Potential HPFP issue

Maintenance/Repairs
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Dashboard Lights
Dashboard Lights1920×1440 425 KB

My car began jerking on a slight incline. I later tested it while avoiding hills and heavy acceleration. It drove mostly normally, although I may have felt one mild jerk. The dashboard warning lights remained on, but I was able to drive the car about 8 miles home.

The OBD reader gave me code P0087 I understand that I may be able to check the in-tank pump by putting the ignition in the ON position without starting the engine and listening near the rear seat for a brief humming sound. I have also been researching how to safely depressurize the fuel system if the high-pressure pump needs replacement.

The car has also had an oil leak, possibly from the valve-cover gasket, for two or three years, although that may be unrelated.

Does this diagnosis and testing process sound reasonable? Is there anything else I should check before replacing a fuel pump? I have previously replaced brakes, calipers, rotors, a radiator, and an alternator, so I am comfortable doing repairs when I have clear instructions.

Any recommendations would be greatly appreciated. Thank you

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Why did you make another thread about the same issue ?

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Just listening for the hum won’t tell you if you have enough fuel pressure from the low pressure fuel pump. You need a pressure gauge and fittings to attach and measure it.

As for the HPFP, with the engine shut off, there isn’t a huge residual pressure. A wrench on the HP fitting and a shop rag wrapped around the whole thing a couple of times should be enough. Once you crack the seal, the pressure will drop very quickly. And you need something to catch the fuel anyway.

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Maybe you missed this the 1st go around, I will post the link to it for you…

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Label on box said
Pump made in Thailand.
All other parts made in USA.
Woohoo

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I think it’s an issue with the forum’s software. When I was posting, I got several errors and I didn’t see anything posted, so I redid the posting and that’s why a ‘repeat’ is being seen. It took me several tries posting this due to the error I was getting. Thank you.

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Will there be a lot of fuel coming out?
BTW, I practiced my car skills by changing the valve cover gaskets recently and all worked out nicely. Next task is the High Pressure Fuel Pump :slight_smile: There won’t be debris flying around when I unscrew the HPFP, right? :smiley: Also, anything special I need to do when I install the new one? I’m installing a cheap one I purchased… this is for testing purposes. Once I see all issues gone, I will spend the $500+ on the Honda HPFF and will have gotten more experience installing/uninstalling a HPFF :smiley:

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Not a lot of fuel.

Not sure what may fly out… Assume there is a spring or pushrod under it, not sure if there is but be ready IF there is so you don’t lose it.

Nothing special except a gasket or O-ring… My Audi had an O-ring. A little oil on the O-ring before you install it, don’t leave it dry.

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Have you watched any youtubes that show how to replace it?