Disco 1 my discovery 1 (1995) 2.0 mpi ticking noise..

[Junoh]

hello, I recently bought a car in south korea and I'm so stressed out.

current driving distance is 130,000 km

1. During cold start, it sounds similar to tappet noise.

2. If drive for about 20 minutes, the sound becomes quiet.

3. It sounds like it's coming from the top of the engine or it's like it's coming from oil pan

4. There is no sound when you step on the accelerator. It only makes sound during a stop.

5. I contacted the former car owners and asked them, and they said they heard this sound 7~8 years ago.

6. This car had engine overhaul 4~5 years ago.


[I've done this repair]

1. exhaust manifold gasket + bold (There was no crack, so I only replaced the gasket and bolt)
2. exhaust catalyst
3. engine + trans mission mount
4. high viscosity engine oil, LIQUI MOLY valve lifter additive



If anyone has resolved this noise, please help...

thank you..

 

[kermit_rr]

What was the cause of the sound previously?
I'm not 100% sure on the cause, does it smoke? Could be little end rattle

 

[Junoh]

What was the cause of the sound previously?
I'm not 100% sure on the cause, does it smoke? Could be little end rattle

previous owners also sold it without finding the cause. not smoke~

 

[Stanleysteamer]

Does it have hydraulic lifters? I think it is without finding very clear info on this, If so this is quite common and nothing much to worry about,
If so, you need to isolate which one it is and change it or maybe service it if you can. (Use a stethoscope or put the end of a long screwdriver onto the valve cover and move it along while having the other end to an ear, You should be able to tell a bit more accurately which one it is. )
Sticking valves are a known fault on these and are a more serious problem but these manifest themselves by misfiring.
Allegedly you can get oil additives which can reduce sticking lifter problems, and also don't use too think an oil, to help with avoiding sticking valves.

I have now listened to your vid and it does sound like more than a sticky lifter, maybe a cam lobe is worn?

The fact it goes quiet after 20 mins driving does imply sticky lifter though.

To diagnose a worn cam lobe, if it isn't visually obvious, then you'll need a dial test indicator and patience to measure the lift each cam lobe gives and see if one is well below the others.

 

[marjon]

Does it have hydraulic lifters?

Yes it does

2. If drive for about 20 minutes, the sound becomes quiet.

Still there but quiet, or gone?

4. high viscosity engine oil,

What spec? why not replace with what should go in?

Why was the engine rebuilt? and was the noise there after that or has it just reappeared?

My little "mudball" has more klms on it and is still original engine (as far as I know) But has had a bit of TLC, it dont tap like that.

J

 

[Stanleysteamer]

Yes it does



Still there but quiet, or gone?


What spec? why not replace with what should go in?

Why was the engine rebuilt? and was the noise there after that or has it just reappeared?

My little "mudball" has more klms on it and is still original engine (as far as I know) But has had a bit of TLC, it dont tap like that.

J

That seems a pretty extreme rattle to me all the same. Does yours rattle like that?

 

[marjon]

That seems a pretty extreme rattle to me all the same. Does yours rattle like that?

It seems a little on the loud side to me aswell.
No our little mudball sounds ok, well nothing that I would concern myself with.

J