Zafira Engine Noise

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rcwilko
Posts: 33
Joined: Sat Sep 26, 2020 1:53 pm

Zafira Engine Noise

Post by rcwilko » Tue Jan 12, 2021 2:40 pm

66PLATE
1.4 Turbo

Hello

I noticed that after running the car on idle [during de-icing], there was a strange rattle
I've taken a recording of it

A mechanic had a quick listen, and he says it sounds like the timing chain is slapping?
We had a history of p0011 faults, which were resolved with changed oil - but i had not noticed this noise before



Note: after the car was up to temperature the noise went away. And it doesnt happen on start up, but after 2 or 3 mins on idle after cold startup (when the car is idling as I am de-icing)

Do you have any thoughts on what this could be?

With many thanks

Ross

rcwilko
Posts: 33
Joined: Sat Sep 26, 2020 1:53 pm

Re: Engine Noise

Post by rcwilko » Tue Jan 12, 2021 5:00 pm

Forgot to say - although it's a Zafira
It's got the same engine as the 1.4Turbo Astra - so I believe? So thought you might be able to help

Also, there is a rattle for a second or two on cold startup - would that indicate timing chain as well?

Redman
Posts: 1218
Joined: Sat Aug 20, 2016 7:16 pm
Astra Model: Astra elite nav 150
Astra Colour: red

Re: Zafira Engine Noise

Post by Redman » Tue Jan 12, 2021 9:38 pm

That appears to be the older 1.4 turbo engine that is in the astra j.
It doesn't sound like a timing chain issue to me. Perhaps your P0011 code has not been fully resolved and the exhaust camshaft is still over advanced at start up. Was the vvt solenoid valve looked at for debris or the likes.?

rcwilko
Posts: 33
Joined: Sat Sep 26, 2020 1:53 pm

Re: Zafira Engine Noise

Post by rcwilko » Tue Jan 12, 2021 9:47 pm

Thanks Redman.

Apparently the solenoid valves were looked at were ok.

Also, when the car is started up from cold, there is a ‘half-second’ rattle. It goes away immediately.

I’ve read that this so common on the 1.6 diesel, but not sure about the 1.4 turbo.

Could this all be related?

Redman
Posts: 1218
Joined: Sat Aug 20, 2016 7:16 pm
Astra Model: Astra elite nav 150
Astra Colour: red

Re: Zafira Engine Noise

Post by Redman » Wed Jan 13, 2021 6:56 am

Not heard timing chain rattle being a big issue with that engine. I would be trying to rule out camshaft phaser(vvti) problems as that can cause rattle at start up. I purchased a cheap noise listening device, where you push a probe against the various parts of the engine to try and find the source of the noise. Obviously being vigilant with regards to moving parts and personal safety.

https://www.ebay.co.uk/itm/MECHANICS-ST ... 1460928598

rcwilko
Posts: 33
Joined: Sat Sep 26, 2020 1:53 pm

Re: Zafira Engine Noise

Post by rcwilko » Wed Jan 13, 2021 12:14 pm

Thanks Redman

Before the oil change that fixed the p0011 returning code, the engine cover (sorry I’m not technical) was taken off to inspect the chain and pulleys. Maybe something got unsettled.

I’ll get it booked into a garage.
What are your thoughts on whether I should book into a Vauxhall dealer (I’m out of warranty) or a good independent?

Also, as this only occurs after long idle. Would it be safe to assume that it’s safe to drive for now? It’s my wife’s car and she uses it to cart around the kids

Thanks again

Redman
Posts: 1218
Joined: Sat Aug 20, 2016 7:16 pm
Astra Model: Astra elite nav 150
Astra Colour: red

Re: Zafira Engine Noise

Post by Redman » Wed Jan 13, 2021 2:21 pm

Can you pull the oil dipstick out easily when the car is idling?

rcwilko
Posts: 33
Joined: Sat Sep 26, 2020 1:53 pm

Re: Zafira Engine Noise

Post by rcwilko » Wed Jan 13, 2021 5:16 pm

Thanks for the suggestion
Will check that tonight / tomorrow

Am I looking for some sort of suction on the dipstick when idling? What might that suggest?

Redman
Posts: 1218
Joined: Sat Aug 20, 2016 7:16 pm
Astra Model: Astra elite nav 150
Astra Colour: red

Re: Zafira Engine Noise

Post by Redman » Wed Jan 13, 2021 7:30 pm

Sometimes the pcv can leak and can cause problems. It may be ok

Redman
Posts: 1218
Joined: Sat Aug 20, 2016 7:16 pm
Astra Model: Astra elite nav 150
Astra Colour: red

Re: Zafira Engine Noise

Post by Redman » Thu Jan 14, 2021 12:24 pm

Redman wrote:
Tue Jan 12, 2021 9:38 pm
That appears to be the older 1.4 turbo engine that is in the astra j.
It doesn't sound like a timing chain issue to me. Perhaps your P0011 code has not been fully resolved and the exhaust camshaft is still over advanced at start up. Was the vvt solenoid valve looked at for debris or the likes.?
Just to correct myself p0011 is the inlet camshaft not the exhaust, my bad.

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