Thread: Can anyone identify this tapping noise?

Originally Posted by Pippin

Discorevy is a pro and I was asking his opinion after what he said in his post.

Sorry, I know I quoted you but my comment was just a general one really, so definitely not aimed at you in any way, but I can see why you might think that!

I know everyone here is only trying to help, but I think it would be best to get someone to physically look at it.

Originally Posted by shack

Sorry, I know I quoted you but my comment was just a general one really, so definitely not aimed at you in any way, but I can see why you might think that!

I know everyone here is only trying to help, but I think it would be best to get someone to physically look at it.

Not a problem Shack, I agree with your suggestion.

Originally Posted by Pippin

Is it a spun big end bearing do you think?

It's a fair chance Nick .

Originally Posted by ted2910

Would anyone know a good LR mechanic in QLD that could help me with this?
I don't mind putting it on a trailer and going the distance!

I guess the question is - short of finding a TDV6 guru in Gladstone or QLD - how to diagnose a big end bearing failure?

In the absence of any recommended place to take the car to, ted is working through ruling out the cheaper and easier fix potential causes.

ted- what did the LR person that josh suggested in Mackay say?

Originally Posted by ted2910

Hi All,

Just wondering if anyone can identify this new tapping noise that has appeared on my 2007 RRS 2.7 TDV6?
Doesn't sound real good to me!

Thanks

Attachment 175506Attachment 175507

To me, it sounds like it's half engine speed which will make it at the top end. Noisy lifter, lazy tensioner, etc.
I'd check oil pressure if possible, but add some engine oil flush, (Penrite or Wynns are excellent), flush oil, change oil & filter, also cutting filter to examine for debris but I doubt you'll find any.
Edit: get a stethoscope or long screwdriver (to act as a s/scope) up to your ear and try to find noise whilst engine is running. Place on valve cover/s, cyl head/s etc. You'd be surprised how much you hear and sometimes get good results!

Originally Posted by Discodicky

To me, it sounds like it's half engine speed which will make it at the top end. Noisy lifter, lazy tensioner, etc.
I'd check oil pressure if possible, but add some engine oil flush, (Penrite or Wynns are excellent), flush oil, change oil & filter, also cutting filter to examine for debris but I doubt you'll find any.
Edit: get a stethoscope or long screwdriver (to act as a s/scope) up to your ear and try to find noise whilst engine is running. Place on valve cover/s, cyl head/s etc. You'd be surprised how much you hear and sometimes get good results!

Cheers Guys,
yes I pulled both intakes off cant find anything out of the norm. Is there anything else I can do or test for while they are off?
I know the next step is taking it to someone but coming up to Christmas and I have the time I'm just sort of seeing if there is anything
obvious. I haven't spoke to the guy in Mackay yet, I'll give him a call in the new year. I've checked the oil pressure and that is good but to check the compression on these vehicles I've heard most do it through the glow plugs? is that correct or can I get an adaptor to do it through the injectors? I've heard some horror stories regarding removing the injectors! I've got a stethoscope and cant really pin point it?
maybe a little louder on the LH side.
Cheers for everyone's input, I really appreciate the help. I'm no expert but am learning a lot owning Land Rovers! i had a disco 2 before this and learnt a lot with that too! Cheers

Originally Posted by DiscoDB

I guess the question is - short of finding a TDV6 guru in Gladstone or QLD - how to diagnose a big end bearing failure?

In the absence of any recommended place to take the car to, ted is working through ruling out the cheaper and easier fix potential causes.

ted- what did the LR person that josh suggested in Mackay say?

I haven't called him as of yet,
just thought I'd try to identify anything out of the obvious before i do a big trip!

Cheers

Originally Posted by ted2910

Cheers Guys,
yes I pulled both intakes off cant find anything out of the norm. Is there anything else I can do or test for while they are off?
I know the next step is taking it to someone but coming up to Christmas and I have the time I'm just sort of seeing if there is anything
obvious. I haven't spoke to the guy in Mackay yet, I'll give him a call in the new year. I've checked the oil pressure and that is good but to check the compression on these vehicles I've heard most do it through the glow plugs? is that correct or can I get an adaptor to do it through the injectors? I've heard some horror stories regarding removing the injectors! I've got a stethoscope and cant really pin point it?
maybe a little louder on the LH side.
Cheers for everyone's input, I really appreciate the help. I'm no expert but am learning a lot owning Land Rovers! i had a disco 2 before this and learnt a lot with that too! Cheers

I thought you said you already removed the injectors? They will come out again easy enough.
Compression testing through a glow plug hole is so much easier normally, most kits would have an adaptor to go through the hole.

You won't be able to visually inspect a failed injector, it'll need to be tested correctly. You could run the car and disconnect an injector one at a time. This will isolate the cylinder with the issue. Then swap the injector to a good cylinder and see if it's the cylinder or the injector that's failed.

These injectors squirt fuel multiple times for every power stroke. The first shot of fuel is the pilot shot. It's purpose is not to go bang but to raise cylinder temps and pressures for the main shot.. as injectors wear. They don't close correctly between the pilot and main and over fuel.. That fuel goes"bang" before top dead centre and causes diesel knock. In bad cases it'll crack a piston in half. It can sound metallic as it causes the engine to try and counter rotate.