Will not start is it the fuel pump or regulator?

Hi,

If the fuses and relay are working and power reaches the pump, the pump is the problem. By chance, do you notice it prime when you first turn the key on?

As far as the regulator, that wouldn't prevent pressure. If it fails, the fuel pressure would do the opposite. It would be too high.

The fuel pump module contains the fuel pump, the fuel pressure regulator, and the fuel sender assembly. The fuel pressure regulator is attached to the FP module and regulates the pressure of the fuel supplied to the fuel injectors. This is in the fuel tank. I attached a pic below and highlighted the location of the regulator.

Let me know if this helps.

Take care,

joe

See pic below.

Hi,

The fuel system really isn't affected by air simply because once pressure is supplied, the injectors allow the air to bleed off. In this case, it sounds like the pump is bad.

The good news is you don't need to remove the fuel tank to replace the pump. There is a service port under the rear seat.

I attached the directions below for replacing the pump. Note: One section of the directions indicates draining the tank. That isn't necessary because you aren't removing the tank, so just ignore that part.

In addition, here is a link that explains, in general, how one is replaced. I actually find it more helpful than the manual. LOL But, the manual is specific to your vehicle.

https://www.2carpros.com/articles/how-to-replace-an-electric-fuel-pump

Let me know if this helps or if you have questions.

Take care,

Joe

See pics below.

Hi,

You are very welcome. I hope it helps. I look forward to hearing the outcome.

Take care,

Joe

Hi,

I need to start over. We need to determine if there is spark and fuel to the engine. Do this and let me know the results.

First, see if the engine starts with starting fluid. If it does and then stalls, we know it is a fuel-related issue. If there is no change, I need you to check for an ignition spark at the plugs.

Here is a link that explains how that is done:

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

Let me know what you find. Also, if you could record it cranking and upload it for me to hear, it may help.

Take care,

Joe

Hi,

Listening to the video, it doesn't sound like a compression or timing issue. If you have spark, fuel, compression, and the correct timing, it has no choice but to run. We are missing something simple. If you remove the spark plugs after trying to start it, are they wet with fuel?

Let me know.

Joe

Hi,

If the plugs are dry, fuel isn't getting into the engine. I attached a pic below of the injectors. Each injector will have a white wire with a blue tracer. That wire (on any of the injector connector) should have battery voltage with the key in the run or start position. I need you to check that for me.

If it does, select the other wire at the injector which is what provides a ground via the PCM to complete the circuit and inject fuel. So, if the white/blue wire has power, we need to make sure there is a ground.

Take your test light and connect the alligator clip to the battery-positive terminal. Then, probe the ground wire at the connector with the test light. Have a helper crank the engine. When the engine is cranking, the test light should strobe on and off.

Let me know what you find. Keep in mind, this doesn't explain why starting fluid doesn't work, but you said there is spark at the plugs. If we find there is spark and the injectors are working, we need to check compression and timing. That is all that is left.

Let me know.

Take care,

Joe

See pic below.