Rattle on start up

[crowman350]

Been here before,,, 2020 Mustang GT manual 37k miles Quite a nasty rattle on start up to the point when I like to turn the engine over on the stater motor before it starts to get the oil pressure up then there is no rattle ..So the problem is oil pressure related,,.If being thoughtful it sounds chain tensioner related as for sure its top end noise ,,,(but I dont want to go down a rabbit hole without reason)The noise goes as soon as pressure is up but if left for a couple of hours will return on start up albeit not as loud
Do these Gen 3 coyote engines have issues in the Mustang and are there any recalls from Ford

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[K4fxd]

Does sound like a chain tensioner. They use oil pressure to tension the chain. If it is the fix is to use the Boss 302 tensioners. They have a ratchet that holds tension without oil pressure.

 

[crowman350]

Does sound like a chain tensioner. They use oil pressure to tension the chain. If it is the fix is to use the Boss 302 tensioners. They have a ratchet that holds tension without oil pressure.

thank you for that I am fairly sure your right and will upgrade with the 302 ones cheers

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