Strange rattle starting from cold

Dallas · 19th July 2016, 20:37

I have a strange rattle starting from cold on my red ZT 190, sounds like a bag of spanners

its been like this for a few months now. The rattle only lasts for about 60 seconds and then goes away, seems to be coming from top left of engine at the rear, next to the vis motors.

If I take her out everyday you dont get the rattle, but if I leave her stood up for a few days she rattles on start-up.

My ears are pointed towards the rear cam cover area, if I put my finger on the plastic cam casing cover, I can feel what seems like a rattle vibration.

Is there anything in the cam cover that can rattle when starting from cold?

Cheers guys.

Dallas · 22nd July 2016, 09:48

Bump

I would really appreciate some input, not sure if I have a serious problem or not.

Amsca2 · 22nd July 2016, 10:07

I'm not familiar with that engine but is there a tensioner in that case that could be worn. My 1.8vvc tomcat had a worn pulley that settled down once it was heated up. A worn pulley failure would be like breaking a belt. Bad news.

Dallas · 22nd July 2016, 10:17

Quote:

Originally Posted by Amsca2

I'm not familiar with that engine but is there a tensioner in that case that could be worn. My 1.8vvc tomcat had a worn pulley that settled down once it was heated up. A worn pulley failure would be like breaking a belt. Bad news.

Thanks Colin, I was thinking along those lines, its not good as you say, also going to be very expensive.

I'm sure the rattle is from behind the belt cover, seems strange the rattle disappears within 30secs once warmed up, but doesn't rattle if I take her out daily.

The belts were done only 25k ago, receipt shows Cam Belt Kit, would that include the tensioner?

murphyv310 · 1st August 2016, 07:32

Hi Wes.
Any chance of uploading a clip with the problem showing up? Could be a tensioner, tappets and even something loose. Hard one to diagnose without being there.
Good luck.

Elliott · 1st August 2016, 08:22

Not 100% on this engine but if it has hydraulic tappets sounds like its bleeding down after a couple of days non use, then re pressurizing after start up.

Sometime a good engine flush and an oil change for the correct spec can help. If not it will need new hydraulic followers.

sometimes a good long Hard drive getting the oil really nice and hot can help,.
If the engine has shims not hydraulics (someone on here will know more accurately or google it) then forget what I just said

Mike Noc · 1st August 2016, 09:13

Quote:

Originally Posted by Dallas

My ears are pointed towards the rear cam cover area, if I put my finger on the plastic cam casing cover, I can feel what seems like a rattle vibration.

Is there anything in the cam cover that can rattle when starting from cold, then goes away after 10-15 seconds?

Cheers guys.

As mentioned could be one or more tappets rattling until they fill up with oil.

If it is a single tappet then the rattle will be at half engine speed.

Dallas · 1st August 2016, 10:24

Thanks very much fella's, I really do appreciate your help. I've been out this morning and recorded the rattle from cold as suggested by Trevor. The rattle goes on for 1min 8sec and then stops, and then she sounds lovely.

It does seem like the rattle is coming from behind the cambelt cover, but I could be wrong.

Forward to 1min 8sec the rattle stops.

roverbarmy · 1st August 2016, 10:28

I had a noisy tappet on a K series 1.4 which had exactly the same symptoms. I used an engine flush and then used 5/40 instead of 10/40 oil ( it was worse in winter) - problem solved.

EDIT. Just listened/watched the video. Not a tappet! Sounds more purge valve? ??

SD1too · 1st August 2016, 10:48

Wes; I've just listened to your video as well and you should investigate that immediately. It's not tappets or the purge valve (the latter only activates when the engine isn't cold anyway).

Try placing a stout screwdriver on the alternator casing with the handle touching your ear both when tthe noise is present and when it ceases.

Quote:

Originally Posted by Dallas

My ears are pointed towards the rear cam cover area, if I put my finger on the plastic cam casing cover, I can feel what seems like a rattle vibration.

Next I would start by removing the OSF wheel and wheel arch liner to inspect the auxiliary drive belt and tensioner/idler components. After that, take off that cambelt cover for an inspection.

