Question about 2001 Ford Focus

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Fuel pressure regulator

I have already replaced the fuel pump and now it won't start. I have fuel pressure but when i check the spark plugs they are full of gas. Too much Fuel.

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Coil or crank sensor,very unusual for a car to dump to much fuel in and not start,would cough and splutter and at least try.

Posted on Jan 26, 2009

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  • Ford Master
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You have disconnected a wire somewhere under the bonnet look agin

Posted on Nov 12, 2008

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I have a 1987 ford ranger the engine turns over but it wont start


Spark at plugs? Fuel filter? Pressure on injector delivery line? Pressure relief valve? You may be able to measure fuel pressure at the pressure relief valve location. and return line. If you have spark, I'd say it's a fuel supply problem

Dec 21, 2014 | Ford Cars & Trucks

1 Answer

I have a 1988 suburban 1500 4x4 5.7 liter v8. I replaced fuel pump and filter, will start and run for about 10 seconds then die and will not restart. Not getting fuel somehow. Injectors were also replaced....


Most likely it is the fuel pressure regulator..also check for spark here's some info for you.. The first thing to do is check for spark.

Disconnect #1 ignition wire at the spark plug.
Install a spark tester into the end of the spark plug boot.
Have an assistant crank the engine over and check for spark at the tester.
Repeat this process at each spark plug.
If any cylinder does not show spark, proceed to secondary component tests.
If ALL secondary components show no spark, test components individually.
If all cylinders test O.K., inspect for fouled spark plugs and clean or replace as necessary.

2010-08-21_174426_1.jpg

If spark checks out good, then you could have a fuel delivery problem. I would recommend to start by checking fuel pressure. Fuel injected cars are very fuel pressure sensitive. Fuel pressure is very important and must be within specifications! But if the pressure is low, it does not mean the pump is bad. A plugged fuel filter, a pinched line, and low voltage at the pump can contribute to low fuel pressure. All three must be check before replacing the pump! You can get a fuel pressure gage at a local auto parts store for cheap.

Fuel pressure testing is frequently overlooked but it is one of the common causes of poor performance. The test procedure must include testing that will insure normal
fuel pressure under all operating conditions.

Key Factors

1. Fuel demands are low at idle.

2. Wide open throttle at high engine revs uses the most fuel.

3. Port injection fuel pressure must be reduced when manifold vacuum is high. Vacuum pulls fuel out of the injector causing it to deliver too much fuel if the pressure remains high. Manifold vacuum is used to open the pressure regulator at a lower pressure when vacuum is high.2010-08-21_175858_1.gif

Mar 31, 2013 | Cars & Trucks

1 Answer

Won't start replaced feulpump and feulpressure regulator and still won't what could it be


Did you check fuel pressure at the injectors before and after you replaced the pump ?
And did you also replace the fuel filter ?
Is it getting spark to the plugs ?

Jan 12, 2013 | 2003 Chevrolet TrailBlazer

1 Answer

Won't start,has spark, has fuel


Are you sure the injectors are spraying if the pressure is zero ?
Have you checked the fuel pressure regulator ?
Are the spark plugs dry ?

Dec 12, 2012 | 1998 Cadillac DeVille

1 Answer

Toyota 4runner sr5 won't start its getting gas and spark.


Sounds like the problem is beyond your ability to diagnose

Too much fuel could be a leaking fuel injector or fuel pressure
regulator.

Too much gas & a no start isn't really the issue

Did it start & run before you did the wires,I would check your work
& mark the wires with a pen & also have diagram on paper before
you start a job like that. Especially when if you have no reference
material.

You put a mechanical fuel pressure gauge on a running engine
& the apply vacuum with a hand pump to regulator to watch for
pressure change,eg: pump pressure vs: regulator press

Nov 17, 2012 | 1997 Toyota 4Runner

1 Answer

1996 4.3l blazer will not start, already replaced the fuel pressure regulator, plugs and wires. Any ideas??


First check for at sparkplugs if you have spark then check the fuel pressure it should be 55-61 with key on and engine off.If not within specs replace fuel pump and filter.

Sep 22, 2011 | 1996 Chevrolet Blazer

1 Answer

Dear Fixya, My 1993 excel hyundai turns over but won't start, we put plugs and wires and new fuel gasket. we r wondering where the fuel pump is, is there one or two pumps and how to get to them to fix...


Have you checked for spark first? Sometimes a car won't start due to no spark. This condition is usually caused by: Security system, bad ignition module, crankshaft sensor, camshaft sensor. You check it by pulling a plug wire and putting a screwdriver in the wire to see if it arcs. If it is getting fire look for the fuel pressure release valve usually located on the fuel rail, looks like a tire valve stem. If it shoots out gas, and you hear the fuel pump prime, check the fuel pressure regulator. It could also be the timing. There are four things needed for a car to start: fuel, spark, timing, compression. As for your question, as far as I know there is one fuel pump, you have to drop the tank to fix it. Hope this helps.

Jun 10, 2011 | 1994 Hyundai Excel

2 Answers

Starts fine, but then bogs out when accelerating, practicaly have to give it no gas and creep up to speed.Doesn't want to go up hills. Just replaced the cpi, fuel filter and fuel pump 3 months ago. Also...


Check the fuel pressure regulator and the EGR valve, I would check the fuel pressure regulator first and go from there. Good luck and keep me posted. Not sure what the pressure should be but thinking it's 62 to 65 PSI upon start up and should drop 5 PSI when engine running, check the vacuum line to the regulator.

Dec 09, 2009 | 1993 Chevrolet S-10 Blazer

3 Answers

The fuel pump pumps but on start up it dies


Flel regulator will only affect max fuel pressure only will not cause it to not start. try replacing fuel filter first if still does not get fuel then you need to see if it is fuel related or if you have a spark at the spark plugs, pull off a spark plug boot and put screw driver in it hold 1/4 inch away from bare metal and crank engine if you get a spark then it's fuel relateed if no fuel it can be the crank shaft sensor or the cam shaft sensor. let me know if it has fire.

Aug 30, 2009 | 1995 Ford F250

1 Answer

1995 blazer was running rough, now not starting


if you believe some one put water or bad gas in your tank, then you will have to drain the tank. however, to know if you have water in your gas, first disconnect fuel return line or the line that goes in to the fuel pressure regulator put some fuel in a clear glass and let it sit for 15min.if you see white cloud at the bottom of the glass or water. drain the tank. if not check for spark by removing one spark plug wire and spark plug. place the spark plug in the spark plug wire boot and touch it on the metal part of the car. do not touch the spark plug itself only the booth with the plug in the boot. have some one crank the car over. if you see spark, the spark part is ok. but if no spark, check the coil with a volt meter it should be 3 to 8 ohm if not replace the coil. if ok, check for fuel by removing one spark plug or two and see if they are wet,if wet pump is ok. if not check the fuel pump relay and fuse. if fuse is blown replace. check relay with a volt meter. resistance of the relay should be between 40 to 80 ohm. not mega ohm,if mega ohm, replace. if not , listen to the fuel pump while some one is cranking the car. if you donot hear the pump, disconnect the pump electrical connector and applive 12 volt and ground to the pump by using a jumper or any wire and listen for pump sound. if not replace the pump. if there is sound coming from the pump, it is ok. check the fuel pressure regulator with a fuel pressure gauge or simply disconnect the vaccum from the regulator and try starting the car. if fuel pump is ok and spark is ok. then it maybe the computer or the crank position signal. also check the fuel filter it may be clog.

Jan 02, 2009 | 1995 Chevrolet Blazer

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