How to Tell if BAD FUEL PUMP with NO TOOLS 

heres the issue with the fuel pump i have in a 2014 vq q40. when positive clamp is connected to positive terminal, the second i touch the negative clamp to terminal, u straight hear the fuel pump engaging keep in mind car isnt even in ignition. now with that being said, when the clamp is tightened/sitting on the battery, it wont engage the fuel pump, what can be the issue?

Bro my fuel pump primes too long and car won't start but Aston as I spray starting fluid in throttle is fires up but thn dies could that be bad fuel pump but i xan hear fuel pump turning on

@@jvst20051 it could be a relay or if not that, check your fuel lines

@@ryerci9618 w3

@@mackone3 ?

Wow sounds like my g coupe I got 2 months ago with the exact same thing(needs a clutch)haven’t done it yet as I’m going thru my first stick g35 and everything pointing to exedy and stage 3 in case I want to make it a turbo later…I’m so happy as I just did the spark plugs (ngk ix)and Castrol fully synthetic aka Nissan food for the g

Correct, if you have G coupe, the lights fit perfectly from other years without any modifications. 06-07 are the best headlights.

He didn't say compression.

He missed compression and timing

joy walker Or weak witch is bad as well

@@ryans413 Accurate, I have a weak pump in my 370Z atm. It still makes the noise but Fuel pressure is too low, resulting in misfires and stalls especially when HOT.

@@SLASHRIPP *EDITED* *FIXED!* you sir are a genius I threw in the new fuel pump and BOOM! fuel pressure restored! And when my car is warm it no longer dies on me! So the long cranks were cam position sensors. That's fixed. I installed a z1 fuel pressure gauge and what do you know? With the car primed key on position the gauge jumped up and back down to zero. Then when i turned on the car it jumped up to 40 psi. I have ordered a Z1 Walbro 255 fuel pump kit and will come back and update this comment after installing to see if my fuel pressure is restored.

@@SLASHRIPP I think you just fixed my g37

I have seen several "working " fuel pumps fail compression test ✌️

Yeah, the CD's players giving the ERRRRRR message is very common, then it will go back to working again out of nowhere.

Yeah, true blowing a fuse would not be getting lucky. You are right, it means it would blow again and just replacing the fuse would not fix the issue.

Motordyne G35 i hear the buzzing niose all the time while on idle(park) is that Normal on my 2007 g35 auto

Marco Antonio same did you find the problem

Could that be any fuse? Or just the fuse pump fuse

a failing fuel pump will not cause a fuse to blow

I've never had that happen to me, but good to know. Thank you!

I have same issue it takes forever to start, it gave me a p01001 code aswell but it dosent come back right away it also has thrown random multiple misfires

@@josequiroz4605thoroughly inspect your fuel pump for the crack/s that I mentioned in my last post if its ok then you may have ignition related problems. Dont wait too long, I had to have my flywheel replaced because of having that problem for too long before I found the cause.

Dirty fuel tank picking up dirt and clogging up the pick up, then you wait a bit and you can turn it on like nothing happened.

What were the symptoms you had ?

arturo 900 I had a rough idle, and no Check Engine Light. The issue has not been resolved, but now I know it's not the fuel pump, so I don't have to throw any money at that.

The issue has not been resolved? Did you try my idle relearn video.........ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-TZJfWQLGUZI.html

Motordyne G35 Not yet. I'll give it a shot, but I'm mot very optimistic. I really don't want to take it to a mechanic because I've had nothing but bad experiences with mechanic shops in this area.

uh...you should be very OPTIMISTIC! If you have not done an idle relearn yet, that is your problem! Trust me, that will fix it!

www.ebay.com/itm/VMS-ALUMINUM-OIL-RESERVOIR-CATCH-CAN-TANK-WITH-BREATHER-FILTER-BAFFLED-GUN-METAL/290810487021?epid=1990079776&hash=item43b5a7e0ed:g:WKcAAOxybqpRhfQs&vxp=mtr

PCV delete part here - www.projectimport.com/store/vq35de-and-revup-nissan-infiniti-pcv-valve-port-to-8-an-fitting/

You are my online mechanic. I’m in college & I watch ALL your videos. Thanks

And timing

and ur mom

& deez 🥜

Brian Nelson ....I agree, for me it has become a habit before starting the car to prime the pump.

Motordyne G35 just got my 6months ago. So its fun flushing all of the fluids and changing everything out... Only have 86k on it. Original everything (scary) my next bit I'd clutch and flywheel. Then I can look into getting the engine mods and exhaust.

