2.7 tdv6 camshaft failure

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Rnicholson90

Rnicholson90

Active Member
Posts
89
Location
North Yorkshire
Hi I'm new on here, and I've got a 2007range rover sport 2.7 tdv6, I've got an issue with the vehicle it just cut out one day when I was driving, the engine still turns over so isn't seized but won't start!
Whilst getting someone to crank the car I looked inside the oil filler cap and i can see the camshaft turning but when it is turning I can see what looks like the camshaft lifting!!

The car has full history and has had its cambelt done 18 months ago.

I'm a mechanic by trade but I wanted some info or if anyone has heard of the camshaft failing!? The car is back where I used to live 2.5 hours away from me so before I go back and start tearing it down I'd like some Input off you guys thanks in advance
 
I've heard of the crank snapping on those, quite common apparently.
Not sure about camshaft though.
@gstuart might know more as he has a disco which is same as yours with a different frock on.
 
Hi @Rnicholson90

Sorry to hear ur having issues

Sounds like the crank has snapped , which causes the camshaft sprocket to twist and snap ur cam , have heard of that happening

May i ask was the oil pump cover replaced when the belts were done

Unfortunately it sound like the engine is toast , indeed can use the S type engine , just need to swap all the ancillaries over, inc changing the sump

Might be an idea to at least pull a cyl head off so u can see 100% what and where it’s snapped

Have also read where a top engine rebuild had been done, only for the bottom end to fail a little while later

Also handy ur a mechanic

Really interested to see if the oil pump cover had been replaced at the same time the belts were done plse, was the rear belt also replaced at the same time , inc all new tensioners

Many thks
 
gstuart said:
Hi @Rnicholson90

Sorry to hear ur having issues

Sounds like the crank has snapped , which causes the camshaft sprocket to twist and snap ur cam , have heard of that happening

May i ask was the oil pump cover replaced when the belts were done

Unfortunately it sound like the engine is toast , indeed can use the S type engine , just need to swap all the ancillaries over, inc changing the sump

Might be an idea to at least pull a cyl head off so u can see 100% what and where it’s snapped

Have also read where a top engine rebuild had been done, only for the bottom end to fail a little while later

Also handy ur a mechanic

Really interested to see if the oil pump cover had been replaced at the same time the belts were done plse, was the rear belt also replaced at the same time , inc all new tensioners

Many thks
Click to expand...

Hi thanks for your input, I can't canfirm if the pump was done, I'm pretty sure it wasn't as their isn't any mention of it in the paper work! I've bought it off a friend last year and I know the specialist who done the cambelt and they defo did both belts!

Wouldn't it make quite a racket when cranking the car over if the crank had snapped??
 
Rnicholson90 said:
Hi thanks for your input, I can't canfirm if the pump was done, I'm pretty sure it wasn't as their isn't any mention of it in the paper work! I've bought it off a friend last year and I know the specialist who done the cambelt and they defo did both belts!

Wouldn't it make quite a racket when cranking the car over if the crank had snapped??
Click to expand...

Thks for the reply and ur very welcome

Reason I asked ref the oil pump as from 2007 they suffered from weak casings which snap , is really well documented so the specialist should have known to replace it, but alas it doesn’t change of what’s happened with it

If there’s no racket I doubt the crank has snapped so u never know u might be lucky

With the oil pump cover the corner snaps off that hold the tensioner on, that basically causes top end damage , having the quad cam shafts the connecting chains are drivers side back and passenger side front

Think removing a cyl head will of course tell u a lot more and see what damage has been done

Alas a lot of issues I’m afraid where items aren’t replaced when they should have been

