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1.5 tdci low pressure to high help

Featured Replies

  • Author
7 hours ago, Alan G H said:

It might be worth contacting Costco and asking if they have had other complaints (but they probably would not admit that). Might be worth putting something out on local social media, asking if anyone else has had problems as well.

It might be worth getting a fuel sample analysed if you can find somewhere to do it.

Hi mate I did contact Costco the day after break down asking if they had had any complaints about diesel said no straight away and was able to print out a paper for the last 7 days all about the fuel with no water contamination in it at all he every time some one goes in it gets logged down on system and not had body in for over a month and that was somebody put wrong fuel in showed me dates and times of everything so not there diesel thanks 



  • Author
15 hours ago, Alan G H said:

It might be worth contacting Costco and asking if they have had other complaints (but they probably would not admit that). Might be worth putting something out on local social media, asking if anyone else has had problems as well.

It might be worth getting a fuel sample analysed if you can find somewhere to do it.

I did go to Costco and they showed  me b a print out of last 7 days fuel lines said they have alarms on them if any water at all Is found at all it’s sits the pumps down straight and every complaint or anything reported gets logged shown me a book and said nothing has been reported for over a month and that was someone had put wrong fuel in their car 

  • Author

Yet another update with no joy so we got round to changing the high pressure pump all timed up again all 3 pins put in place taken out turned 2 full turns checked again timing spot on turned over with cranking it no high pressure fuel coming from pump I have been reading loads of post and come across a post on a Reno website about a low pressure fuel problem and he was working on it for 2 years (I hope not) any way too cut along story short it turned out to be his ecu faulty something wasn’t turning on and he put a 2nd hand ecu in had it programmed and turned the key and started straight up any ideas on this please getting on for 3—4 weeks this problem now it is as thou something is just not turning something on to start the engine 

I getting really fed with this car now 

I am sorry the HP pump didn't fix it. :sad: 

Does the low pressure pump still prime ok when you turn the key? 

Have you manually bled any air from the rail by cracking off an injector nut?  (Should self-bleed on these, but only does that by the injectors opening which we know isn't happening at the moment)

If the low pressure pump works then that will deliver fuel to the HP pump.  The HP pump is entirely mechanical, so that can't be affected by the ECU.  The only part that could be affected is the fuel pressure regulator.  I guess it's possible that the ECU control of the FPR is damaged in some way without affecting anything else, but I've never heard of that before.  You would have to be incredibly unlucky for that to be the case.  If you want to test that, I would recommend sending the ECU to an electronics testing company (often done by re-mappers) to have it checked over for any electronic faults before going to the effort of installing and programming a new one.

  • Author
On 10/18/2024 at 9:53 AM, TomsFocus said:

I am sorry the HP pump didn't fix it. :sad: 

Does the low pressure pump still prime ok when you turn the key? 

Have you manually bled any air from the rail by cracking off an injector nut?  (Should self-bleed on these, but only does that by the injectors opening which we know isn't happening at the moment)

If the low pressure pump works then that will deliver fuel to the HP pump.  The HP pump is entirely mechanical, so that can't be affected by the ECU.  The only part that could be affected is the fuel pressure regulator.  I guess it's possible that the ECU control of the FPR is damaged in some way without affecting anything else, but I've never heard of that before.  You would have to be incredibly unlucky for that to be the case.  If you want to test that, I would recommend sending the ECU to an electronics testing company (often done by re-mappers) to have it checked over for any electronic faults before going to the effort of installing and programming a new one.

The only reason I am saying could be ecu is the car is a cat n car was damaged that side where it is located which was repaired when I bought it in 2020 had 4 years and with us looking over the car we noticed that all the engine ecu housing was smashed and broke so it has been sort of getting open to the weather just below the head light inside inner wing passenger side brother says looks to have had water getting on it and also I read the post that took the guy 2 years to fix his car and turned out to be ecu on his 

but brother on holiday for a week 

also now when turning over it will only turn over for about 5 seconds then stop on its own have we ***** the starter motor up or is the brains of car saying it’s not doing something right ? 
I am getting really fed up with this car 

the pump we fitted was off eBay so that also could be a faulty pump or broke I think it going to have to go in fords if not found anything in next week or 2 I will post another update when have one thanks for reading 

  • 2 weeks later...
  • Author
On 10/18/2024 at 9:53 AM, TomsFocus said:

I am sorry the HP pump didn't fix it. :sad: 

Does the low pressure pump still prime ok when you turn the key? 