Congrats on getting a G! My OEM fuel pump made it to 150,000 miles before I changed it, the pump did not fail, but I was tired of waiting. Yeah clutch is good for about 80k to 100k, depending on usage. My first clutch went out at 60k, but I was really hard on it. You will have plenty of life left in your G, another 10 years for sure with that low of mileage. I"m up to 173k now.

Motordyne G35 my issue is the dual mass flywheer. It's work out the clutch itself is amazingly strong still for the miles.

How to prime it?? Im adding a new fuel pump next week when it comes in..brand new starter but now the fuel pump went

BrokeBoiJD I’ve been having the same problem, even after cleaning the sensors in the fuel pump. I have no clue what the problem is.

@@gentrysmith7547 did u solve the problem?? I chance 2 fuel pumps already and check cluster and nothing.. went with a guy to fix my cluster but its worse now.. now even how much i have now

@@nazaiturbide9351 Who's the person that fixed your cluster? The person on ebay?

Most likely weak battery. Your battery is starting to die....

Any codes? Your issue could be many things. Spark plugs, coil, fuel pump, IPDM, high temp, etc. Check live temps with a scanner. 1.) Stock G35 can run hot and it will bog down when it overheats because the computer will limit performance to keep engine cool. This could be a fan or coolant issues (leak or water pump). 2.) fuel pump can engage, but that isn't the whole story. If there isn't enough pressure, then you will starve the engine of fuel.

It's behind the battery. Yes, the IPDM can be responsible for no start ups because the IPDM is the largest box for all fuses and relays. However, usually you will get electrical issues along with an IPDM problem. Example: Infiniti qx56, Armada and Titans have the notoriously bad IPDM (white box). People have been stranded because of the IPDM. The new version, the black box, fixes starting issues and other electrical issues.

Did you ever fix this?

Jeysson Morales amazon or rockauto.com autozone mine was $240 and on Amazon and rockauto it was 40 lol

@@seanwatts392 Not true. You're comparing the whole assembly vs the fuel pump only. Brick stores will always be more expensive because of overhead. Roughly double than rockauto $70-$80 for the fuel pump at a parts store.

Try to get a OEM pump the after market ones are crap AC Delco or Dorman pumps are okay stick to those

Just one. It's priming the lines. Your fuel pump isn't dead, but it might not be fully operational

@@kyleberndt8315 cool. im currently cleaning my throttle body and MAF sensor. Ill go start browsing online car parts shops after well if i fail with an idle relearn soon. thanks.

Jose Vela ....how many miles on the car?

Motordyne G35 it has 107000

Well, ignition coilpacks are good for about 80k to maybe 95k, most go at 70k. An actual misfire will throw a code. Do you have a code? Or is the car just stalling out when low on gas? Fuel pumps should be good to 130k-150k, I replaced mine at 150k and it was still working fine. I was just tired of waiting for the pump to fail.

Motordyne G35 I was thinking it could be the coil packs.. and nope it’s not stalling just feels rough and the exhaust sounds like a Subaru lol only at 1/4 tank and lower

And no engine codes

Check fuses and relay.

Sounds like its in limp mode or something is up with the transmission. Do you have an automatic transmission. How many miles?

Yes, the door lock actuator eventually goes out, it is an electric motor after all. Very common. Be thankful you do not have a BMW, on my E46 when the door lock actuator goes out, you are unable to unlock the doors with your fingers like in the G. The lock sucks down into the door and you can't manually unlock the door. The key is not meant to be used on the BMW to unlock the door. So after using it for a very short period the keyhole stripped out in the door. I've been using my key to unlock my G's driver side door for over 5 years now, the keyhole has yet to strip out on a Nissan. BMW it stripped out in less than 6 months of use and then there was no way to lock or unlock the car anymore. I was forced to replace it, the door lock actuators and a new keyhole lock.

Motordyne G35 oh wow that is crazy. Glad I did not get a BMW haha. Thanks for the info really appreciate the reply as well. Ever since I owned my G the only issues I ran into are all electrical. 110K miles and my G is going strong. 😊

wisconsindabber Have someone crank the engine why’ll you put your hand on the fuel pump relay if you feel or hear it click then the relay is good. If you don’t hear the pump but can hear and feel the relay click then pump is bad if you hear and feel the relay and hear the pump but it sounds not too good relay could be bad or pump as well. A relay can be bad but still work just not right a pump can also be bad and still work just not 100% so it’s hard to figure out I’d say just change the relay first try it out if you still have stalling problem or staring issues I’d next try the fuel filter witch is easy to change it’s usually outside the fuel tank. If non of that works change the pump

Cam shaft

This is a very common issue, even I have the same problem. I just use my trip meter, because mileage tracking never lies. I've tried cleaning the sending unit and I've replaced my fuel pump, still same issue with the needle reading wrong. Mine says Full and will drop to about half a tank at regular speed like it should. Then out of nowhere, half a tank is at E with the gas light coming on. With mods done to the G and my driving, I get 14-16mpg. I fill up the tank to full every 200 miles or 250 miles.