Few pics for u where u can see the corner broke off

9DA81B47-DB6B-4062-8861-CD099E64125A.jpeg
BE087FC4-1F6B-4F34-98B8-27B0F8953ED4.jpeg
 
gstuart said:
Pics of the reinforcement on the corner



View attachment 187615 View attachment 187616
Click to expand...
Oh I see, I didn't know that! Have you heard of the timing chains failing?
Like I said the engine turns over and doesn't make a racket but with the oil cap removed I can see the camshaft turning with the engine but when the lobe gets to making contact with the rocker/lifter it looks like the cam is lifting so it's threw me a little bit
 
Rnicholson90 said:
Oh I see, I didn't know that! Have you heard of the timing chains failing?
Like I said the engine turns over and doesn't make a racket but with the oil cap removed I can see the camshaft turning with the engine but when the lobe gets to making contact with the rocker/lifter it looks like the cam is lifting so it's threw me a little bit
Click to expand...

Hi

Yes , heard of the chains snapping, rare but indeed seen it , think the chain tensioner fails which can cause rage chain to finally snap

Alas though , with many posts , don’t normally see the final outcome of what they found

Will be interesting to see what u find plse and keep as updated
 
gstuart said:
Hi

Yes , heard of the chains snapping, rare but indeed seen it , think the chain tensioner fails which can cause rage chain to finally snap

Alas though , with many posts , don’t normally see the final outcome of what they found

Will be interesting to see what u find plse and keep as updated
Click to expand...
Oh don't worry I'll keep it all updated on here I hate reading forum post that don't have the outcome or the findings! I'm going back to my home town this weekend which is where my truck is so I'll be whipping the rocker covers of to see whats underneath
 
Rnicholson90 said:
Oh I see, I didn't know that! Have you heard of the timing chains failing?
Like I said the engine turns over and doesn't make a racket but with the oil cap removed I can see the camshaft turning with the engine but when the lobe gets to making contact with the rocker/lifter it looks like the cam is lifting so it's threw me a little bit
Click to expand...

I wouldn’t be turning it over anymore if it was mine.
Take off cam cover and check first. If it has broke a cam it may look like that (from your description)

Would the cam rotate if crankshaft was broke? Asking as I know they have belts/chains all over the place.

Good luck though

J
 
marjon said:
I wouldn’t be turning it over anymore if it was mine.
Take off cam cover and check first. If it has broke a cam it may look like that (from your description)

Would the cam rotate if crankshaft was broke? Asking as I know they have belts/chains all over the place.

Good luck though

J
Click to expand...
In my experience if the crank had snapped it wouldn't turn the cams as the drive from the starter motor is on the gearbox end of the crank and the belt to drive the cams is on the crankshaft/front of the engine I guess I'm just hoping it's not the dreaded crank saga! I've got an s type Jag with a good engine in ready if needed but I really can't be dealing with the swap
 
Rnicholson90 said:
In my experience if the crank had snapped it wouldn't turn the cams as the drive from the starter motor is on the gearbox end of the crank and the belt to drive the cams is on the crankshaft/front of the engine I guess I'm just hoping it's not the dreaded crank saga! I've got an s type Jag with a good engine in ready if needed but I really can't be dealing with the swap
Click to expand...

I would agree with that.
But doesn’t the front belt drive 1 cam and then the back chain drives second cam? Don’t know which cam you can see.
Asking not saying:)

J
 
marjon said:
I would agree with that.
But doesn’t the front belt drive 1 cam and then the back chain drives second cam? Don’t know which cam you can see.
Asking not saying:)

J
Click to expand...
Yes it does and the cam I can see turning and lifting is the one being driven from the cambelt, the other is driven by the chain but I can't see that one
 
Rnicholson90 said:
That's the plan for this weekend! It's baffled me a bit tbh! But I'm sure I'll see exactly what's happening when I strip it! Thanks for the input so far
Click to expand...

Will be very interesting , hope that’s not being horrible on the back of ur engine fault

Plus being a mechanic ur see what’s going on

If there’s any piccies of the engine or workshop manuals u need plse feel free to give me a shout , imagine you’ve got them but thought I would ask on the off chance and try and make life easier

Gary
 
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