Noisy tappets

donc · 6th October 2020, 21:29

my 1.8t has developed noisy tappets. Any ideas on the cause and cure? An oil additive has made no difference. Performance doesn't seem to be affected.

COLVERT · 6th October 2020, 22:49

Quote:

Originally Posted by donc

my 1.8t has developed noisy tappets. Any ideas on the cause and cure? An oil additive has made no difference. Performance doesn't seem to be affected.

The additive probably won't help but normally an oil change cures it.

SD1too · 7th October 2020, 07:41

Quote:

Originally Posted by donc

Any ideas on the cause and cure?

Hello Don,

The cause is contaminated oil. The cure (as Colvert says) is to change the oil more frequently. If this doesn't work, drain the oil and use Comma Flush Out according to the manufacturer's instructions.

Simon

T-Cut · 7th October 2020, 12:15

Quote:

Originally Posted by donc

my 1.8t has developed noisy tappets. Any ideas on the cause and cure? An oil additive has made no difference. Performance doesn't seem to be affected.

Are you sure it's not the canister recycle system doing its clattery thing? iF so, the culprit is the purge valve/solenoid mounted on the battery box wall.

TC

donc · 7th October 2020, 20:20

thanks all for the ideas. It is due and oil change anyway and it might also stop a bit of smoke when accelerating!

DMGRS · 8th October 2020, 17:29

It won't affect performance - it's just a bit of lash causing the noise, because a tappet is seized and not adjusting correctly.

You can remove them and tap them on a plank of wood to pop the little piston out - if they're seized solid they may need replacing (but they're cheap enough - we have them).

donc · 8th October 2020, 20:57

does that mean the head off then?

trikey · 8th October 2020, 21:01

Quote:

Originally Posted by donc

does that mean the head off then?

No, but you will have to take the cams out.

SD1too · 9th October 2020, 07:38

Quote:

Originally Posted by donc

does that mean the head off then?

Quote:

Originally Posted by trikey

No, but you will have to take the cams out.

Don,

Please have another look at posts 2 and 3. All that is required for hydraulic tappet noise is one (or two in severe cases) applications of Comma Flush Out flushing oil. I've used it with 100 % success on several occasions and on my Rover V8 I didn't have to renew a single tappet over 170,000 miles.

You don't need to take your engine to pieces and you don't need to buy new parts.

Simon

thanos.m · 9th October 2020, 08:08

Quote:

Originally Posted by SD1too

Don,

Please have another look at posts 2 and 3. All that is required for hydraulic tappet noise is one (or two in severe cases) applications of Comma Flush Out flushing oil. I've used it with 100 % success on several occasions and on my Rover V8 I didn't have to renew a single tappet over 170,000 miles.

You don't need to take your engine to pieces and you don't need to buy new parts.

Simon

Exactly that, just follow what Simon says I was fighting noisy tappets for a while on my v6 i thought my tappets were going a couple oil changes and some seafoam (essentially engine flush) and then some good quality 10-40 oil like castrol GTX or any of your preference and they will go quiet

6th October 2020, 21:29	#1
donc Avid contributor Rover 75 Join Date: Sep 2018 Location: Kirk Ella Posts: 141 Thanks: 9 Thanked 43 Times in 14 Posts	Noisy tappets my 1.8t has developed noisy tappets. Any ideas on the cause and cure? An oil additive has made no difference. Performance doesn't seem to be affected.

7th October 2020, 20:20	#5
donc Avid contributor Rover 75 Join Date: Sep 2018 Location: Kirk Ella Posts: 141 Thanks: 9 Thanked 43 Times in 14 Posts	Noisy tappets thanks all for the ideas. It is due and oil change anyway and it might also stop a bit of smoke when accelerating!

8th October 2020, 17:29	#6
DMGRS Discount MG Rover Spares Rover 75 CDTi, 2x MG ZS180 Join Date: Jun 2011 Location: Hythe, Southampton Posts: 11,320 Thanks: 456 Thanked 3,377 Times in 2,027 Posts	It won't affect performance - it's just a bit of lash causing the noise, because a tappet is seized and not adjusting correctly. You can remove them and tap them on a plank of wood to pop the little piston out - if they're seized solid they may need replacing (but they're cheap enough - we have them). __________________ Your trusted MG Rover specialist! Tel: 02380 001133 / Email: [email protected] We now have a 'chat' function on our site for even quicker replies. Give it a try! Remember - discount code FORUM5 for 5% off

8th October 2020, 20:57	#7
donc Avid contributor Rover 75 Join Date: Sep 2018 Location: Kirk Ella Posts: 141 Thanks: 9 Thanked 43 Times in 14 Posts	Noisy tappets does that mean the head off then?