound right??
they often last a LONG time, but if it's soft and ballooned out, auto parts stores sell fuel line hose
@IndigoBipolarGemini Yea, those oldsters are getting hard to get. Realize you can remove codes just by disconnecting a battery cable for one minute. and you can access those codes using a paper clip and watching the check engine light flashes. Get a cheap manual with directions for that, all auto parts stores or amazon can sell you that. Scotty
realize only oem factory fuel pumps last very long in those things. BUT, also check the wiring, it could be going bad to the pump or the fuel pump relay could be bad.
@lilwabbit109 No, there is no access panel to do that.
yes, a torch would tend to blow things up. But I can't believe air tools won't get it off, my earthquake air gun always worked on any I had to get off. Try a long cheater bar, socket, and extension and pray. Push comes to shove, cut it off with a hacksaw and get a replacement part to put it back on with using fuel injection hoses and clamps to reinstall that.
tons of things can do that, including a clogged fuel filter or weak fuel pump. Check those first.
If it's a rubber Fuel line, made for gas, Many years. If you like my car help, be sure to watch my live car talk show every saturday morning at 10 AM CST on google events. I answer your car questions LIVE there. Just go to my scotty kilmer channel on youtube saturday morning at 10, and click on the google plus icon on the top right corner. That takes you to the event. You do have to be a member of google plus to ask questions, so join up, it’s all Free.
@BellefontePerson na, they are WAAY too complex. I would just wire the pump off the ignition switch with new wiring and a fuse myself. Scotty
@zxdr2 only if it's ruined. This one was only a year old so I used it over. Scotty
you hook up a pressure gauge to the line going to the carb. It should be around 3 psi
make sure ALL the brake bulbs are coming on at back. If so, the brake warning system has broken down, it works by ground fault interrupter circuitry wihch often breaks down on a Honda that old. You can remove the dash and take the bulb out if it bothers you
Love Scotty kilmer he gets straight to the point
yes
replace the fuel pressure regulator, if that's not it, then one or more injectors are leaking and need replacing if you can see no external leaks
there are similar relays on the car, just swap one. They dont' go bad very often on nissans though.
The only thing you forgot to mention is that you should peel back the carpeting in the trunk &/ or pull the back seat out as that is where it it can be as well. The Toyota Corolla is the best example of the pump being under the back seat, as well as the Subaru's. The GM W, H, & K platforms are cars where it would be under a panel in the trunk floor; they do that cause the rear sub frame goes under the tank and would require dropping the rear sub frame 1st to drop the fuel tank.
knocking is often an engine breaking down inside. So do my video test "how to check your engine's compression" and see if any or all cylinder are low, meaning the engine is Kaput
Great video scotty, but for me a little late unfortunately; The pump gave out about a month ago on my 1991 BMW 318is but the clever guys at BMW made it easier, a bolted panel under the seat with access to the pump, no need to jack her up or drop the tank.
Still battling with the ALFA ROMEO by the way!!
Big wave from Spain!!
Too old for my data system, it stops at 81. I don't remember, but if it has a carburetor on it, odds are it has a mechanical one on the engine side running off the cam.
@saebbi No, only wimps use hoists. Cavemen like me use jacks. Scotty
Scotty your a God sent, every time I need to figure out how to fix my 💩box your here with the know how.
It could be, but I'd test it first. You could always make your own adaptor using hardware store fittings to test it.
@tuqui1502 Not on an old carb engine, it will mess with a fuel injected one, but not yours. Scotty
like i was saying, before i installed the new mass sensor, the car wasnt able to stop and go. I put the new oem maf in and it helped alot. Only when i open the throttle, will she boggle. other than that, the celica drive amazingly well?
I hate it when they make it so that you have to pull the gas tank off to access the pump, yet another case of brilliant engineering!
thanks she is up and going. You don't know but this is the second r.v. of ours you have helped to get on the road. your the best.
I did this once on my '95 F150. It has two tanks, which was nice since we could still drive home, but bad because gas from the rear tank found it's way in the front tank, causing it to spill out the filler cap (which changed it from "I'll get around to it eventually" to "this needs to get done NOW!")
The fuelpump is almoste often in the tank but removal often being done under the seat. you dont have to remove the tank, but sure some cars you have to remove :). thanks scotty
i just changed mine all by myself 98 firebird , success just like scotty :))))
@mike797 some do, some don't. For example, my 94 celica does, but my wife's 92 cressida does not,. Scotty
Love old Scotty videos
Tanks for the video. I got really lucky when i found i could access the pump from inside the car in the floor. :)
i have this 82 ford that had an AWESOME 351w in it. pretty damn fast. what a hog. i did away with the in tank pump. cuz thats a pain, and got an old carter to bolt to a frame rail. that went after about 7 years, so i bought a Holley Blue Electric pump. i will have no fuel delivery issues ever, and i still pull 11 seconds. :)
@Stevennickel didn't have to . This tank was low, but had 5 gallons left in it. Notice I didn't empty it out. Scotyt
some diesels have intank helper pumps, but some don't even use pumps, the injector diesel pump sucks the fuel in
try cleaning the carbon out, they really messed up the engine design on that so the intake valves carbon up big time, use fuel injector cleaner often when driving to prevent it in the future
I only use dealer oem pumps on all cars now cause the aftermarket ones are too iffy. I would never swap model pumps.
@msw600 Anything can give off a smell when it leaks and hits a hot engine part, so check em all. scotty
hi scotty i love your programs.the indian cars are different from the american cars.the so2, the fuel injector and spark starters are places differently.
scotty I just replaced a bad fuel pump on a honda. it appears that the main relay in it was also bad but while testing it I used a power probe to the wires after it to confirm my new fuel pump works. However I was wondering if I could've damaged any components if I put power through the wrong wires.
i.m from spain and i love your tips mister scotty
sending unit works the fuel gauge, pump pushes fuel into the system. if the gauge is not working, replace the sending unit
if you can find one for that old thing. Parts aren't easy to come by
realize aftermarket ones often stink, but you can get OEM ones from places other than dealerships
generally shot carburetor on the right side then
@STeeLo205 you pobably bent the floating gas gauge sending unit arm, happens all the time. Scotty
This job is really easy on E36 3 series BMW. You just pop out the back seat cushion and remove a cover then its right under that in the tank.
Dude is so rad and knowledgeable
I'm so glad you're working on a Mercury lol i need to change the pump on my escort so it helps to see a similar model.
to some extent but best to pressure test it with a gauge at it must be just the right amount of pressure for that model car.
would you please be able to do a video on can-bus wiring systems as most newer vehicles are using this system. the issue being that fault codes can no longer be an affirmative to the actual fault on the vehicle as the ecu systems are interlinked.
Thanks Scotty, you did it again, you're a great guy.
Live Free Or Die! haha love that. Thanx for making this video! helped me out alot.
i just replaced a fuel pump in my 2002 s10 blazer. I heard your supposed to change the fuel filter with it, but i got a little dirt and metal in my gas tank while changing the pump. should i replace the filter now or run a tank or two of gas through the old filter so i dont clog up my new one right away?
@623bullet you should never hear the pump runing in a Honda, so replace it now, and the filter. Scotty