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2020 1.0 ecoboost newer chain driven, enging noise when cold


Option 4
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Hi I have a 1.0lt ecoboost 2020 Puma Titanium with 20000 miles on, its the newer chain driven engine, I was wondering if anybody else has the same problem as me. It has a rattleing or tingling noise when starting from cold, it lasts for about 25 seconds then goes, any advice will be appreciated.


Tthis is the video sound below

https://clipchamp.com/watch/VGS0S6boroW

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8 hours ago, Option 4 said:

Hi I have a 1.0lt ecoboost 2020 Puma

Your profile says it's a 2023 model ?

2023.JPG

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My new(ish 4000 miles) cam chain version 1.0L Ecoboost has always made a few clattery/tappity noises when cold - particularly so in those freezing spells last winter. After a mile it has quietened down.

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14 hours ago, unofix said:

Your profile says it's a 2023 model ?

2023.JPG

Opps, sorry slip of the finger , ive corrected it now 2020

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  • 3 weeks later...

On a similar theme, I have a 2020 puma hybrid with 20,000 miles on the clock. Couple of months ago it started a tapping/rattle but only when the engine is at normal temperature. Ford tech department say it鈥檚 normal but I鈥檓 not sure, why is it only a recent thing?

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4 hours ago, Ianhende said:

On a similar theme, I have a 2020 puma hybrid with 20,000 miles on the clock. Couple of months ago it started a tapping/rattle but only when the engine is at normal temperature. Ford tech department say it鈥檚 normal but I鈥檓 not sure, why is it only a recent thing?

Has the oil & filter been changed recently?聽 If it's contaminated with petrol from short, cold runs and GPF regens then it may be a bit thin towards the end of the 2 year servicing schedule, which would show up more when the oil is warm.

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  • 2 weeks later...

What year did these engines go from wet belts to chains. My engine code is BZJA

Thanks in advance聽

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It varies, all MHEV are chain. Some later non MHEV are chain, most are belt but that seems to be pot luck as Ford seemed to fit whatever engine they had on hand for some models. If your turbo is at the front it's belt, at the back it's chain.

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11 hours ago, wilto said:

What year did these engines go from wet belts to chains. My engine code is BZJA

BZJA is a 155 MHEV chain cam.

All the current model Puma are chain, as is the Mk 4 Focus. As Andrew mentions, the Fiesta is more complicated - the chain cam was phased in from mid 2020, but some versions with the 100ps engine seem to have remained wet belt.

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Thanks guys, I've "heard" some horror stories about the belt drives.

What sort of maintenance schedule is there for the timing chain?

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27 minutes ago, wilto said:

What sort of maintenance schedule is there for the timing chain?

None for the chain.

Auxiliary belt on the MHEV is recommended every 4 years or 72k.

oil pump belt is recommended every 10 years or 144k.

oil & filter change is every 2 years or 18k.聽

Spark plugs & air filter are every 4 years or 36k.

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