Simon

19th July 2016, 20:37	#1
Dallas This is my second home 1979 Capri 1.6L, 1982 Capri 1.6L, 2016 Dacia Stepway Join Date: Jun 2009 Location: Dorset Posts: 8,595 Thanks: 3,496 Thanked 3,397 Times in 2,218 Posts	Strange rattle starting from cold I have a strange rattle starting from cold on my red ZT 190, sounds like a bag of spanners its been like this for a few months now. The rattle only lasts for about 60 seconds and then goes away, seems to be coming from top left of engine at the rear, next to the vis motors. If I take her out everyday you dont get the rattle, but if I leave her stood up for a few days she rattles on start-up. My ears are pointed towards the rear cam cover area, if I put my finger on the plastic cam casing cover, I can feel what seems like a rattle vibration. Is there anything in the cam cover that can rattle when starting from cold? Cheers guys. Last edited by Dallas; 1st August 2016 at 10:26..

22nd July 2016, 10:07	#3
Amsca2 Gets stuck in MG ZT-T cdti Join Date: Aug 2015 Location: Grangemouth Posts: 521 Thanks: 60 Thanked 93 Times in 80 Posts	I'm not familiar with that engine but is there a tensioner in that case that could be worn. My 1.8vvc tomcat had a worn pulley that settled down once it was heated up. A worn pulley failure would be like breaking a belt. Bad news. __________________ The Typhoon Bull

1st August 2016, 07:32	#5
murphyv310 This is my second home Hyundai i10 998cc Join Date: Mar 2012 Location: Kilmarnock Posts: 6,602 Thanks: 2,088 Thanked 2,298 Times in 1,349 Posts	Hi Wes. Any chance of uploading a clip with the problem showing up? Could be a tensioner, tappets and even something loose. Hard one to diagnose without being there. Good luck. __________________ Cheers from Trevor MM0KJJ

1st August 2016, 08:22	#6
Elliott Loves to post Rover 75 Tourer Join Date: Nov 2015 Location: Sheerness Posts: 261 Thanks: 174 Thanked 61 Times in 50 Posts	Not 100% on this engine but if it has hydraulic tappets sounds like its bleeding down after a couple of days non use, then re pressurizing after start up. Sometime a good engine flush and an oil change for the correct spec can help. If not it will need new hydraulic followers. sometimes a good long Hard drive getting the oil really nice and hot can help,. If the engine has shims not hydraulics (someone on here will know more accurately or google it) then forget what I just said __________________ I would be so fast if I could only get going

1st August 2016, 10:24	#8
Dallas This is my second home 1979 Capri 1.6L, 1982 Capri 1.6L, 2016 Dacia Stepway Join Date: Jun 2009 Location: Dorset Posts: 8,595 Thanks: 3,496 Thanked 3,397 Times in 2,218 Posts	Thanks very much fella's, I really do appreciate your help. I've been out this morning and recorded the rattle from cold as suggested by Trevor. The rattle goes on for 1min 8sec and then stops, and then she sounds lovely. It does seem like the rattle is coming from behind the cambelt cover, but I could be wrong. Forward to 1min 8sec the rattle stops. Last edited by Dallas; 1st August 2016 at 10:28..

22nd July 2016, 09:48	#2
Dallas This is my second home 1979 Capri 1.6L, 1982 Capri 1.6L, 2016 Dacia Stepway Join Date: Jun 2009 Location: Dorset Posts: 8,595 Thanks: 3,496 Thanked 3,397 Times in 2,218 Posts	Bump I would really appreciate some input, not sure if I have a serious problem or not.

1st August 2016, 10:28	#9
roverbarmy This is my second home Roverless + 1.7D Sportage Join Date: Aug 2014 Location: East Norfolk Posts: 7,050 Thanks: 729 Thanked 2,021 Times in 1,449 Posts	I had a noisy tappet on a K series 1.4 which had exactly the same symptoms. I used an engine flush and then used 5/40 instead of 10/40 oil ( it was worse in winter) - problem solved. EDIT. Just listened/watched the video. Not a tappet! Sounds more purge valve? ?? __________________ Oil in my veins! Last edited by roverbarmy; 1st August 2016 at 10:30..