Engine turns over but won't start

Tiny
2CEXPT
  • MEMBER
Hi jhawk7783, Welcome to 2carpros and TY for the doantion

You are losing fuel pressure -check the injectors and fuel pressure regulator if its leaking

The fuel pressure should be key on engine off 30-65 psi

Its not the same thing


https://www.2carpros.com/forum/automotive_pictures/12900_fpd_2.gif



The fuel rail pulse damper located on the fuel rail reduces fuel system noise caused by the pulsing of the fuel injectors. The vacuum port located on the damper is connected to manifold vacuum to avoid fuel spillage in the event the pulse damper diaphragm were to rupture. (The pulse damper should not be confused with a fuel pressure regulator, it does not regulate fuel rail pressure.)


https://www.2carpros.com/forum/automotive_pictures/12900_fpr_4.gif



The fuel pressure regulator is attached to the fuel rail downstream of the fuel injectors. It regulates fuel pressure supplied to the fuel injectors. The regulator is a diaphragm-operated relief valve. One side of the diaphragm senses fuel pressure and the other side is connected to the intake manifold vacuum. Fuel pressure is established by a spring preload applied to the diaphragm. Balancing one side of the diaphragm with manifold vacuum maintains a constant fuel pressure drop across the fuel injectors. Fuel pressure is high when engine vacuum is low. Excess fuel is bypassed through the fuel pressure regulator and returned through the fuel return line to the fuel tank.
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Tuesday, December 29th, 2020 AT 12:28 PM (Merged)
Tiny
JHAWK7783
  • MEMBER
Where exactly is the fuel pressure regulator on that engine?
I assumed that I needed to remove intake manifold, but front stud broke. I'll finish that problem tomorrow with more daylight.
Thanks for help.
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Tuesday, December 29th, 2020 AT 12:28 PM (Merged)
Tiny
2CEXPT
  • MEMBER
It will look like this on the fuel rail


https://www.2carpros.com/forum/automotive_pictures/12900_fpr1_3.jpg

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Tuesday, December 29th, 2020 AT 12:28 PM (Merged)
Tiny
JHAWK7783
  • MEMBER
Could the fuel pressure regulator be part of the fuel pump assembly inside gas tank?
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Tuesday, December 29th, 2020 AT 12:28 PM (Merged)
Tiny
2CEXPT
  • MEMBER


https://www.2carpros.com/forum/automotive_pictures/12900_fuel_pressure_regulator_1.gif

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Tuesday, December 29th, 2020 AT 12:28 PM (Merged)
Tiny
THERESA60
  • MEMBER
  • 2000 FORD EXPLORER
  • 6 CYL
  • 4WD
  • AUTOMATIC
My oil malfuctioned and I lost all oil. My car will turn over but will not start, what cai I do to find the problem
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Tuesday, December 29th, 2020 AT 12:28 PM (Merged)
Tiny
JOE F
  • EXPERT
Based on how long you ran the engine without oil is going to determine how much damage was done. If the starter is able to turn the engine over, that is actually a good sign. However, if it won't start, you need to check the basics. First, you need to check if the engine is getting spark and fuel. If you go to our home page under the DIY section, look up both how to check fuel pressure and how to check ignition for spark. Follow the video and directions and check to see if your vehicle is producing both fuel pressure and spark. If you have both, see if the vehicle will start with starting fluid. If it starts and runs for a few seconds, then you're not actually getting fuel to the engine (even though you have fuel pressure to the fuel rail).

Once you determine which is missing, you will need to focus on that system. After you get it to run, you will know how much damage was done to the engine. Pay attention to ticking or knocking sounds in the engine. If they are present, there is internal bearing damage.
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Tuesday, December 29th, 2020 AT 12:28 PM (Merged)
Tiny
THERESA60
  • MEMBER
Thank you. I will do as u say
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Tuesday, December 29th, 2020 AT 12:28 PM (Merged)
Tiny
JOE F
  • EXPERT
Let me know if you have other questions.
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Tuesday, December 29th, 2020 AT 12:28 PM (Merged)
Tiny
EDDIE GONZALEZ
  • MEMBER
  • 2000 FORD EXPLORER
  • 6 CYL
  • 4WD
  • 112,750 MILES
What to do after replacement of the PCM in order to start the car using original keys?
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Tuesday, December 29th, 2020 AT 12:28 PM (Merged)
Tiny
ROY B
  • EXPERT
Good afternoon,

The ECM has to be flashed or programmed to your vehicles VIN number by a shop that has the scan tool for performing this procedure.

Then the key has to be programmed as well.

The cost at a shop is from $195.00 to $230.00.

Roy
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Tuesday, December 29th, 2020 AT 12:28 PM (Merged)
Tiny
JMS1
  • MEMBER
  • 2000 FORD EXPLORER
  • 201,000 MILES
Has fire, in time, injectors are working, p.A.T.S. Is not an issue, Crank sensor is good new plugs and wires. Fuel system is working and has correct pressure.
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Tuesday, December 29th, 2020 AT 12:28 PM (Merged)
Tiny
JOE F
  • EXPERT
If you have good spark, proper fuel pressure, the injectors are working, then it has to run unless it has low compression
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Tuesday, December 29th, 2020 AT 12:28 PM (Merged)
Tiny
JMS1
  • MEMBER
Each cyl. Checks around 150 psi. If the cms were bad would the pcm still send fire to the injectors? This is the only thing i've not tested
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Tuesday, December 29th, 2020 AT 12:28 PM (Merged)
Tiny
JOE F
  • EXPERT
Yes
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Tuesday, December 29th, 2020 AT 12:28 PM (Merged)
Tiny
JMS1
  • MEMBER
Thanks, I will check the cms tomorrow. By all reasons this thing should start if the cms checks good.
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Tuesday, December 29th, 2020 AT 12:28 PM (Merged)
Tiny
JMS1
  • MEMBER
Changed the cms. I have 60-65 psi at the test port on the fuel. Rail. Tried something odd.I pulled the fuel pump relay and she tried to start. It may be trying to get to much fuel. It is acting like a carb. Engine when they flood out. Fuel pump was changed last week. By the way cms was not faulty but change it anyway
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Tuesday, December 29th, 2020 AT 12:28 PM (Merged)
Tiny
HOTROD5$
  • MEMBER
  • 2000 FORD EXPLORER
  • 4.0L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 200,000 MILES
I have the SUV listed above xlt and I recently went to try and start it and it didn't start. Hooked up a battery charger, let it sit for 5 minutes and went back to try and start it up and it cranked but no start. I drove it a few months before that for a while and I ran out of gas on the freeway twice with it. So after the first attempt to try and start it with the battery charger hooked up, I hooked up my scanner and found 2 codes, OBD 2 system checks incomplete and p1704 DIG TR failed to transition state. All I have thrown at it was a new battery. I am currently going to try and start with the basics (fuel, air, spark, etc) but any idea on what the code is specifically?
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Tuesday, December 29th, 2020 AT 12:28 PM (Merged)
Tiny
ROY B
  • EXPERT
Good evening,

I would start by checking the fuel pressure. when you run out of fuel, it damages the fuel pump as the fuel is not only a coolant for the pump but a lubricant as well.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

https://www.2carpros.com/articles/car-cranks-but-wont-start

Check for spark as well. See if the RPM moves up while cranking to see if the crank sensor is sending a signal.

https://www.2carpros.com/articles/how-to-test-an-ignition-system

Replace the battery.

https://www.2carpros.com/articles/how-to-replace-a-car-battery

Roy
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Tuesday, December 29th, 2020 AT 12:28 PM (Merged)

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