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N54 HPFP operation and failure reasons
Рет қаралды 6,952
Күн бұрынHere is my theory on how the HPFP works (based on my observations) and the two different reasons the pumps can fail.
@nprzz5947 6 ай бұрын
Glad i found this vid… my 535 n54 ran perfect out of nowhere started dying. Scanned it got 88psi lpfp and read the same on hpfp… i bought an amazon hpfp having similar issue going to try a more expensive one tomorrow.. I have new lpfp New low pressure sensor New plugs and coils I only get codes regarding low fuel pressure on the high side
@turbospool 11 ай бұрын
excellent video and very detailed explanations! Thank you!!!
@jasondominguez8434 Жыл бұрын
I had to replace mine, found one on a crashed mini at the junk yard for $25 & works perfectly
@mrlarrybobjr Жыл бұрын
Ok cool. Now give me the model of mini/ and part number cross reference ASAP and for everybody else.
@Joneseys 11 ай бұрын
I’ve been having a lpfp pressure issue lately start up would be 64 psi and as car warms lpfp pressure drops to around 50 ish psi at operating temp. Last night on a drive my rail pressure dropped to lpfp pressure abruptly and here I am just a weird issue unsure if both issues are related but my rail pressure was normal 700 psi at idle around 2500 on a hard pull.
@DarkePeak 11 ай бұрын
When my first pump failed (internal seal failure) it was like that - it seemed to work ok intermittently. But it got progressively worse until the rail pressure was low all the time.
@mta3562 Жыл бұрын
Man, bad luck there, these pump are expensive, wonder something else cost it to failed.
@Kwstakis90 Жыл бұрын
mixture control 1 & 2 together and pressure plausibility , i replaced lpfp and filter and still got the codes popping , you believe i should try to replace Hpfp also ?
@mrlarrybobjr Жыл бұрын
Yes, it’s very expensive part.
@frankpaul3204 3 ай бұрын
This is a similar setup as a pressure washer pump
@bmwn54_cb67 Жыл бұрын
That’s crazy never seen this before so what’s are going do send them back?
@DarkePeak Жыл бұрын
Yes, the new one is under warranty
@mrlarrybobjr Жыл бұрын
We need an update dude.
@jackantoun2216 3 ай бұрын
Do you think the seals can be replaced?
@DarkePeak 3 ай бұрын
Yes, but it’s a complicated process that needs to be done in an oil bath
@jackantoun2216 3 ай бұрын
@@DarkePeak i hope one day you can make it and share it with us. Thank you for your videos!
@mrlarrybobjr Жыл бұрын
You would think it would idle fine with 6000ish hPa from the low pump but yeah it won’t even idle correct.
@mta3562 Жыл бұрын
You check this code using obd2 scanner?
@mrlarrybobjr Жыл бұрын
Yes. Which scanner he used I have no idea.
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