2.5 Diesel - Loud Metallic Chriping at Low RPMS - Defender Source
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  #1  
Old October 29th, 2015, 12:00 PM
Sam1
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2.5 Diesel - Loud Metallic Chriping at Low RPMS

Proud owner of a newly acquires 110 Tith Soft top. All stock. Hearing a very disturbing loud metallic chirping at low RPMS. Worst at cold start, subsides at higher RPMS most of the time, will go away when engine is warmed up, but will also come back one in awhile when fully warmed up. In gear, out of gear, clutch depressed or not. Sounds like it's coming from the engine. Fearing the worst but want to rule out other potential issues.

Any input appreciated.
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  #2  
Old October 29th, 2015, 12:47 PM
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You might buy an automotive stethoscope and poke around until you can narrow down where the noise is most likely coming from. Unfortunately there is as many things it could be as there are opinions of what it can be. You might search the UK forums as well to see if anyone has the same description. Mine was the opposite, find when cold then tapping/popping after things warmed up.
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Old October 29th, 2015, 12:56 PM
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Impossible to diagnose over the internet. My first stop would be to pull the valve cover (5 minutes) and check the valve lash.
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Old October 29th, 2015, 01:22 PM
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Thanks for the input. I may need to get a stethoscope and poke around some more.


Will pull the valve cover this weekend as well.
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Old October 29th, 2015, 01:37 PM
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Quote:
Originally Posted by Sam1 View Post
Thanks for the input. I may need to get a stethoscope and poke around some more. Will pull the valve cover this weekend as well.
Might pick up a $15 feeler gauge set as well and check the valve clearances. The process is simple and something you want to figure out anyway as a proud NA owner.
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Old October 29th, 2015, 01:48 PM
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Quote:
Originally Posted by Sam1 View Post
Hearing a very disturbing loud metallic chirping at low RPMS.
If you have a cell phone, you can post audio and/or video.
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Old October 29th, 2015, 01:58 PM
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Originally Posted by Red90 View Post
Impossible to diagnose over the internet. My first stop would be to pull the valve cover (5 minutes) and check the valve lash.
Exactly.
It could be anything.

Worked on a 110 once with similar sounds that were caused by the belhousing bolts coming loose inside, then getting jammed near the flywheel that scraped them and made a loud chirping.
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Old October 29th, 2015, 02:27 PM
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Quote:
Originally Posted by Sam1 View Post
Proud owner of a newly acquires 110 Tith Soft top. All stock. Hearing a very disturbing loud metallic chirping at low RPMS. Worst at cold start, subsides at higher RPMS most of the time, will go away when engine is warmed up, but will also come back one in awhile when fully warmed up. In gear, out of gear, clutch depressed or not. Sounds like it's coming from the engine. Fearing the worst but want to rule out other potential issues.

Any input appreciated.
loose belt would be most common and most likely ... even properly adjusted belts can chirp if worn. Spraying water on a squeaking belt will take the noise away until it dries out ... for testing purposes!
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  #9  
Old October 29th, 2015, 02:37 PM
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Will snag a video of the sound this weekend... all helpful information as well to start digging.
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  #10  
Old October 29th, 2015, 02:48 PM
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Water pump? Mine sounded pretty rattly/screechy when it went
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  #11  
Old October 29th, 2015, 03:09 PM
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Water pump? Mine sounded pretty rattly/screechy when it went
I like that suggestion. Mine made erratic screeches until it finally seized...
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  #12  
Old October 29th, 2015, 03:26 PM
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I would say go ahead and pull that worthless turd of a motor out and replace it with a 200Tdi drive train (and throw in power steering while you are at it ) The sound will go away and you will be a much much much happier person.
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  #13  
Old October 31st, 2015, 06:49 AM
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Just one more suggestion. My ex mod 110 had worn out fan cowl bushings, one of them broke off and at a certain rpm the fan would rattle against the housing. Very unnerving sound coming from an engine but ended up easy fix
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  #14  
Old November 9th, 2015, 09:53 AM
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Was the belt... simple fix. Thanks for all the input!
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