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Author Topic: Knocking/rattle when off throttle  (Read 810 times)
keyL200
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« on: 06 August, 2019, 19:41:01 PM »

Hi everyone.

Got an knocking/rattle coming from the truck when its fully warmed up and off throttle. Does it in every gear, neutral, but not when i engage the clutch or throttle on under load. There's nothing worn or loose externally, the noise is def internal coming from the bellhousing/oil sump area. Now i'm thinking this is either gearbox or bottom end, but I just can't pin point it.

Checked oil pressure, perfectly fine idle and driving. Here's a video of the noise.

https://youtu.be/T5RS8wLSDtk

Any ideas? Some people have said its the gearbox layshaft bearing.


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rodeast24
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« Reply #1 on: 09 August, 2019, 10:38:38 AM »

The clutch pesuure plate bearing rattles and is quite normal mine has done it for years, if you depress the clutch does it go away. looking at your video I am thinking big end play on the over run but I would get a second or third opinion, if it is the case do it as soon as as it will fail big time if you leave it
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barnstormer
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« Reply #2 on: 15 August, 2019, 14:58:23 PM »

Big ends usually knock on load - not rattle on the overrun off load. If the noise is coming from the bellhousing it could be the dpf.
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keyL200
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« Reply #3 on: 26 August, 2019, 19:59:50 PM »

Thanks for replies guys. So def think its either big ends, or someone suggested a gudgeon pin connecting the piston to conrod. Think i might take the engine out to diagnose. Budget is tight so not sure if i can rebuild it.
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2004 Warrior Double Cab
135,000 Miles
Black
K&N Air Filter
EGR Blanked
Bigger Radiator
Decat
Bigger Intercooler Fan
Manual Locking Hubs
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