URGENT Help needed please

[SteveP]

We have a car on our ring trip running this fault: -

16471/P0087/000135 - Fuel Rail/System Pressure: Too Low

It's pulling back the power above 4000rpm at higher speed.

Any ideas??

A quick bit of logging following the guide on Ross Tech wiki shows the requested pressure isn't being meet about 4k rpm by upto 10bar.

[G4V VW]

Not much help but same fault code on another vehicle on another forum was HPFP faulty!!

[Hurdy]

Cam follower is the obvious one (and easiest to eliminate as a cause)

The more worn it is the higher the failure to reach requested rail pressure.

Stock fuel pump or HPFP? - could be the pump failing.

How is everything else? idle okay? Misfires?

[PDT]

Need to know the following:

Engine type
mods
post the logs up ( or email them to me at: sales@pdtuning.com)

[G4V VW]

Try this steve, read poverty's post >http://www.mk5golfgti.co.uk/forum/index.php/topic,9196.msg189073.html#msg189073

[SteveP]

It's a normal GTI with a stock pump running with Stage 2 code.

K&N panel in standard airbox.

Will check the follower first thing  

[SteveP]

Logs on the way PDT 

[PDT]

No log arrived?

[SteveP]

Should be now 

[PDT]

Got the logs but dont show much, I have replied by email with some tips on logging and what I need to graph them correctly. Once I get them through I will check them over and send a reply to you 

[SteveP]

Thanks David 

[danishmkvgti]

could be the sensor sitting on the side of the hpfp, known fault and apr recommended me changing it as part of error elimination.

[SteveP]

A quick test with a known good working low pressure fuel sensor "appears" to have remove the fault, so a replacement is currently being collected.

[danishmkvgti]

A quick test with a known good working low pressure fuel sensor "appears" to have remove the fault, so a replacement is currently being collected.

they one on the hpfp?? 

[Nick S]

Interested to know the results of this mine is doing the same