Have you manually bled any air from the rail by cracking off an injector nut?  (Should self-bleed on these, but only does that by the injectors opening which we know isn't happening at the moment)

If the low pressure pump works then that will deliver fuel to the HP pump.  The HP pump is entirely mechanical, so that can't be affected by the ECU.  The only part that could be affected is the fuel pressure regulator.  I guess it's possible that the ECU control of the FPR is damaged in some way without affecting anything else, but I've never heard of that before.  You would have to be incredibly unlucky for that to be the case.  If you want to test that, I would recommend sending the ECU to an electronics testing company (often done by re-mappers) to have it checked over for any electronic faults before going to the effort of installing and programming a new one.

Is there a way to test injectors when off the car they look ok condition I still think something is just not turning the injectors on for them to fire 

5 minutes ago, Ian livsey said:

Is there a way to test injectors when off the car they look ok condition I still think something is just not turning the injectors on for them to fire 

No DIY test.  Diesel specialists have professional bench test rigs setup but they charge quite a lot for injector testing now.

Can you remove the ECU to have that tested?  I wasn't expecting that to be at fault but as you say there was crash damage in that area on this particular car then it could be that at fault.

 

  • Author
1 hour ago, TomsFocus said:

No DIY test.  Diesel specialists have professional bench test rigs setup but they charge quite a lot for injector testing now.

Can you remove the ECU to have that tested?  I wasn't expecting that to be at fault but as you say there was crash damage in that area on this particular car then it could be that at fault.

 

We got fuel at all the injectors but it is just running back to the return to tank we took them out and look to be in good condition very clean every so often we get a fault in pic but clear it do another scan it goes we think it is when battery gets low I having no luck with my car it been off road now a month we definitely think something is not turning the injectors on to start the car when it 1st broke the traction control light come and started running like it was running out of diesel

IMG_3485.jpeg

IMG_3484.jpeg

That code isn't particularly helpful unfortunately.  Just means the cluster (speedo clocks) are losing communication at some point.  If it's only happening after a few failed starts, it's probably the result of the failed starts, not the cause.

The ECU is the thing that turns injectors on.  But it will only do that when sensors report that the engine is turning over quickly enough and there is enough fuel pressure in the rail.

  • Author
3 hours ago, TomsFocus said:

That code isn't particularly helpful unfortunately.  Just means the cluster (speedo clocks) are losing communication at some point.  If it's only happening after a few failed starts, it's probably the result of the failed starts, not the cause.

The ECU is the thing that turns injectors on.  But it will only do that when sensors report that the engine is turning over quickly enough and there is enough fuel pressure in the rail.

Reading another post yesterday with very similar thing to mine and injectors in the end sorted his out will put a set in and get back with results doing my head in now 

  • Author
On 11/2/2024 at 9:27 AM, TomsFocus said:

That code isn't particularly helpful unfortunately.  Just means the cluster (speedo clocks) are losing communication at some point.  If it's only happening after a few failed starts, it's probably the result of the failed starts, not the cause.

The ECU is the thing that turns injectors on.  But it will only do that when sensors report that the engine is turning over quickly enough and there is enough fuel pressure in the rail.

Update on todays work done I have bought a set of injectors not fitted yet the tank has come off for cleaning and loads of fillings inside tank and black floating bits dunno what they are look like spiders web  but all diesel is out of car now tank cleaned nearly ready to go back on after cleaning the pipes from back to front going to run brake cleaner through on a pump and then run fresh diesel through replace new filter with another new 1 just to be safe 

my question is how can I clean out all pipes to the injectors and from fuel pump  to rail upto the injectors very hard to get at common rail I really hope this is now getting closer to a fix will update tomorrow if I get chance to go and do afew hours thanks everybody who is and has helped 

will do another update when been back too it hopefully tomorrow 

You can flush the rail in situ after you disconnect the old injectors.  Force fresh diesel in from the hard pipe at the pump.  Then cover 3 injector pipes at a time with your fingers which will force diesel out through the open pipe.  Not the easiest procedure but it should work.