Motordyne G35 So I have to start tracking my mileage instead of reading the meter. Thank you so much!!!

It’s the sending unit it’s what reads the tank level as the gas goes up or down in the tank the float goes up and down and that sends voltage to the computer the reads that and sends voltage to the gage that displays the level. Sometimes the sending unit sends the wrong voltage and the readings become off

anudeep elineni ...if you can hear it 9 times out of 10 it is good. How many miles do you have?

I’m having the same issues with my 04 Z

Hey man what did you do to solve this issue? My G is doing the same thing

@@MA-it3ps check the light on the dash. If its on then car won’t start

@@anudeepelineni6661 Thanks I'll see if its a NATS issue. I'm gonna also whack my starter in the morning to see if its a bad solenoid

Also no check engine light, only light code it’s throwing is p2a00 code but that code been on for a while and my car never acted like this till yesterday

Throwing a code for an 02 sensor but hasn’t acted up till now. Those 02 sensors aren’t for looks, you know what do; replace your 02 sensors to fix your problem.

@@MotordyneG35 i fixed it no check engine light for over 300+ miles and it still does this i have videos i could link you

I normally hear a slight humming sound.

c CC Weak fuel pumps might still sound good and the car will still run but they will fail randomly and stall the engine. Had this problem I could start and drive the car fine but at random times it cut out and I’d have a hard time starting again. Once started it work again for few days before cutting out I started noticing it was becoming more frequent now. I was told it was the fuel pump after testing the pressure it was 10 psi lower then it should be kinda odd cause engine was running but it was still too weak to keep it running properly why I was experiencing the cut outs or stalls.

Jxmez Druqz ...Yes, just get a double din kit.

Motordyne G35 could you recommend a good one and sound system so I can bump in the whip

My old headlights, the OEM 2005 non-projectors were horrible! Even on the Meguiars headlight cleaner bottle, is a picture of a G. I seriously had to clean them 1x per week, I hated them. I upgraded to the 06-07 OEM projectors, that problem went away.

UV coat is gone. Sand, polish and put on a headlight sealer and it will stay clear close to a year or so (depends whether you garage your vehicle).

SAVAG3 ...good question. Does your windshield wipers shoot fluid?

Maybe the fuel filter is clogged restricting pressure? Don't know why it would be intermittent in that way though

Did you ever figure it out??

fuel pump relay

TheTootoo222 I have the same problem

@@elmerchavez9462 I fix the problem

Weak fuel pump for sure car losses power can’t rev past 3000 yea weak pump

@@ryans413 you is correct but I find my problem it was converters it runs like a dream now

if your half deaf like me you cannot here it at all

Fuel tank full of rust and fuel pump is dead. Fix is second hand good fuel tank, new fuel pump, clean injectors. Or take fuel tank to professional to get cleaned and relined.

Could be clogged fuel filter this happened to me car work fine but at random time the engine would stall out like it had no fuel. It turned out my fuel filter was clogged and the pump would give out trying to pump gas pass the clogged filter. Changed the filter now pump dosnt cut out anymore runs great

No it needs the fuse to regulate pressure

Infiniti VQ if its the same im thinking/connected to the cover he took off... windshield washer fluid.

This is a very common issue, even I have the same problem. I just use my trip meter, because mileage tracking never lies. I've tried cleaning the sending unit and I've replaced my fuel pump, still same issue with the needle reading wrong. Mine says Full and will drop to about half a tank at regular speed like it should. Then out of nowhere, half a tank is at E with the gas light coming on. With mods done to the G and my driving, I get 14-16mpg. I fill up the tank to full every 200 miles or 250 miles.

Motordyne G35 thanks I was about to do all those to see if it fix it but I will do what you did much appreciated👍🏽

I've been been told that if you already tried the pump and and sending unit, then it's the cluster that's the issue at that point.

what symptoms did your car have before you changed it?

MEXECUTIONER the car wasn’t turning over and there was a solid red light on top of the dash

its not inside the car its inside the tank generally

Joe Scheller Yes obviously he means you can hear it sitting in the car

@@ryans413 you missed my point if your almost deaf like i am you cant hear it period