Loud tapping noise in my new T5 !!!!

[Chopster]

That's deffo a hydraulic tappet with an oil starvation problem, I can understand why everyone has said just throw a set of lifters in and it should sort it (I'd have said exactly the same) but as you've gone down that road and it's now exactly the same you have to find out why the lifters aren't getting the oil they need.
I gather the only time they shut up (for a short time) is just after you've changed the oil?

I'd personally be in a bit of a dilemma whether or not it's worth picking up a known good second hand head (you'll easily get one for £150) and just throwing that on, or you can go down the hope this'll sort it route... ie whip the cams and lifters back out and blast an air line down all the oil ways would be one of the first things I'd have to try.

[SKIDMARKS]

Agree with chopster, did you inspect the old lifters for wear ? If someone has flushed, it may have dislodged some **** that is still present. Some may agree that it's ok to disturb the crap inside but it's only one piece is all it takes.

[glmotors]

worked on these t5 engines for many years in my workshops. Normally tappets noisy after being stood unused for some time. I would try an engine flush and drain oil when nice and hot. Try 0/40 Mobil oil. If no improvement wynns hydraulic valve treatment, have had good success on k series rovers with it. Dont be afraid and take it for a good hard thrash. if no improvement you will need to replace all tappets as lengthy strip down so no point in changing a few as you wont know which is the noisy ones.

[RT MECHANICS]

Merry Christmas everyone...

Here is an update on my cars loud tapping noise.

The head was removed and had the lifters, valves and valvegear renewed - so the head is basically new. The oilpan was taken of to inspect main bearings etc. and everything there looked like new.

No changes what so ever.......still £££££££g loud!

So two hours ago, we put on a oil preassure gauge, and the pressure as such was fine - warm at 33 psi at idle and 74 psi at 4000 rpm....but at idle the pressure was unstable - +/- 5-7 psi.

My question is, is that enough to indicate, that the oilpump is drawing air in together with the oil - ie. Oil pump O-ring faulty ?????????

I think it does, but I would like to have some second opinions, before it split the pan again

Sorry to say it does sound like a bent rod to me when the oil pan was off did you inspect the conrod webs to see it they are in contact with the crank as this is how it can show i doubt its lifters but one question to ask is are they brand new lifters ?????????

Russ

[chrjen]

Yes, the lifters are all brand new. The whole heads internals are brand new parts.
The work has been carried out by a very skilled volvo mechanic - but he has NEVER heard this sound before.

Russ have you ever changed these o ring bacause of variable oil pressure ??

Look and listedn to the following, which is an american t5 which was 100% cured with the oil pump o-ring fix. I think it sounds VERY similar to mine:
http://s195.photobucket.com/albums/z...t=MVI_3813.mp4

[RT MECHANICS]

Yes, the lifters are all brand new. The whole heads internals are brand new parts.
The work has been carried out by a very skilled volvo mechanic - but he has NEVER heard this sound before.

Russ have you ever changed these o ring bacause of variable oil pressure ??

Look and listedn to the following, which is an american t5 which was 100% cured with the oil pump o-ring fix. I think it sounds VERY similar to mine:
http://s195.photobucket.com/albums/z...t=MVI_3813.mp4

Hi Chrjen

Nice to know you have used new parts at least you can hopefully discount them being the problem what i would do next is do a leak down test (its easy to do i am sure your mech has the kit) as this will tell you for sure if a lifter is stuck or not.

The O ring failure has been seen before (did your mech use new o rings if he had the oil pan off ?? also do double check your conrod/crank bearings for wear if the oil pressure is to low.

I did once have a t5 in with a similar noise and the volvo dealer had told the guy it was lifters (Only ever seen two cars with worn out lifters) i took of the sump to look at the conrod bearings and one of the shells was cracked in half !!!!!!!!!!!!

The noise on the above vid sounds different to yours but they can do on a vid !! yours sounds more of a thumping sound and like its missing an cylinder..

Did he check the webs on the crank for damage ??

Russ

[Chopster]

I'll leave RT to help you out with this one as he's the Volvo specialist but out of curiosity did the noise go away for a short time after an oil change?

[chrjen]

My mechanic has been doing 5-cyl. volvo's since 1992 - so his knowledge about these engines is massive, but he has never hear of the o ring problems. He says that the sound is following the rpm of the engine / cams.
No he didn't use new o rings, as he has never heard of this problem before.
Leak down has been done - no leaks at all.
Crank bearing / shells looked like new as well.
I know vids do make the sounds differ, but I think this vid sounds EXACTLY as mine does...
Unfortunately I live in Denmark, so Russ is not an option to me, But living in a high car tax country, the expertise on these t5 engine is not that high.

[RT MECHANICS]

My mechanic has been doing 5-cyl. volvo's since 1992 - so his knowledge about these engines is massive, but he has never hear of the o ring problems. He says that the sound is following the rpm of the engine / cams.
No he didn't use new o rings, as he has never heard of this problem before.
Leak down has been done - no leaks at all.
Crank bearing / shells looked like new as well.
I know vids do make the sounds differ, but I think this vid sounds EXACTLY as mine does...
Unfortunately I live in Denmark, so Russ is not an option to me, But living in a high car tax country, the expertise on these t5 engine is not that high.

Hi The o ring problem is mainly on the P2 cars for some reason if he did not use new seals i would replace them straight away (this will not sure the noise though but while he is there check closely the crank webs i still think its a bent rod is the car standard ???

I am sure you guy can solve it

Russ

[chrjen]

Hi Russ.

Funny thing is, that here in europe, the o ring problem is pretty uncommon, but in the US it is very common. I have found most info about it "over there". The vids of the silver v70 above was 100% cured by the o ring fix.

Yes my car is 100% standard - actually the only turbo volvo i have ever had which isn't modified....

[SAMXPJ]

As the noise continues at higher revs than idle when the oil pressure is 33psi rising to 74psi at 4000rpm I would think it is not an oil pump problem. It is years since a stripped a t5 engine but is there an external oil pressure feed pipe to the cam shafts that could possible be blocked ?