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Limp home - P1065 = Fuel Filter?


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#1 Grayedout

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Posted 25 February 2019 - 07:40 PM

Sudden loss of power at 3,000 rpm and then flashing glow plug light and limp home mode. Just put code reader on which says P1065 which the internet says is low fuel pressure.

To me this points first to the fuel filter which I have not yet changed on this car.

Anybody agree with my diagnosis and if so anybody recommend the best guide to changing it?

#2 Matt

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Posted 25 February 2019 - 08:14 PM

Fuel filter would be a good place to start. Make sure you put in a genuine Honda one. 

 

 http://typeaccord.co...-filter-change/ it's worth reading to the end, for the comments and discussion,  then looking here for the DIY with the pictures:

 

 https://jumpshare.co...7OnJYhyV465pCFH


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#3 edgeoftime

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Posted 25 February 2019 - 08:22 PM

https://www.mister-a...CFdLItAodcQUAbA

 

they are the cheapest make sure you get the bosch filter though, the actual job is not too difficult, the sticky bit is the 10mm set screw at the back of the holder, I threw it away on the refit, that filter will be going nowhere when put back in the holder. just squeeze the bulb until it's hard and bobs your uncle.



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Posted 25 February 2019 - 08:24 PM

Need the car for the weekend so going to have to take the day off on Wednesday to replace.  Will just go down to the local Honda dealer and pick one up as I haven't got time to wait for an online order!

 

Looked through the guide and looks okay.

 

Fingers crossed !



#5 F6HAD

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Posted 25 February 2019 - 10:16 PM

Almost always the fuel filter mate. Use a genuine one please
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#6 Grayedout

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Posted 27 February 2019 - 11:11 AM

Well that was a lot easier than expected. 10 mins to remove air box, throttle and pump bracket, socket straight onto pinch bolt, pipes off and out!

Same to re-fit and done! :)

MAHLE one fitted and now replaced with genuine Bosch so hopefully sorted.
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#7 Grayedout

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Posted 27 February 2019 - 06:37 PM

Well I spoke too soon!!

Took it for a drive, gave it a boot full and limp home mode again with same P1065 fault! :(

Is it likely to be some air in the system and will sort itself out or have I got bigger problems?

Anybody knnow if the that fault is rail pressure? Can read rail pressure via OBD so any data on what it should be?

#8 saj

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Posted 27 February 2019 - 07:03 PM

Has it been bled of air? There's a 10mm bolt on the top of the filter. Loosen that and squeeze the bulb until fuel comes out. Tighten bolt up and start car

#9 Grayedout

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Posted 27 February 2019 - 07:57 PM

Yes pumped it till fuel from outlet pipe then fitted pipe, undid the 10mm bolt and pumped again till just fuel came out.



#10 F6HAD

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Posted 27 February 2019 - 11:10 PM

Bleed it a couple more times for good measure. Should be fine
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#11 Grayedout

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Posted 28 February 2019 - 08:25 AM

Tonights plan.

 

Ran the OBD scanner on the way to work and saw a maximum of 150,000kPa which works out to 1500 bar so that's not right!!!

 

Think it's more the cheap OBD app rather that the car!



#12 edgeoftime

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Posted 28 February 2019 - 08:43 AM

Got to be this one

https://www.mister-a.../0-450-906-442/

 

if so then get a grip of the bulb forget the bleeding, squeeze until hard then start, never had a problem with that method. Good luck.



#13 Grayedout

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Posted 01 March 2019 - 10:04 PM

So bled the filter twice more and still limp home mode when pushing hard!

 

Also getting a misfire on steady light part throttle.

 

Seem to remember it doing this once before I changed the filter as well as the low fuel pressure code so could say the change has not improved anything.

 

Any other ideas on what I can check??



#14 F6HAD

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Posted 01 March 2019 - 11:04 PM

Sounds like a bad injector mate..
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Posted 02 March 2019 - 06:23 AM

All out cleaned and re-installed in the last 12 months



#16 Grayedout

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Posted 02 March 2019 - 06:45 AM

Are they coded?



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Posted 02 March 2019 - 08:20 AM

Actually thinking about it I can see how a bad injector would give uneven running but I cannot see how it would cause low fuel pressure.

 

The rail pressure is surely governed by the pump and the regulator and it doesn't care what the injectors are doing??



#18 F6HAD

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Posted 02 March 2019 - 09:41 AM

Excessive leakback will cause low fuel pressure, but it normally comes with P0087. Could also be a stuck fuel pressure relief valve on the side of the rail.

And yes they are coded but just ensure you fit the same injector back into the original port. Otherwise you’ll need access to a HDS or diagnostic tool that can code them.
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Posted 02 March 2019 - 12:13 PM

Was going to ask if anybody has any experience of the pressure regulator and do they fail?

Monitored the pressure again today using another OBD reader and that was showing close to 1500 bar as well so looks like the figures are right? Anybody know what the pressures should be?

#20 F6HAD

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Posted 02 March 2019 - 05:07 PM

You need to log it against target and check for deviation. Yes it’s quite common for the fuel pressure relief valve to fail on these. You can get them new from eBay:

https://rover.ebay.c...tm/264194643420
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