Questions tagged [fuel-pump]
The pump or pumps in a vehicle fuel system that move fuel from the tank to the engine and that may also provide fuel pressure in gasoline engines. This pump may also be called the lift pump to distinguish it from the injection pump of a diesel engine.
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Does the amount of fuel in the tank matter?
As long as there is some fuel in the tank, does the fuel level matter? In other words, is it advisable to make sure the tank is mostly full most of the time, or is this just silly? In other words, are ...
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Is it bad on your fuel pump to have your tank run low? [duplicate]
Ive always been taught it was bad on your fuel pump to run your vehicle tank close to dry as it would damage the fuel pump but Ive never seen any validation to support this statement. So will running ...
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Why is the effect of a bad fuel pump more noticable at higher speeds?
I get that the main effect of a bad fuel pump is that the engine will cut out at higher speeds, and that this is often not easily noticeable until that happens because there are little or no prior ...
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Two Fuel Pumps died
Already having replaced 2 fuel pumps, both died.
Seems to have a problem in somewhere (alternator, battery, electricity) or I have no luck for fuel pumps.
The last one, last 6 months, before died ...
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Failure to start in frigid temperatures
RE 2001 Ford Explorer
It has a new battery, coil, and wires in place. The truck will not start below -7 F despite strong cranking; in these temperatures, sound of fuel pump priming is muted or absent....
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Can't find out a correct fuel pump for my vehicle
I have a 2008 Dodge Charger SRT8 6.1l.
The trick is, that I need a fuel pump replacement for that vehicle and I can't find the appropriate part.
Fuel tank capacity is 72 liters (22 gallons)... On the ...
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Do worn brushes in an electric fuel pump increase fuel flow rate?
Electric fuel pump manufacturers can provide pump curves like this one below by Pierburg:
I wanted to confirm my understanding of the curves when simulating the effect of worn brushes in the electric ...
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Do I have a fuel pressure or injector problem Part 2
This is a continuation of my previous fuel pressure / injector question.
So the missing part for my fuel pressure gauge came in and I was able to do a few more tests. The first thing I think is that ...
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Why is a volume test necessary when diagnosing fuel delivery problems?
I suspect my fuel pump causing intermittent driveability issues. I checked the fuel pressure at the fuel rail and it seems like the pressure is fine: ~2.4 bar at idle, 3.1 bar at engine off (3.09 bar ...
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Does electric fuel pumps run at constant or variable speed?
In websites I have seen that fuel pumps have a pressure range of say 30-95 psi. Why do they give a range of pressure? I had read that these pressure values refer to the unobstructed flow pressure ...
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Do I have a fuel pressure or injector problem, or am I just chasing ghosts?
I just did a fuel volume test on my 98 Mazda 626 2L GF. According Tim Giles book Automotive Service:
Each injector is energized for 15 seconds... Variations of more than 5 ml calls for replacement ...
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Diagnosing fuel pump relay on 2004 Acura TSX
My wife's '04 Acura TSX began having issues starting towards the end of last summer. It would turn over just fine, but took 5-10 seconds to actually start running. The problem was intermittent - some ...
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Engine lean issues
Vehicle is a 2006 Ford Courier, started having hesitation/loss of power after fill up at a gas station that I'd never been to before.
I depend on it for transport so I'm forced to still drive it, ...
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How to disassemble Pierburg electric fuel pump
I've recently replaced my fuel pump on my W202. The one I replaced seems to be the one that was installed in the factory as it has the MB logo and is made by Pierburg. The new one is from Bosch. In ...
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BMW E60 (525d M Sport 2005 UK). Cranking but not starting. Fuel Pump/Relay issue?
Background:
Long term bad earth problem has been causing iDrive to crash and reboot for years. Bad earth seems to drain the life of the battery over a period of a few years. On my 3rd battery now. ...
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2006 Honda Civic, Automatic, Weak Start-up
My car is a 2006 Honda Civic, about 90k miles, Automatic, new battery about 6 months ago. No issues before now.
Over the last week, it has been starting weakly. By that I mean when I turn the key, ...
