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New fuel pump and filter lose of pressure 2003 f 450 v10

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Why is my 1987 ford ranger acking iike its loosing fule pressurs win diving


It may BE losing fuel pressure, Robert. Check the fuel pressure and flow rate at the fuel rail. Filter, plugs, and cap have nothing to do with fuel pressure - your fuel pump and pressure regulator are the only things that can change fuel pressure very much.

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My 2002 Volkswagen beetle starts to accelerate and then slowly loses power and then will not accelerate past 20. We had a bad alternator that had to be replaced but no one can figure out why it keeps...


It might not be getting enough fuel due to a dirty fuel filter, air filter or a failing fuel pump. I'd try a new fuel filter & air filter first then check out the pressure on the fuel pump. You may also have injector problems.
Good luck.

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1999 F250 V10 where is the pressure regulator


Im pretty sure this is it. :::1b851a65-ce94-4055-9690-fdc7ed5bc3a1.gif
LOWER LEFT.

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I have a 2002 V10 ford chassis motorhome. Took it in to have exhaust manifold bolts replaced. Now will not start. No fuel. You can hear the fuel pump running but when cas line opened at inline filter under...


There is a strainer filter attached to the fuel pump in the tank however you really need to see how much gas is actually in your tank first. Sounds like a fuel line may be pinched.

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Engine light was on and van was running rough. The local repair center says that it needs a new fuel pump (2 of 6 sensors are receiving low fuel pressure ratings). I keep getting different answers on what...


First check the pressure at the fuel rail at the top of the engine with a fuel pressure gauge these ar fairly expensive for what they are about a 100$ so if you can borrow one it would be great. doing this ensures you truly have low fuel pressure instead of a sensor or electrical problem. If the pressure is low, Id start with the easiest cheapest thing first should be the fuel filter if it is in line, if its in the fuel pump itll be harder, might think about doing both pump and filter at same timeif this is your case, also theres a fuel pressure regulator located at begging of fuel rail should be about forty dollars but easy to replace. fuel pumps generally just die and dont loose pressure, It is rare for a fuel pump to lose pressure so id replace it last.

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My ford v10 engines hesitates under load. It


1 Ignition system not operating properly
2 Dirtyor clogged fuel injector(s).
3 Low fuel pressure. Check for proper operation of the fuel pump and for restrictions in the fuel filter and lines.
4 Fuel injectionor engine control systems malfunction.
5 Vacuum leak at the intake manifold or vacuum hoses.
6 Restricted air filter.
7 Fuel pump or pressure regulator defective.

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1 Answer

Hi, back again. Changed the fuel filter and a new


No fuel pump reset switch on a Jimmy. If your pressure goes up to normal, then drops back down after 2 seconds, you need a new fuel pump as the return is not working correctly to keep fuel in the lines.

Jun 29, 2009 | 1999 GMC Jimmy

1 Answer

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had this problem on my neighbors 98 chevy truck with the same engine !!
it turnd out too be the fuel pressure regulator,you have too pull the upper intake too replace it!!

Jun 04, 2009 | 1998 GMC Sierra

1 Answer

2000 F350 Super Duty V10 Power problem, Truck starts up ok, but has a problem on acceleration, I changed the fuel and air filter with no difference. I checked my fuel pressures and they seem low to...


Your choises are...bad fuel pump, restricted fuel filter (new?) bad fuel pressure regulator...out of gas....can you pinch off the return fuel line to the tank? some are rubber and some are hard plastic...dont pinch the plastic. This will give you the unregulated pump pressure. If it doesn't go up you have a bad pump or it's drawing air from the tank (pick up restricted/fell off or no fuel) if pressure goes way up and runs good your regulator is bad

Jan 08, 2009 | 2000 Ford F350 Super Duty Super Cab

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