Member Since: 07 May 2018
Location: broome
Posts: 64
Diesel leak on to turbo.
Tdv6 recently started leaving 3 separate diesel patches.
Also dripping diesel on to the turbo which was smoking as a result.
Further investigation seems its coming from a black plastic cover at rear of the engine.
Cover discovered to be covering the high pressure fuel pump.
Access looks awful but before I start ripping things out for Access. (Tips welcome) if it likely pump leaking?
I live remote area, is it worth ordering a pump or is it more likely to be hoses?
Follow up, is it worth changing the belt also?
Finally wtf do I need to time it all if I replace?
Cheers in advance.
26th Jun 2020 12:19 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4651
Its more likely the plastic leak off pipes at the injectors causing the issue. It's a bit awkward to get the clips that hold the pipe into the injectors, but patience, a long nose pliers, and spare clips will sort it unless the plastic pipe itself is broken.
Pull back the black heat shielding from the injectors and clean thoroughly any visible wet areas, brake cleaner and compressed air will help a lot. Staying well away from the engine, start it for 5 or 10 seconds and then shut it off.
Wait 30 seconds and then approach the engine to see where the leak might be. You must stay well clear of the engine while doing this procedure, as if its a leak from the high pressure side it will cause serious injury to you should you come into contact with a hp jet of fuel!!
If its not coming from the leak off pipes check the low pressure (black pipes) connections and its bleeder valve. Again clean as best you can, and use paper towel to wrap any suspect areas! See how that goes and post back here what you find.yµ (idµ - eAµ) ψ=mψ
26th Jun 2020 1:27 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10363
If its not had the belt changed, then its worth doing once in its lifetime. It's a horrible job, so may as well do if its coming off.
It's not timed on the 2.7
26th Jun 2020 2:04 pm
viagression
Member Since: 07 May 2018
Location: broome
Posts: 64
Thanks team.
Injectors dry as. So leak off pipes a no go?
Long over due a service for various reasons.
Guess I'll order a belt and pump and check hoses during?
26th Jun 2020 3:12 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4651
OK so either its the lp connections/bleeder valve or, a high pressure leak. I have never personally come across a hpfp fuel pump to spring a leak but there's always a first time. If it is a leaking pump then I'm afraid it's non serviceable.
The low pressure pipes come up the D/S of the engine bay and across the top to meet the connections on the hpfp. They are easily recognisable with their blue or white release buttons. Don't start the engine, just turn on the ignition for about 30 seconds which will allow the lpfp to operate, then check the connections/pipes to see if they are dry. If they are repeat a couple more times to be certain and this should rule out any leak from the lp side.
There are two hp metal pipes which run along the back of each valve cover from the hpfp to the injector rails. DO NOT attempt to check these with the engine running or you risk serious injury to yourself.
As before clean thoroughly all connections and spillage with brake cleaner.
Try a short start for say 5 seconds and switch off, wait 30 seconds before you approach the engine again!yµ (idµ - eAµ) ψ=mψ
26th Jun 2020 3:34 pm
viagression
Member Since: 07 May 2018
Location: broome
Posts: 64
Cheers.
Sounds like some solid info.
Still concerned about access, but will research other people's experiences.
I'm thinking battery bay out?
26th Jun 2020 3:51 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10363
I have had the pump off before.
I think there are 4 bolts going down.
and need to undo a bolt for the plastic cover I think
probably need to remove the oil filter and breather thing behind it
26th Jun 2020 4:00 pm
highlands
Member Since: 11 Jan 2010
Location: NW Highlands
Posts: 5095
Obvious, but if using brake cleaner and compressed air do wear effective glasses/goggles.Black 05 TDV6 HSE Auto
Grey 05 TDV6 HSE Auto (Gone)
54 TDV6 SE Man (killed by me )
26th Jun 2020 4:07 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4651
Yes two torx bolts behind the pump and two M8 I think in front at the bottom behind the oil filter. Battery and upper box out, ecu and glow plug cables disconnected and moved out of the way. EGR crossover pipe out and clamped, lpfp lines disconnected and crank case breather out, oil filter out, and pop off the glow plug harness from the plugs.
Can't think of anything else just now but if you have got this far the rest should be fairly obvious. yµ (idµ - eAµ) ψ=mψ
26th Jun 2020 4:21 pm
viagression
Member Since: 07 May 2018
Location: broome
Posts: 64
Awesome. Thanks guys.
Will let you know how I go.
26th Jun 2020 10:40 pm
Nevesy
Member Since: 04 Oct 2016
Location: South Wales
Posts: 46
Getting the rear cover off isn't hugely difficult just be methodical in your approach.
Battery tray out as the wiring loom will need unplugging and moving out of the way. 3 clips on the cover and a wrestling match to move it out.
You can fit your hand down the back with your phone, record a video and see if you can locate the leak that way. I know it's been said already but careful with the fuel lines.
27th Jun 2020 9:17 am
viagression
Member Since: 07 May 2018
Location: broome
Posts: 64
So had a stab today.
Every thing is a complete pain!
Harnesses are out of the way mostly. Didn't realise the egr cross over contains coolant!
From all the access gained so far, it still looks to be coming from inside the black case.
The pipes with the light blue clips all seem fine.
Maybe one was a small evidence of wet but for the amount that is dripping I can't see that being the problem.
Thanks again for every one's valuable input.
The saga continues!
27th Jun 2020 9:36 am
viagression
Member Since: 07 May 2018
Location: broome
Posts: 64
Update,
There was some fuel inside the black case. Not as much as I would expect.
So I got some theory
1. Pump is leaking internally,
2. Pump gasket failed?
I'm not willing to punt the money on a new Pump until I can prove it is failing.
So I will put it all back together.
Cross my fingers it is gone lol. But if not I reckon I need to get the body off. There is simply no room to do any meaningful investigation with limited knowledge and experience of the engine.
Thoughts?
27th Jun 2020 12:35 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4651
When you say "There was some fluid inside the black case" I assume you are referring to the timing belt case? If so, is it oil or diesel?
Also, all fuel lines both high and low pressure must be bone dry of fuel. If you can get it clean your question will be answered, but you need to be patient!
I did mention in an earlier post the egr crossover pipe needs to be clamped
Consider this too, if the high pressure side had a leak its likely this would result in a pressure loss at the fuel rail, and subsequently the injectors. This would cause an immediate fault to be logged and the car would be in limp mode! This can happen for a leak on the lp side too if the hpfp is being starved of fuel, albeit to a lesser extent. Though neither scenarios are a dead cert consequence as it would depend on how big the leak is!!yµ (idµ - eAµ) ψ=mψ
27th Jun 2020 1:44 pm
viagression
Member Since: 07 May 2018
Location: broome
Posts: 64
Was diesel for sure.
Visible wet in the black plastic cover that covers the pump drive belt.
I've been told it is not a timed belt.
The pipes on top of the pump was mild evidence that been wet but some point. But the amount that's dripping out the bottom of the abseil is a fair amount. 3 separate patches. Visible and smell.
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum
) 
