Fuel and Engines
Fuel Filters
Fuel Pumps
Chevy S-10

What is wrong when the engine is not getting fuel pressure but the fuel pump and filter are OK?

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2011-03-28 21:24:54
2011-03-28 21:24:54

Check three things: Fuel pump relay, and fuel pump inertia cut off safety device if equiped. check for 12 volts at the fuel pump to rule out faulty connector or wiring.

Plus you need to check if the fuel injector if stuck open and also the fuel pressure regulator.

this is on a 2000 Kia Sportage and no cut off safety switch,where is the pressure regulator located

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Fuel pump, blown fuel pump fuse, fuel filter clogged, fuel pressure regulator, or defective ECU.

Your filter needs too be purged, after you purge it your pressure will go back up,

fuel pump, wiring, relay, clogged filter,kinked fuel line.

The wrong viscosity of oil in your engine.

Unfournately, those are signs that your engine is worn and will need to be rebuilt, or replaced. Those are signs of worn rings your probably getting little or no compression.

No, the fuel would still be pumped to the engine but it would be at the wrong pressure at the injectors.

It is normal for the oil pressure to be high when the engine is first started and is cold. It should settle at around 40 psi once the engine reaches full operating temperature. If it does not, then change the oil and filter and make sure you are using the correct weight oil, which is more than likely 5w30. Use a good oil filter such as Purolator, Wix, or Motorcraft in your Ford. Make sure to use the correct size filter. If none of this helps, then have an oil pressure test run, as your oil pressure gage may be wrong.

IS the check engine light on? The computer has the capability of putting the car in a "limp home mode" if somethign is wrong. If no check engine light, your fuel filter may be clogged and blocking fuel or the fuel pump is getting weak.

this could be caused by, dragging brakes low tire pressure, dirty fuel filter dirty air filter wrong viscosity oil and last but not least A HEAVY FOOT ON THE GAS PEDAL Bad coolant Temp sensor

There are some engines that will "KNOCK" if the wrong oil filter is used but in most cases the engine must be disassembled and repaired

Just because you hear the pumps hum does not mean they are working. Also, where is the third pump? There should only be two, one in each tank. I am not aware of an F250 with a high pressure frame rail pump, how old is the truck? Have you pulled the fuel filter and checked for restriction? What happens when you pull the line off and turn the key on? Does fuel come out? When you say no fuel is getting to the engine, do you mean you have no fuel pressure, or the injectors aren't spraying anything? Could it be that fuel is getting to the fuel rail but the injectors are not firing? Could it be that you are getting some fuel pressure, but not enough fuel pressure? What if your fuel guage is wrong, and you have two empty fuel tanks? These are questions you need to answer to eliminate things down to your cause.

fuel filter may be clogged or fuel pump is bad need to check fuel pressure to see if getting rite amount of fuel

The bearings on the crankshaft are worn out. A complete engine overhaul is needed.

The engine parts are rubbing until the engine oil pressure builds up and the oil starts to lube the parts. Old oil, wrong viscosity, or a clogged filter can cause this to be worse than necessary.

Yes. There are instances where the wrong filter can be installed.

If your oil pressure light comes on while engine is at an idle, maybe 10-40 is too low of a viscosity for your engine. I'd go to a 20-40 or 30-50 and see how the oil pressure does. make very sure you have the correct filter, some "factors" did for a while produce the wrong filter for certain vauxhall engines, these filters did not have a bypass and would cause light to come on, would couse catastrophic engine loss if not sorted. suggest recheck filter and obtain one from main dealer if not already done so. possible blocked oil pick up pipe in sump ,not uncommon if infrequent oil changes ..............PS i had this problem you made need to change the oil pressure monitor switch just on the top, front of the engine, it also appears to leak oil when the switch has gone!

Most of the time a diesel has a hard time starting when its cool. When they have a hard time starting when hot, it is usually caused by the fuel running back into the tank. Check for a cracked fuel filter housing or a cracked low pressure fuel line. It is possible you have the wrong fuel filter. Install a top quality name brand filter like Wiks or Baldwin that has an anti bleed back valve in the filter.

Wrong size filter for the engine, filter too tight or too loose, filter has a hole in it, or gasket not oiled before installation thus causing it to leak. The old gasket could have been left on the engine thus causing a leak with 2 gaskets installed.

wrong oil filter or could be a different weight of oil

If it's not getting enough fuel it could be the fuel pump or the fuel filter.

Cold engine it's the oil filter, get a high end filter with a pre lube valve. Hot engine cheap or wrong weight oil, or, bad oil pump.

The light means low oil pressure. It can be you installed the wrong filter or the filter is defective. It can mean the oil pressure sending unit is defective and it can also mean the oil pump is failing.


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