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Will not start

Tiny
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I don't understand how spraying starting fluid in the throttle doesn't do anything, maybe because the plugs were fouled.
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Wednesday, December 29th, 2021 AT 5:46 PM
Tiny
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See my last post above and let me know.

Joe
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Wednesday, December 29th, 2021 AT 5:59 PM
Tiny
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Oh, sorry I missed that. Will check it tomorrow, so the regulator is the part with the harness on the hofp?
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Wednesday, December 29th, 2021 AT 6:30 PM
Tiny
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It sounds like the plugs are getting soaked. That is the likely cause of the starting fluid not working. And yes, it is on the HPFP.

Joe
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+1
Wednesday, December 29th, 2021 AT 7:20 PM
Tiny
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I also checked spark on one of the plugs and it is there. I will check the fuel rail pressure and see.
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Saturday, January 1st, 2022 AT 7:02 AM
Tiny
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Disconnected the wire to the rail sensor and it started a bit longer than before it shut off. Now here are the values again while ignition is on.
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Saturday, January 1st, 2022 AT 7:20 AM
Tiny
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While starting. Can the cam follower if worn out cause this low value or that has no effect on it?
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Saturday, January 1st, 2022 AT 7:22 AM
Tiny
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And I assume we are talking about this sensor on top of the hpfp correct?
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Saturday, January 1st, 2022 AT 7:26 AM
Tiny
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I also checked the relays in the plum e-box, switched them around, no change.
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Saturday, January 1st, 2022 AT 8:45 AM
Tiny
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Yes, to the sensor. If I'm reading the scanner correctly (when cranking) it's showing 5.1670 MPa (megapascal) correct? That works out to nearly 750psi. At idle, I would expect that to be lower. See pic 1 (435 PSI at idle).

Looking at the first pic you provided, it is showing the HPFP 5.1670 MPa and 2.9 PSI below that. I'm not familiar with your scan tool. If the engine isn't running, I don't understand why the HPFP would be that high and the (2.9 psi) which I think is the supply pump, to be so low.

Please let me know if I am reading that correctly. The HPFP is a mechanical pump, so I would expect that to be low without it running.

Let me know.

Joe
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Saturday, January 1st, 2022 AT 8:57 PM
Tiny
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I used my Maxisys this time. There are so many fuel numbers and I always get confused. But car always start, at least for a second, only in the am. I suspect the hpfp/sensor, or the cam follower
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Sunday, January 2nd, 2022 AT 7:48 AM
Tiny
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Hi,

I can't see the actual readings/values when cranking. If the plugs are soaked, my first thought is the HPFP sensor.

Let me know.

Joe
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Sunday, January 2nd, 2022 AT 5:46 PM
Tiny
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Changed the pump with the sensor, same results, ugh. I took some videos not sure if any numbers would make sense to you. All taken while starting. The only thing would be to replace plugs, but I doubt faulty plugs wouldn't let the car run at all.
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Wednesday, January 5th, 2022 AT 1:56 PM
Tiny
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Hi,

When I try reading the scanner, it is sideways, and I see no numbers. Your pics above show it normally but upside down. I'm not aware of what readings/values you are seeing.

As always, check to make sure that the plugs are getting spark and let me know what happens with starting fluid.

Joe
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Wednesday, January 5th, 2022 AT 5:25 PM
Tiny
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I checked the spark, and it was there. I will check again. I will try fluid again as well. I just took pictures of the scanner numbers from the video and turned them up right. All these are while engine was turning.
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Wednesday, January 5th, 2022 AT 5:44 PM
Tiny
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In pic 3, it shows 1.45 PSI. Is that the supply pump? If it is, take a look through the pics below. That should be over 50 PSI.

Also, please understand not being there with you makes this difficult for me. If I repeat a check, let me know.

Let me know about the pressure in pic 3.

Take care,

Joe

See pics below.
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Wednesday, January 5th, 2022 AT 5:57 PM
Tiny
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Yes, I know diagnosing behind a screen is difficult. I don't mind checking again. Wouldn't that mean that it maybe the fuel pump not pushing enough? I will need to check there as well I guess, but there is fuel when I removed the hpfp, but maybe not enough. Cam follower is also good. And with regards to the number and since there are so many fuel numbers that is why I am confused. This one in picture 3 for example just says fuel pressure. Very confusing to have so many fuel numbers you know.
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Wednesday, January 5th, 2022 AT 6:14 PM
Tiny
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Picture you sent is for fuel pump, I guess. Not sure I will have the right fittings to measure pressure there.
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Wednesday, January 5th, 2022 AT 6:17 PM
Tiny
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Hi,

I totally agree. Today's cars have too much of everything. LOL As far as the pressure in pic 3, I am assuming that is from the lift/supply pump because all others indicate HPFP. I looked through the specs and from what I'm reading, it should be over 50 PSI. It indicates pressure in bar, 3.5 - 6 bar. That works out from 50 PSI to 87 PSI. If the 1.45 PSI is correct, that is equal to just under 0.1 bar.

Let me know.

Joe
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Wednesday, January 5th, 2022 AT 7:16 PM
Tiny
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So, I decided to remove the back seat and check the fuel pump. First, is t there supposed to be a feed and a return line? I only see one. I hear the pump when the harness is connected and I don't when the harness is off. Removed the fuel line and very little cane out. Left the line off and turned the ignition on, none came out even though there is some gurgling sound. Is this normal?
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Thursday, January 6th, 2022 AT 8:33 AM

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