2.7 tdv6 won't go after fuel system repair

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Originally Posted by shack

Brad, did you plug into the wiring at the pump or hook in somewhere else a bit easier to access?

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No, I used the wiring at the pump. On mine the PCV was the issue, and that's the easy one to get at. From memory I used a couple of small croc clips to get at the pins in the socket.

Mine wasn't stopping it starting though, mine was an issue where the valve would stick on a slow open so a gentle request for "more power" would result in an error. I just wanted to exercise the valve with "extreme prejudice" to see if there was something sticky I could knock loose.

Having said that, if the valve is jammed you won't see an increase in fuel pressure while cranking. If it's stuck it won't go "click" when you hit it with 12V. This is a pretty brutal thing to do but in my case I was up for a new HPFP anyway so I had nothing to lose. It didn't make it any worse and it did improve things for a couple of hundred k's.

Something you could try which is easy and no cost, is to disconnect the battery for 30 minutes. Computer might be confused, showing a lot of error messages.
If that doesn't fix it, then a diesel mechanic who is familiar with LR?

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Originally Posted by fredd63

Something you could try which is easy and no cost, is to disconnect the battery for 30 minutes. Computer might be confused, showing a lot of error messages.
If that doesn't fix it, then a diesel mechanic who is familiar with LR?

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Thanks for the idea, I've already had the battery out a couple of times overnight, so that's a no go either.

I've eliminated all other possible faults, so next week a new HPFP will be going in, depending on my other work, patience levels.

I was also told by an LR indie that they have had the diesels come in for a service, had a fuel filter change and they don't go again until the HPFP is replaced, so I'd say that's what I'm looking at, I'd say either the VCV or PCV died.

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Originally Posted by shack

Thanks for the idea, I've already had the battery out a couple of times overnight, so that's a no go either.

I've eliminated all other possible faults, so next week a new HPFP will be going in, depending on my other work, patience levels.

I was also told by an LR indie that they have had the diesels come in for a service, had a fuel filter change and they don't go again until the HPFP is replaced, so I'd say that's what I'm looking at, I'd say either the VCV or PCV died.

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That would be explained by contamination damaging the HPFP. This is why I’m not a fan over changing filters etc. each time you crack open a sealed system like that, you risk contamination.
Good luck

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Originally Posted by shack

I've eliminated all other possible faults, so next week a new HPFP will be going in, depending on my other work, patience levels.

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Go and watch Shanes video (in the what did you do today thread) on changing the oil cooler for info on how to get the oil separator out. I found it the most challenging part of the job. The rest is just methodical.

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Originally Posted by BradC

Go and watch Shanes video (in the what did you do today thread) on changing the oil cooler for info on how to get the oil separator out. I found it the most challenging part of the job. The rest is just methodical.

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Thanks for that, I've already changed most of that on the other car, it was a delight! I think by the experience I had, they start building the car with either the turbo, the A/C compressor, or the oil separator.

Finally got a chance today, changed the pump, started straight away.

I'm guessing one of the valves let go.

It's a bit distressing that it can fail just like that TBH.

As I already did the rear belt on it, and oil cooler on another car, I already have the appropriate amount of bone fractures, and late onset adult triple jointedness and Environment Triggered Tourette's that are required to do the job.

Not much fun, but the thought of it was probably worse than the reality.

Mechanics are definitely underpaid.

I'm now looking for the spanners that randomly flew out of the shed.

Cheers
James

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Originally Posted by shack

Finally got a chance today, changed the pump, started straight away.

I'm guessing one of the valves let go.

It's a bit distressing that it can fail just like that TBH.

As I already did the rear belt on it, and oil cooler on another car, I already have the appropriate amount of bone fractures, and late onset adult triple jointedness and Environment Triggered Tourette's that are required to do the job.

Not much fun, but the thought of it was probably worse than the reality.

Mechanics are definitely underpaid.

I'm now looking for the spanners that randomly flew out of the shed.

Cheers
James

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This is a great result. Your right. The thought is much worse, I did the 3.0l rear belt when the kids were toddlers and the Mrs had a broken toe. Took me days.. Mainly just rechecking every bolt 18 times.

Would hate to do the pump at the same time.

Well done Gunga din, you are a braver soul than I! Besides my hands and fingers are not as nimble as they once were.

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Originally Posted by PeterOZ

Well done Gunga din, you are a braver soul than I! Besides my hands and fingers are not as nimble as they once were.

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Thanks, glad it's done now I can tell you!

Here's a selection of perverse and slightly unusual tools some won't have that I used..https://uploads.tapatalk-cdn.com/202...79d29f92e5.jpg