irregular ticking noise 2.5 diesel - Defender Source
Defender Source  

Go Back   Defender Source > Defender & Series Technical Discussions > Defender Technical Discussions


Reply
 
Thread Tools
  #1  
Old May 26th, 2015, 05:02 PM
DefenderMd's Avatar
DefenderMd
Status: Offline
Ben
87 defender 110 3 door
Member
 
Join Date: Sep 2014
Location: Annapolis md
Posts: 336
Registry
irregular ticking noise 2.5 diesel

I have a tick coming from the 2.5 NAD engine. I can't source it. Sounds louder from everywhere in the engine bay. I tried to use a stethoscope and couldn't locate it.

It sounds like the tick you'd get from a cooling exhaust or something, but doesn't seem to be. Goes away when the engine is shut down. I haven't noticed it when cold. Only after being on the highway.

If its sitting idling it randomly ticks. It may do it at speed, but I can't hear it.
I suppose it might be a lifter or rocker? But it doesn't quite sound like what I'd expect that to sound like. I get probably get .5 ticks per second at idle. They are all exactly the same, but irregularly spaced.

Engine is running smooth, "*strong" and smoke free.



* Strong means I can hold 50 almost anywhere and get to 65 if forced on a flat with the 1.6 tcase


Tried it now, cool. Doesnt tick.. so it must be heat related. Still don't THINK its a cool down tick. as it only happens with engine on.
Reply With Quote
Sponsored Links
Advertisement
 
  #2  
Old May 26th, 2015, 09:14 PM
1of40's Avatar
1of40
Status: Offline
1of40
NAS 97SW & 83 One Ten Tdi
Member
 
Join Date: Dec 2003
Location: Potomac Falls & Wintergreen, Virginia
Posts: 6,080
Registry
Hot spot might be letting go.
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote
  #3  
Old May 26th, 2015, 09:15 PM
DefenderMd's Avatar
DefenderMd
Status: Offline
Ben
87 defender 110 3 door
Member
 
Join Date: Sep 2014
Location: Annapolis md
Posts: 336
Registry
EEgh... I hadn't thought of that. I've never laid eyes on a hotspot really.

I could imagine it making that noise.

Now that i'm all scared of it. feel they're cheap enough to just do that. I read you generally have to mill the head afterwards to get them flush.

What holds them in. I saw something called "hot spot pin" advertised. Others say you hit the edge with a punch to peen it in there.
Reply With Quote
Sponsored Links
Advertisement
 
  #4  
Old May 26th, 2015, 09:36 PM
rdavisinva's Avatar
rdavisinva
Status: Offline
Robert Davis
N/A
Member
 
Join Date: Oct 2004
Location: USA
Posts: 6,793
Quote:
Originally Posted by 1of40 View Post
Hot spot might be letting go.
That or a valve sticking in the guide that occasionally provides excess rocker clearance.
__________________
RDavisinVA

Uncle "Richard" Douglas has a Land Rover with big wheels that never gets stuck... until he breaks something so it won't go. Uncle Douglas always breaks something. - Anna Crowther at the Conclave 2012 (AKA Carburetor Neck)

"What's with this death wobble, Uncle Douglas, I can't keep it in 1 lane?"
UD: "Just Power through it man!"
Reply With Quote
  #5  
Old May 26th, 2015, 09:37 PM
ranewman's Avatar
ranewman
Status: Offline
Rick Newman
85 Defender 110
Member
 
Join Date: Dec 2011
Location: Unionville, Va
Posts: 1,444
Take the head to a machine shop with your new hot spots. They can pin them and then plane the head.....been there...done that. They make a mess when they drop into the cylinder..... Don't ask me how I know.....
__________________
Rick
06 L322 Range Rover "The Black Pearl"
06 L322 Range Rover "2.0"
97 Disco SD "Emma" (250k and going strong)
95 P38 "Gus" RIP
99 P38 Callaway Edition #106 RIP
85 Defender 110 2.5NA "Margret"
01 D2 SE7 "Cuzn It" (blown up POS)
03 D2 SE "Fred"
Hoarder of 2.5 NAD parts
"In God we trust. Everyone else keep their fucking hands where they can be seen."
Reply With Quote
  #6  
Old May 26th, 2015, 09:41 PM
rdavisinva's Avatar
rdavisinva
Status: Offline
Robert Davis
N/A
Member
 
Join Date: Oct 2004
Location: USA
Posts: 6,793
Quote:
Originally Posted by ranewman View Post
Take the head to a machine shop with your new hot spots. They can pin them and then plane the head.....been there...done that. They make a mess when they drop into the cylinder..... Don't ask me how I know.....
Newman, I told you to give up those crab 2.5 N/A Diesels...
__________________
RDavisinVA

Uncle "Richard" Douglas has a Land Rover with big wheels that never gets stuck... until he breaks something so it won't go. Uncle Douglas always breaks something. - Anna Crowther at the Conclave 2012 (AKA Carburetor Neck)

