Starter issue or timing chain tensioners going?
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Mountain Pass
Joined: Dec 2024
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Starter issue or timing chain tensioners going?
2005 f350 v10. I have noticed a very short, around half a second rattle when the truck first starts. Only when hot though. Ive never noticed it when cold maybe im missing it but im almost certain im not. Sounds like timing chain rattle but if its not doing it after it sat all night then how would it be the tensioners leaking. Any idea? Seems to happen right as the engine fires up just before i let go of the key. I dont think i would ever know it ever made this sound at all if I never hot started it within 10 minutes of shutting it down.
Last edited by Mykah knabe; Today at 07:03 AM.
Trailering
Joined: Jan 2026
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2005 f350 v10. I have noticed a very short, around half a second rattle when the truck first starts. Only when hot though. Ive never noticed it when cold maybe im missing it but im almost certain im not. Sounds like timing chain rattle but if its not doing it after it sat all night then how would it be the tensioners leaking. Any idea? Seems to happen right as the engine fires up just before i let go of the key. I dont think i would ever know it ever made this sound at all if I never hot started it within 10 minutes of shutting it down.
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Mountain Pass
Joined: Dec 2024
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Shoot i was worried it was that. It must be very early because it only happens within 10 minutes of shutting down the engine. If I wait longer, it starts without the sound. Im gonna have a shop double check it just in case its something else. Do I have a couple weeks? I mean ill try to avoid hot starts within 10 minutes of the last shut down as much as possible and I assume if I dont hear it its not actively slapping into the guides?
Last edited by Mykah knabe; Today at 12:39 PM.
Lead Driver
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As the oil cools, it builds pressure faster on the tensioners, which is why you hear the rattle when hot. It could be a sign of worn tensioners or worn engine in general (loss of overall pressure). I would replace the chains, guides, and tensioners with oem parts if you plan on having the truck for a while. It may not be your problem (it probably is), but the timing components should be done once or twice in an engines long life so it won't be a waste of money if turns out not to be the issue. If it is not the problem, then you are losing oil pressure through worn bearings.
How many miles on the engine?
How many miles on the engine?
Last edited by '89F2urd; Today at 02:14 PM.
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Mountain Pass
Joined: Dec 2024
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143k miles, maintained incredibly well. Multiple compliments from mechanics saying "someone has taken really good care of this truck". It was serviced on time at a Ford quick lane from 2005 when new up until recently where it's now maintained regularly by me and a local shop. Oil changes done every 3k, using the fl820s filter. Burns about 0.3 quarts of oil every 3k and oil stays golden for about 1k after a change. Runs great otherwise. No weird noises so far when idling or running, handles regularl 3,500 rpms well. I took a video of the sound right next to the timing cover but it's hard to hear but it's there and can upload it if needed.
Last edited by Mykah knabe; Today at 03:46 PM.
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