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Low fuel pressure , 3.2L ML Triton 07

Looking for diagrams of fuel pump to see what and where the problem might be , whether there is a blockage or can get gummed up ?

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

maklean
  • 1665 Answers

SOURCE: 1988 Trooper 2.6L 4ZE1 I

It is an electro-magnetic switch valve whereby an oil pressure press is actuated when a desired pressure is attained

Posted on Aug 11, 2008

emissionwiz
  • 75171 Answers

SOURCE: low fuel pressure

U 1st need to test fuel pressure at the fuel pressure test port on the top of the engione in the fuel supply rail to the injector tops, it looks like a metal tire vale stem, u will need to buy a special fuel pressure tester to do this test. U should have around 55-60 PSI at idle, it should go up when u gun the engine but never go down, if it goes down the fuel filter or pump are suspect.

Posted on Apr 29, 2009

  • 2 Answers

SOURCE: Low Fuel Pressure on Landrover Freelander TD4

From 53 reg onwards, diesel pump is under R.H. rear wheel arch, hidden by the plastic wheel arch liner. Older versions have combined fuel pump/sender in the tank (under R.H part of rear seat).
You should be able to hear a faint purr from the pump when ignition is turned on but engine not yet running.

Posted on Nov 15, 2009

citroenchris
  • 600 Answers

SOURCE: hi i have a peugeot 307 sw on a 07 plate. it as

These are prone to the pump in the fuel tank failing,

Posted on Mar 18, 2010

mrjfisher
  • 141 Answers

SOURCE: truck stalled out while driving will not start

Not sure about your truck older Fords have 2 fuel pumps 1 in the tank & 1 under cab drivers side. Anytime you change a pump you must change your filter. also check your fuel line if it has been pinched or has a leak pressure will drop

Posted on Jul 14, 2010

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1 Answer

Will run only by squiring fuel into carb.


Hi Del:
Sounds like you're well on the way to solving this.
There is a fuel delivery problem to deal with.
Either:
- the carb is gummed up,
- the filter is plugged, or
- the fuel pump is on vacation.

With the top of the carb exposed, look into the barrel(s) and pump the throttle linkage. The accelerator pump will squirt gas that you should be able to see. If there is gas, that should mean that the fuel pump is working, and the problem will possibly be blocked carb jets. A carb cleaning would be in order.

No gas?
- Check the fuel filter
- Check fuel pump

My guess from personal experience would be the fuel pump.

Jun 25, 2015 | 1989 Dodge Ram 50

1 Answer

My 4514 Honda has a snow blower for the winter . It keeps stalling and the fuel pump never shuts off so I guess isn't pressurizing . I pulled the fuel line at the carb & it is pumping gas ....


sounds as if there is sticky gum in the carb that is keeping the float from seating unless it is hot enough to unstick. Take the carb bowl off and examine it for gum (real old gasoline will do that.

Feb 02, 2015 | Honda Cars & Trucks

1 Answer

No power in my fuel pump fuel relay for fuel pump


Get yourself a wiring diagram & study it & then
start testing the fuel circuit

How would you know whether you had power or
now power, to anything, working blindly?

You listen to what your told.
I wouldn't-- you may have changed a good fuel pump

I NEVER walk to any vehicle without a wiring diagram

How would you learn the system & the circuits, without one?

Oct 16, 2014 | Cars & Trucks

2 Answers

460 ford fuel line diagram


Are the pumps getting power, and is there a tank switch ?

Feb 08, 2014 | Cars & Trucks

2 Answers

Minnie winnie


gas or diesel ? if its gas find shrader valve (tire valve looking thing) on injector fuel manafold top of engine tap key on/off several times depress center of valve with plastic point nothing metal (old ink pen?) look for fuel to briefly spray out a bit (shield eye's) no fuel ck fuel pump , filter and inertia switch ,yes fuel ck all the sensors the injectors are not firing
Diesel ? A 86 would be A IdI type so loosen fuel fitting(one turn) to top of # 4 injector (you can't reach others) Do not remove it (High pressure!!!) crank engine several times over look for fuel leak at fitting thats loose ,it might even start if injector pump was airlocked that happens alot from sitting ,if it does don't get your body near loose fitting(high pressure) too dangerous shut off key and tighten fitting then restart engine

Nov 06, 2013 | 1986 Ford F 350

1 Answer

1994 jimmy 4.3 vortec. revs and idles perfect in park. start driving down road and engine surges almost cuts out. even tried putting under load with foot on brake gave it gas, no misses till driving down...


This sounds like a dirty fuel filter to me hence the load has no effect till driving as the fuel supply will be proportional to the revolutions of the engine whether it's fuel injection or not.When you are driving you are obviously using more fuel so the demand is greater for fuel and if the fuel line is blocked in any way it will do what it is doing.Although there might also be a blockage in another section of the fuel line and if yours is a carburettor model then the fuel jets or air jets in the carb might have dirt in them.Plus fuel pump might be on it's way out due to wear.If fuel injection model, then your fuel distributor may also have dirt or gunge build up, or fuel injection pump is not functioning as it shouild due to age or dirt.If none of these solutions are correct then you will have to start looking at the ignition line, Faulty module, distributor etc.

Apr 14, 2013 | Cars & Trucks

1 Answer

Where is the fuel pump located 1996 Isuzu Trooper


Fuel pump is located inside tank and tank has to be dropped to access fuel pump.

Jan 03, 2013 | 1996 Isuzu Trooper

1 Answer

HOW MUCH WOULD IT COST TO HAVE A FUEL PUMP INSTALED


George,
No simple diagram for changing the fuel pump. It is located inside the gas tank. The gas tank needs to be removed to change the pump. The pump is part of an assembly which consists of the pump, fuel gauge sender and pick up. You also need to change the fuel filter when you change the pump. It should take a professional mechanic about 3 hours to drain the fuel out of the tank, remove the tank, change the pump and fuel filter. Multiple the mechanic's time by whatever the repair shop charges per hour for labor. There are several different pump assemblies for the vehicle. Price depends on whether it's 2 or 4 doors and 2 or 4 wheel drive. Best guess is about $600 total.

Nov 26, 2011 | 1998 Ford Explorer

1 Answer

1993 astro van wont start when van has been sitting for awhile. spray intake clean into throttle body and van starts and runs.


depends how long its been sitting if starts with easy start then its a fuel pump problem like the fuel has gone bad or the pump has gummed itself up ,so take it out and check that the pump still works as i suspect that its gummed up and good clean will cure it for you

Feb 22, 2011 | 1993 Chevrolet Astro

2 Answers

While driving the vehicle shuts down and after


Sounds like fuel delivery problem. I have seen problems such has crud in the gas tank accumulates in the line, blocking it, or some foreign object such as a foil gum wrapper in the gas tank causing the pump inlet to become blocked. After the engine stops running, the blockage eases allowing gas to come through for a bit, enough to start but when the demand for gas goes back up, here comes the blockage again. Could also be a failing fuel pump. Start with easy stuff like a fuel filter change, and I think there are pressure testers where you can check your flow coming into the carb, injectors or whatever you have on that engine. It is nearly 20 years old, many things can and will fail with age and use.

Apr 08, 2010 | 1993 Jeep Grand Cherokee

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