After replacing the accessory belt and idler/tensioner pulleys, this Ford Duratec HE developed an annoying knock or rattle under certain revs and loads. It's difficult to tell by ear whether a knock is coming from within the engine, or if it's maybe a bad pulley.
You can disconnect the belt from the crankshaft and run the engine safely for a short time, to identify if the engine is making the noise without the belt and pulleys being turned.
More on the belt & pulleys ~
* Replacing the belt & idler/tensioner: • How to: Change auxilia...
* More on the belt tensioner: • Auxiliary belt tension...
* Water pump: • How to (fail): (Nearly...
* Over-running alternator pulley (OAP): • How to: Test & replace...
Amazon links for the Duratec HE (check your part no.s):
* Serpentine belts & pulleys ~ US: amzn.to/2Gugnmh | UK: amzn.to/2GLgt8o
* 6PK2225 as featured ~ US: amzn.to/2TNQpNC | UK: amzn.to/2tpyl0v
* Idler as featured ~ US: amzn.to/2BCt0aW | UK: amzn.to/2IgAQg6
* Tensioner featured (Continental # 49405): amzn.to/2VFScG2
* More tensioners ~ US: amzn.to/2S6gW6R | UK: amzn.to/2SFdgy6
* Water pump ~ amzn.to/2XLTdfC
* Or, for generic pumps the Ford part # is 1142427 ~ US: amzn.to/2ZCqbAS | UK: amzn.to/2W5qSAE
* Alternator over-run pulley, try searching ~ US: amzn.to/2lvN0H6 | UK: amzn.to/2lvSVfr
More detailed links for tools etc are in the specific videos above.
Using the above links helps support my channel and is appreciated!
Негізгі бет Engine knock & rattle: accessory belt pulleys or engine internals?
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