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How do I check for volume on the fuel pump? - Cars & Trucks

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Its more the preasure the pump creates
the volume is controlled by the resovior tank most fuel pump systems use

Posted on Dec 04, 2014

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Posted on Jan 02, 2017

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Fuel rail pressure too low


You didn't say whether petrol or diesel engine...

In the case of trouble or doubt regarding fuel filters it is best practice to cut open the filter and carry out a close examination for possible contaminants.

Fuel pressure is important, in fact a common rail diesel won't even start if there is insufficient pressure, but the volume of fuel delivered is at least as important as the achievable pressure - without sufficient volume the required pressure simply won't be achieved.

No fuel system check is complete unless the delivery volume has been tested and found satisfactory. If it isn't satisfactory the fuel tank, the pump screen, the pump and pipework should be checked. The pump screen if fitted is so fine water will not pass through it and so water in the fuel tends to reduce the volume.

I suggest you have the fuel system checked - properly!

May 28, 2017 | Cars & Trucks

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4cyl. 181. CI chevy w/ 2 stromberg 81's. fuel pumps 1 t0 4 psi external, no fuel regulater. The carbs are newly totally reconditioned


these should have a fuel pressure I think around 6-8lbs. check the volume the pump puts out as well. if it can`t handle the load it will run out of fuel while accelerating. volume should be about 1/2-3/4 litres in 20 seconds. its been awhile so I maybe off.

Sep 05, 2015 | Cars & Trucks

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I ran out of gas and while waiting for help, I had my hazard lights on which killed the battery. I put gas in and jumped the car (kept the jumpers connected til the battery voltage got up to 13.4) but it...


Running out of gas is a real pain,but your pump would not fail because of this only. If you often run the tank low on fuel it will cause premature pump failure because the fuel cools the fuel pump! I suggest you check to see if you have fuel pressure at the fuel rail. If you have fuel pressure(20 to 40 psi) then check fuel volume,(about 1 pint in 30 seconds) If you have pressure but no volume your filter is most likely resricted. One easy way to check the pump is to have someone turn the ingition switch from off to run, with the fuel door open put your ear to the filler inlet and listen for the pump to run. it should run for about 3 seconds If you dont hear the pump running check the fuse and relay for the pump.If it is running replace your fuel filter(much cheaper than a pump and wont hurt to replace anyway). Hope this helps Bill

Dec 04, 2014 | Cars & Trucks

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I CAN HEAR MY FUEL PUMP RUNNING BUT NOT ENOUGH FUEL TO CRANK CAR


Fuel pump has nothing to do cranking a motor

If you suspect a fuel issue- why have you not checked
fuel pressure & volume at the motor?

If the motor turns over,check for spark & injector pulse,
as well as fuel pressure & timing chain or belt

Aug 19, 2014 | Cars & Trucks

1 Answer

How to check out a fuel pump system on a1998 dodge dakota 3.9 eng


if the fuel pump is running then check the fuel pressure with a gage it should be around 35 lbs pressure for a multipoint injection system if its throttle body injection its around 15/18 lbs. also check fuel volume its usually around 1 pint in 15 seconds.

Aug 16, 2014 | Cars & Trucks

1 Answer

My 95 corolla was fine one min then it started skipping . it will crank and run not for long when i give it gas it starts boggin down backfiring. fuel filter good would it run if fuel pump out?


check your fuel pressure and volume for the pump. Fuel pump may not be supplying enough pressure and volume to keep engine running. also on your fuel rail,on the engine, where the fuel line attaches, should be a fuel pressure regulator. where the fuel line attaches on the regulator should be a screen, see if dirty and clean.if pressure over 32lbs chances are regulator is inop ,or fuel return to tank blocked.

Nov 03, 2013 | Cars & Trucks

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Could it be fuel pump does not have enough power


if the car was running just not enough power why would you change the fuel relay as the pump is running unless you mean fuel filter.now you could have a fuel pump problem if its not able to run at the pressure it was designed to run.check the fuel volume as well.if the pump is running at the proper pressure the volume can be low and not supply enough fuel volume for the car to run at an and all thottle demands.another thing to check is the exhaust sytem being plugged up.just some things to check

Mar 29, 2012 | 1998 Dodge Caravan

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My intrepid dies while driving


It sounds (based on your description) like there is a Fuel problem:
1. Check the fuel pressure at the port on the Fuel Rail. Check especially when operating at higher RPM's than at idle or stop. At these levels there is enough gas being provided to keep the engine going. At higher RPM's the Pressure/Volume may not be enough causing the stalling.
2. When was the last time the Fuel Filter was changed? Change this and check operation before moving onto to #3.
3. The Fuel Pump. If the Fuel Pressure and Volume at the Fuel Port is falling at higher RPM's and the Fuel Filter did not help: It sounds like the Fuel Pump is failing. These will fail especially after they warm-up. This problem (losing power and dying) will happen more and more frequently and the Fuel Pump will eventually die all together.
You have to replace the Fuel Filter when you install a new Fuel Pump - it is part of the warranty.
4. The Fuel Injectors: If the Fuel Pressure/Volume at the Fuel Rail is fine, then it is not the Fuel Filter or the Fuel Pump. The problem is "downstream". It may be the electrical aspect of the Fuel Injectors or the mechanical side of the Fuel Injectors themselves. Check each Fuel Injector for correct voltage. If the voltage is correct - Pull and replace that corresponding Fuel Injector. I actually recommend: if you have to replace more that one Fuel Injector - go ahead and replace them all.

Jan 05, 2010 | 2000 Dodge Intrepid

1 Answer

Car cuts off when braking and cornering


Could be a fuel pump issue. If the pump isn't putting out the required volume, the motor will starve during certain manuvers. Check your pressure. It should be atleast 40psi (I think, i don't have much gm experience). Also, there should be a spec somewhere for fuel pump volume over a given amount of time. To investigate this you'll have to jump the fuel pump relay and point the fuel lines at the motor into a container that you can measure the volume of. It may be something as simple as a partially clogged fuel filter, but usually when I've come across this it's been the pump going bad.

Apr 12, 2009 | 1998 Chevrolet Lumina

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