I'm not sure what the black bits are in the tank.

Make sure to replace your fuel filter also after going through all that trouble. I changed mine when the injectors were fitted 

  • Author
2 hours ago, TomsFocus said:

You can flush the rail in situ after you disconnect the old injectors.  Force fresh diesel in from the hard pipe at the pump.  Then cover 3 injector pipes at a time with your fingers which will force diesel out through the open pipe.  Not the easiest procedure but it should work.

I'm not sure what the black bits are in the tank.

That’s what I was hoping you would say everything is just so hard to get at took tank of all gether man that was a job on its own thanks Ian 

  • Author
1 hour ago, Renegade- said:

Make sure to replace your fuel filter also after going through all that trouble. I changed mine when the injectors were fitted 

Yes fuel was 1st thing we did but a new on is going in after last bit of flushing pipes did yours start off key or do u have to drag it round some people are saying have to drag them after pump being fitted some times even on newer cars thanks Ian 

  • Author
On 11/5/2024 at 9:30 AM, TomsFocus said:

You can flush the rail in situ after you disconnect the old injectors.  Force fresh diesel in from the hard pipe at the pump.  Then cover 3 injector pipes at a time with your fingers which will force diesel out through the open pipe.  Not the easiest procedure but it should work.

I'm not sure what the black bits are in the tank.

FIXED update I would just like to say thank you very much for your time and help reading the post I put up we cleaned everything all the way from tank too all injectors al pipes cleaned  filter out another new one fitted now put the new injectors would still not start up then we programmed the new injectors with computer and started up 2 try not been started in over a month just need take out for road test now bit late tonight up for work tomorrow thanks again to everybody who has read post and give input most of all brother in law for doing all work couldn’t have done with him 

  • Author
On 11/5/2024 at 10:14 AM, Renegade- said:

Make sure to replace your fuel filter also after going through all that trouble. I changed mine when the injectors were fitted 

fIXED cleaned everything out and put injectors in programmed in to car then started up well made up got my car back thanks for your input and putting your post up helped a lot reading through it cheers man 

On 11/6/2024 at 11:32 PM, Ian livsey said:

fIXED cleaned everything out and put injectors in programmed in to car then started up well made up got my car back thanks for your input and putting your post up helped a lot reading through it cheers man 

Brilliant I am glad you got your car back on the road and that my fault helped you out. My car has been ok did get a blip today but have since put new fuel in and ordered some seafoam codes wiped and it's driving spot on 

  • Author
14 hours ago, Renegade- said:

Brilliant I am glad you got your car back on the road and that my fault helped you out. My car has been ok did get a blip today but have since put new fuel in and ordered some seafoam codes wiped and it's driving spot on 

What are seafoam codes did they take the tank off and clean all the fuel pipes lines and everything out only asking because we did and there was a lot of metal fillings in the tank hope yours is ok and stays ok what was the blip like a misfire 

I have not drove mine yet has only swapping the insurance back over this week has had just filled the car we bought up with diesel so using that then going back to my focus 

58 minutes ago, Ian livsey said:

What are seafoam codes

This is an example of the confusion that can be caused by a lack of punctuation, as practised by you!

He meant he's ordered some Seafoam (whatever that is - presumably some sort of cleaning product) and had the DTC's cleared.

7 minutes ago, mjt said:

the confusion that can be caused by a lack of punctuation,

I'm not sure he needs a puncture as well 🤣

Just off to the beach now with my bucket and spade, going to get some Seafoam 👍

On 11/9/2024 at 4:43 PM, unofix said:

I'm not sure he needs a puncture as well 🤣

Just off to the beach now with my bucket and spade, going to get some Seafoam 👍

Sorry guys using the phone to reply when I get a sec. Yes Seafoam is a product and this one is to keep the injectors system clean. The blip I mentioned was a slight misfire which brought up a yellow spanner light but fortunately I was near the garage at the time so they checked the codes all fuel pressure related. New fuel put in codes wiped. Seafoam added to fuel no issues since. All the best 👍 

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