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Author Topic: [SOLVED] Fuel rail pressure too low. Advice please.  (Read 8136 times)

Offline kam760

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[SOLVED] Fuel rail pressure too low. Advice please.
« on: January 20, 2020, 05:40:30 pm »
Hi all,

Picked up an edition 30 off a previous forum member over 6 months ago. Was previously at stage 2, but before he sold to me it was flashed to revo stage 1 back with a standard hpfp at 80k miles. Cam follower was changed 5-6k miles ago. Fuel injectors, seals, fuel filter and decoke done at 60k miles 3 years ago.

Had the EPC light and limp mode come on (the same day the clutch master cylinder was changed...coincidence?) whilst accelerating so i pulled over and didnt drive it anymore. Next day i started it and the EPC light was gone, regardless I booked it into a VW specialist and didn't drive it.

They said codes P0087 (fuel system rail pressure too low) and p2292 (fuell pressure regulator 2 control circuit) flagged up - but they weren't sure of the relevance. They advised to clear the codes and for me to drive it around over the next few days and if it happens again to call them, they'll send off the injectors to be tested in Birmingham. Driven it twice since - short journeys, and just now come on again.

I plan to take a look a the cam follower this week myself, i'm not quite sure what the garage have done but it seems not much. Any advice on what else to check or just in general?

Ta
« Last Edit: February 04, 2020, 04:08:52 am by kam760 »
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Offline Dazmul

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Re: Fuel rail pressure too low. Advice please.
« Reply #1 on: January 21, 2020, 05:03:50 pm »
Start off with the cheap to fix stuff, fuel filter and low pressure fuel pump in the tank, standard hpfp should be okay and don’t think the cam follower would cause low rail pressure.
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Offline bacillus

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Re: Fuel rail pressure too low. Advice please.
« Reply #2 on: January 21, 2020, 09:17:53 pm »
check this article http://wiki.ross-tech.com/wiki/index.php/16471/P0087/000135
My gut feeling is you need a new Fuel Pressure Sensor (G410). It's screwed into the hpfp and easy to change yourself. Check  the  cam follower and cam lobe before though.
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Offline kam760

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Re: Fuel rail pressure too low. Advice please.
« Reply #3 on: February 02, 2020, 08:58:05 pm »
UPDATE:

After I wasn't happy with (supposedly one of the best) garage's just "resetting the light".

Followed advice above. Can follower looked good but I changed it anyway. Noticed the HPFP sensor on the too was cracked and welded together probably from the previous owner. Bought a new fuel pump OEM and also a new PCV (as it looked like it had oil leaking from there)

Engine light has now gone off, drive it all day today with no recurrence of the light!  :jumpmove:
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