"What's with this death wobble, Uncle Douglas, I can't keep it in 1 lane?"
UD: "Just Power through it man!"
Reply With Quote
  #7  
Old May 26th, 2015, 09:45 PM
ranewman's Avatar
ranewman
Status: Offline
Rick Newman
85 Defender 110
Member
 
Join Date: Dec 2011
Location: Unionville, Va
Posts: 1,444
Just doing my part to recycle old crap sir.....
__________________
Rick
06 L322 Range Rover "The Black Pearl"
06 L322 Range Rover "2.0"
97 Disco SD "Emma" (250k and going strong)
95 P38 "Gus" RIP
99 P38 Callaway Edition #106 RIP
85 Defender 110 2.5NA "Margret"
01 D2 SE7 "Cuzn It" (blown up POS)
03 D2 SE "Fred"
Hoarder of 2.5 NAD parts
"In God we trust. Everyone else keep their fucking hands where they can be seen."
Reply With Quote
  #8  
Old May 26th, 2015, 09:47 PM
DefenderMd's Avatar
DefenderMd
Status: Offline
Ben
87 defender 110 3 door
Member
 
Join Date: Sep 2014
Location: Annapolis md
Posts: 336
Registry
Thing with the NAD is that it cannot break the driveline.
You'd think it would get better mileage. Seems to be an otherwise sturdy lump with just enough power to get down the highway, but quite at home in town.

the hot spots/plugs cant fall into the engine unless they fracture, right? i mean, they sit on the block. i assume people mean that their hot spot falls apart and into the combustion chamber.

Anyway.. Probably worth picking up the hot spots... taking off the head, checking the valves etc.. just as a preventative. If it kills the tick, great. Doesn't look to be that big a deal.. Probably removing the exhaust manifold without breaking a stud is the toughest part.
Reply With Quote
  #9  
Old May 26th, 2015, 10:29 PM
DefenderMd's Avatar
DefenderMd
Status: Offline
Ben
87 defender 110 3 door
Member
 
Join Date: Sep 2014
Location: Annapolis md
Posts: 336
Registry
https://youtu.be/EmS-7FDgbg0
Reply With Quote
  #10  
Old May 26th, 2015, 10:42 PM
Red90's Avatar
Red90
Status: Online
John B.
1991 Defender 90, 200TDI
Site Team
 
Join Date: Sep 2003
Location: Calgary
Posts: 9,235
Registry
I doubt it is anything like a hot spot or anything serious. You are basically wasting your time asking on the internet. This is one of those things that must be found in person. I have a similar sound on my lightweight and it has been poke and prodded by a lot of knowledgeable people and we still don't know.
__________________
Pissing people off on the "net" since 1983.

Land Rover. Turning owners into mechanics since 1948.
Reply With Quote
  #11  
Old May 26th, 2015, 11:08 PM
DefenderMd's Avatar
DefenderMd
Status: Offline
Ben
87 defender 110 3 door
Member
 
Join Date: Sep 2014
Location: Annapolis md
Posts: 336
Registry
you're not wrong. But some ideas to poke at.

I knew guys in the LS2 fora that could "name that noise" in one note. in the samba, that crew can name anything about anything from any model. not really the rover world usually. brits tend to bodger. never know though.

I'm on a forum for another engineering subject where most of the time I can solve your issue before you even know how far it goes. Its not quite as complicated as an engine and all its noises though. Actually, it could be argued it is. the one thing I'm good at.
Reply With Quote
  #12  
Old May 26th, 2015, 11:13 PM
Daddymow's Avatar
Daddymow
Status: Offline
Raub A.
1987 D110 Tithonus
Member
 
Join Date: Oct 2011
Location: Stuart, FL / Boone, NC
Posts: 3,970
Registry
Don't worry about any ticking, rattling or clacking noise, just drive it till it blows up then either buy one off of Newman (he still has a half dozen or so laying around his barn) or get in touch with his wife and she will give you one for free, crate it up and pay the shipping costs.
__________________
You can't polish a turd but you can roll it in glitter - eBay.uk ad for Freelander.
Reply With Quote
  #13  
Old May 26th, 2015, 11:18 PM
Ren Ching's Avatar
Ren Ching
Status: Offline
Skinny Pete
'84 90 "Yamelo"/'88 RRC "Chewbacca"
Member
 
Join Date: Mar 2007
Location: Downtown
Posts: 4,696
Registry
Well, whatever it is, you will need to take the engine apart to make it go away. So you may as well do that and see the condition inside. Or you can follow a logical test and diagnose procedure starting with simplest and cheapest items and eventually leading to tear down if necessary.