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2009 BMW 328i Crank but Won't Start
2009 BMW 328i (N91 Fuel pump) cranks but wont start, what I have checked thus far:
Sprayed starter fuel inside the throttle body and it starts up.
Verified proper voltage is being sent to the pump ...
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Does fuel pump cover need to be sealed with glue?
When removing back seats I removed fuel pump cover to check if any water leaked into it. I had to pry it open as it looked glued down but may just have been the result of time.
When I screwed the ...
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Why does the fuel pump buzzing sound go away after a couple of seconds?
In every fuel injected car that i drove that had electric fuel pump, i always hear the fuel pump buzzing sound after turning the ignition on however after a couple of seconds the buzzing sound goes ...
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Can there be 2 fuel pumps in a petrol car?
My car is a Nissan Primera P12 (2500 cc) and recently I heard from my mechanic that there are 2 fuel pumps in the car. One closer to fuel tank, and another closer to the engine.
Is this a normal ...
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1996 Nissan Sentra won’t start after refueling
I’ve had this car for about a month, and never had a single problem starting up. This morning, after filling the gas tank, I turn the key and absolutely nothing. No electronics or anything. I tried to ...
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Should fuel pump noise be changing according to electrical load and RPM?
One thing that bugs me about my car is that the fuel pump noise is fairly inconsistent. Turning on the lights, aircon, defroster, etc. lowers the fuel pump speed and gives a lower pitched noise. It ...
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Kia Spectra fuel pump won't turn on
Car drove fine the previous day. Today it would crank but not start.
First thought was that the fuel pump gave out, as everything else seemed fine, and I did not hear the fuel pump priming when the ...
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Dirty tank or bad fuel pump
I have 2000 c240. I've been struggling with starting problem for the last 5 days. The story began when I couldn't start the car after driving for 5 minutes. I turned on and off 4-5 times after which ...
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Why are there separate Fuel Pressure Regulator and Maximum Fuel Pressure Tests?
There are a few different active fuel pressure tests listed in the 97 Mazda 626 GF Work Shop Manual ( European ). The first two are an idle pressure test ( 30 - 36 psi ) and a fuel pressure regulator ...
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Fuel Pressure Build-up Question - Honda CRV 2005 as reference
I'm troubleshooting my 2005 CRV - not starting. I had replaced the fuel sending unit as it was dead. The new one spun up and I put the fuel pump assembly back in. I understand the pressure should be ...
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Mercedes ML320 fuel pump stops after 3-4 seconds
The fuel pump in my 98 Mercedes ML 320 died last summer. I replaced it then, but now it's having issues. When I turn the key slowly, I can hear the pump kick in, but when the starter kicks in it ...
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No power to the fuel pump
I have a 2006 Toyota Isis and it had a problem where it idled well, but when you press gas the engine started to stall and when you lift your feet then it idled well again. I took it to have it ...
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Can I mix RON 97 fuel with RON 95 fuel in my car? [duplicate]
sorry for asking a noob question.
My car uses unleaded petrol car.
I have been using RON 95 fuel in my car. It is half tank full.
Now I got £2.80 discount on Shell V-Power.
Can I pump RON 97 fuel (...
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Ford TDCi sluggish until turbo kicks in
I have a 2010 Ford S-max 1.8 TDCi with 70K miles. The engine starts most of the time, sometimes I have to try 2-3 times. If it happens to not start, the engine barely runs, maybe for a second if at ...
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What would cause multiple frequent fuel pump failures?
1986 Ford F-150 with a brand new fuel tank and fuel lines has gone through 4 mechanical fuel pumps in a couple of months.
I put a sock on the pickup tube (was originally missing), an extra fuel filter ...
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How Carburetor/FI will handle fuel supply in high inclination angle
Lets consider, we are going in inclination. (ex:some where > x Degrees).
At this time, how carburetor will pump the fuel into the cylinder. Since of high inclination, it is very difficult for the ...
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Fuel injected car behaved as if gas-flooded on startup, just once
2013 Toyota Corolla wouldn't start, just one time, then returned to normal.
Battery was fine, starter turned over but no ignition. After about 10 or 20 seconds of intermittently trying the starter, ...
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Can revving the engine cause damage to the fuel pump?
