Noise

[RobD]

A noise has developed on my 3rd gen.It starts when the engine reaches just below 2,500rpm and can only be described as a "light rapid rattle",this noise is definately revs related as it gets faster the higher the revs get,could it be something to do with the turbo?Maybe a blown turbo manifold gasket?Hope someone can shed some light,the vehicle is still under warranty(just).Cheers.

[vinnie]

sounds to me like the shims for the valve clearances have worn and needs re-shimming

[RobD]

Forgot to mention the mileage.........64,000,would the shims be worn at this mileage?How long would "reshimming" take if this was the problem?

[Elvz]

Depends how organised you are. The actual job takes an hour BUT you need the shim removal tool, feeler gauges, and the bit that takes the time - new shims with the correct thickness. (Order from Toyota; wait a week or so; try shims; order another couple of shims, wait etc etc)

[RobD]

Had the bonnet up this morning,noticed black residue around the port nearest the front on the right hand side of engine block(turbo manifold?)and what looks like a fine spray over the radiator fan cover,looks like a blown gasket to me,but I am NO expert.Would this make that sort of noise(very light rapid rattle@2,400rpm or above)?

[rich]

It would if the oli was now low due to the leak.

Had the bonnet up this morning,noticed black residue around the port nearest the front on the right hand side of engine block(turbo manifold?)and what looks like a fine spray over the radiator fan cover,looks like a blown gasket to me,but I am NO expert.Would this make that sort of noise(very light rapid rattle@2,400rpm or above)?

[RobD]

It would if the oli was now low due to the leak.

Cheers Rich,what's the recommended grade of engine oil for a 3.0Ltr?

[rich]

I think this got answered elsewhere but the general consensus from what I have read over the time I've been on the forum is 10W40 semi-synthetic (Best of both worlds!)

[RobD]

I think this got answered elsewhere but the general consensus from what I have read over the time I've been on the forum is 10W40 semi-synthetic (Best of both worlds!)

Cheers bud.

[RobD]

Oil levels ok,most prob a blown gasket(?)

[Guest]

Oil levels ok,most prob a blown gasket(?)

Maybe the inlet manifold gasket. If that was the case and the blow is bad enough (sounds like it) then you would definately get some sort of noise as you will be running most likely very rich on that cylinder as the intake air pressure will be considerably lower.

I'd get the manifold off and check, if it is gone then get a new gasket, check the face of the manifold for flatness and if OK then put the new gasket on with some hermetite.

Hopefully will make a big difference.

Cheers

[RobD]

Maybe the inlet manifold gasket. If that was the case and the blow is bad enough (sounds like it) then you would definately get some sort of noise as you will be running most likely very rich on that cylinder as the intake air pressure will be considerably lower.

I'd get the manifold off and check, if it is gone then get a new gasket, check the face of the manifold for flatness and if OK then put the new gasket on with some hermetite.

Hopefully will make a big difference.

Cheers

Cheers Andy
will it harm the engine running it this way(hopefully no long term damage has been done)?

[Guest]

Cheers Andy
will it harm the engine running it this way(hopefully no long term damage has been done)?

I don't think so, Generally you are more liokely to do do damage if running too lean (certainly on petrol engines as the cylinder temp gets much higher).

I would do it as soon as possible though if this is the problem, if the leak is bad you may find that you burn the face of the head where it meets the inlet manifold or the manifold itself. I have seen them so bad that resurfacing of them would need to be too radical to be feasible.

Cheers

[RobD]

I don't think so, Generally you are more liokely to do do damage if running too lean (certainly on petrol engines as the cylinder temp gets much higher).

I would do it as soon as possible though if this is the problem, if the leak is bad you may find that you burn the face of the head where it meets the inlet manifold or the manifold itself. I have seen them so bad that resurfacing of them would need to be too radical to be feasible.

Cheers

Can an underlying problem with the engine or turbo cause a gasket to blow?

[Guest]

Can an underlying problem with the engine or turbo cause a gasket to blow?

Not generally for the inlet gaskets, more likely to be carbon build up forcing it's way under the gasket or a loose bolt that over time has allowed it to happen. Other than that overhating can do it by warping the face.

Cheers