See if you can isolate the sound to one or more cylinders. Check your compression and your injectors and pump, and send some oil off for analysis. Then, depending on the results you can pull the head and oil pan and make some inspection, etc etc.
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


Present:
1960 SII 109"- "Red Square"
1984 90 Tdi- "Yamelo"
1988 RRC- "Chewbacca"
1987 RRC- "Chewy 2"
2008 RRS SC- "The Supersofa"

Past:
1959 SII 88"- "The Little Green Beastie" last seen in NY
1972 SIII 88"- "GreenHELL" now in NC
1988 90 "Eric the Half a Bee" half a truck, sold for parts
1991 RRC- never got a name- long since recycled
Reply With Quote
  #14  
Old May 26th, 2015, 11:38 PM
DefenderMd's Avatar
DefenderMd
Status: Offline
Ben
87 defender 110 3 door
Member
 
Join Date: Sep 2014
Location: Annapolis md
Posts: 336
Registry
有用极了人情

nah... slick 50
Reply With Quote
  #15  
Old May 26th, 2015, 11:46 PM
CDNRover's Avatar
CDNRover
Status: Offline
Jeff Labbé
110 Ex-Mod FFR 200tdi
Member
 
Join Date: Jul 2007
Location: Tewkesbury,Canada
Posts: 672
Registry
Take the head off, use the same method as torquing it down, but reverse. I took the head off my 200tdi that way 3 times so far and brought it to a machine shop to check for straightness, and it was spot on. Let the engine cool down and take your time. Doesn't sound much like a hotspot (had a 2.5td with that problem). Check the injectors first and rockers/valves, might find the culprit without having to take the head off. Oil sample for analyst would greatly help but, worth chopping off the oil filter and check for particles. Not carbon! You can use a magnet to verify. Whatever it is you will soon find it out.

Good luck!
__________________
Younger, we pointed the lad I now became.
Reply With Quote
  #16  
Old May 27th, 2015, 02:06 AM
Ignotus
Status: Offline
gene
1960 109, w/200TDI
Member
 
Join Date: Sep 2012
Location: 3rd rock from the Sun
Posts: 401
Listened to the video, that is a weird one sounds like a capacitor discharge spark kinda thing. Also sounded more external than internal. Is the grumpkin properly connected to the fibbertyjibbet? ;^)
__________________
Gene
1960 109
1960 88 Ignotus
Blog;
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote
  #17  
Old May 27th, 2015, 06:47 AM
1of40's Avatar
1of40
Status: Offline
1of40
NAS 97SW & 83 One Ten Tdi
Member
 
Join Date: Dec 2003
Location: Potomac Falls & Wintergreen, Virginia
Posts: 6,080
Registry
Quote:
Originally Posted by DefenderMd View Post
Sounds very similar to what I had going on in mine a few months back. Ultimately I punted and decided not to make any additional investment in the NAD so unfortunately I'm not really certain what was wrong but from my readings of the symptoms I had lead me to think the failing hot spot was likely.
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote
  #18  
Old May 27th, 2015, 06:08 PM
DefenderMd's Avatar
DefenderMd
Status: Offline
Ben
87 defender 110 3 door
Member
 
Join Date: Sep 2014
Location: Annapolis md
Posts: 336
Registry
it does seem like that would be a most likely culprit. I still can't figure out where its coming from.
Reply With Quote
  #19  
Old May 27th, 2015, 07:33 PM
Rocky's Avatar
Rocky
Status: Offline
Chris
72 + D1 drivetrain
Member
 
Join Date: Sep 2006
Location: Colonies Aka Boston
Posts: 8,775
It's a diesel. Clank tick tock clunk clank bag o nails...
__________________
A friend of mine runs a land rover / range rover specialty repair shop. Based on his experience, they are capable of stopping anywhere, anytime, at any cost.

I don't know about the brakes, only their unreliability.
Reply With Quote
  #20  
Old May 27th, 2015, 07:41 PM
DefenderMd's Avatar
DefenderMd
Status: Offline
Ben
87 defender 110 3 door
Member
 
Join Date: Sep 2014
Location: Annapolis md
Posts: 336
Registry
Oh it doesn't have to be. It has to be loud.. but can be smooth.
Reply With Quote
Reply

Lower Navigation
Go Back   Defender Source > Defender & Series Technical Discussions > Defender Technical Discussions

Tags
diesel

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Ticking noise from steering columb or dash... Drjeggle Defender Technical Discussions 3 June 19th, 2013 06:28 AM
Ticking noise. Oil pump? ini88 Defender Technical Discussions 11 November 25th, 2009 07:12 PM
Ticking? Flagg Misc. Chit-Chat 16 March 16th, 2009 12:15 PM
AC compressor ticking artm Defender Technical Discussions 2 March 2nd, 2007 01:19 PM
Ticking noise at idle thug1313 Defender Technical Discussions 11 March 10th, 2005 11:20 AM


All times are GMT -5. The time now is 07:51 PM.


Copyright