I have a 2009 Dodge Ram 1500 and someone was revving my engine while they had the vehicle in park. The vehicle broke down on them losing all power to the engine not too long after. I’ve had some ...
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Fuel pump can't pump after few days stopped
I have a 1995 Nissan Sentra with a carburetor and a mechanical fuel pump. After being parked for a couple of days, the car doesn't start because no fuel reaches the carburetor. At most it, will start ...
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In Tank Fuel Pumps Pros and Cons [closed]
In-tank fuel pumps are common in cars these days. I was first aware of this in 1985 on a Ford Telstar when it was relatively exotic. I have been told that it keeps the electric pump cool and quiet and ...
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Car not starting after few kilometers of driving (Chevy Cruze 1.8L 2011)
I have a 2011 Chevy Cruze 1.8L
It starts fine when the engine is cold, however, after driving for a while then stopping it, it won't start. One day I drove it 25 km, stopped it, then tried to start ...
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Loss of current to fuel pump
There is no current coming to the fuel pump in my 1997 toyota corolla. Only the ground wire has current. The other wire does not have current so what is the cause of this lost of current and how can I ...
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Any huge difference between high performance and stock fuel pump?
Having Dodge Charger 2009 - I had the issues lately with a stock fuel pump which stopped working. I've bought a new one, after 5 months, fuel pump start cranking with a strange noise, and sometimes my ...
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2011 Ford Mondeo 2.3L - petrol fuel pump keeps failing
I've had a 2011 Ford Mondeo 2.3L for about 18 months, and the fuel pump has failed for the third time. Each time the same story - the car drives fine, turn off the engine, leave the car, get back in ...
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Can a Crank sensor cause fuel pump failure?
I have a Nissan Primera P12 2001 (2500cc) which was working without any issues. Yesterday when I try to start, it wouldn't.
Talking to the repair guy said it was the fuel pump. But later he said it ...
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New fuel pump, but car didn't start until tank was about half full
Replaced the fuel pump on Dodge Intrepid 2001, 2.7L engine. Before dropping the fuel tank, drove it until about 1/8 full, so that it would be lighter. Installed the new fuel pump, strapped the tank ...
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Ecu problem on my 1997 toyota corolla
I have now traced the wire that renders my fuel pump powerless. The wire runs from the ECU to the fuel pump relay. It must carry a - charge in order to work the pump. But unfortunately, it is not ...
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Lincoln Continental 2000 fuel pump connector loses 12v when connect fuel pump
I have a Lincoln Continental 2000 and had changed the fuel pump one time and it worked for about a month and after a month the fuel pump failed again and confirmed it failed by applying 12v and ground ...
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Switching fuel pump from "in tank" to "in engine bay"
Here are some mildly related questions about the pros and cons of moving a fuel pump from being in the tank to in the engine bay:
In Tank Fuel Pumps Pros and Cons
Is an "engine bay" fuel ...
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Replace Old fuel filter or Fuel Pump | Dilemma
The mechanic today diagnosed my car rail pressure with roughly around 15 psi (1.5 bars) and it should be around 30-40 psi (2.5-3 bars). He told me that it could be fuel regulator, fuel pump or fuel ...
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Cant find the exact fuel pump i need for my 04 mercury mountaineer please help
04 mercury mountaineer needs fuel pump and im having trouble finding the one with my exact connector. I keep getting one with 3 holes in the connector and I need 4 holes
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Audi 3.0 TDI HPFP replacement - original vs aftermarket
I have an Audi A6 3.0TDI from 2010 with very low mileage (65000 miles, 105000km) and no apparent engine problems.
I got a note from service about suspicious sound coming from the high-pressure fuel ...
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Just what is vapor lock, does it have anything to do with the fuel pump?
Just what is vapor lock and how do I fix it? I have a 2005 Nissan Altima SL 2.5l and after replacing a leaking radiator, hoses, clamps and thermostat it's still running hot! Someone said it was vapor ...
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Why is there no power going to my fuel pump?
2003 Kia Spectra, here's the backstory : I recently changed the spark plugs and soon after doing so I tried to turn the car on and it only cranked. The owner before me probably try to work on the ...
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