Oh oh, Tdi Sounds Funny - Defender Source
Defender Source  

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


Reply
 
Thread Tools
  #1  
Old May 4th, 2008, 10:42 PM
moose's Avatar
moose
Status: Offline
Brett
Ex-Mod Tdi 110 Hard Top
Member
 
Join Date: Mar 2007
Location: Mississauga, ON Canada
Posts: 259
Registry
Oh oh, Tdi Sounds Funny

As I said in my other post, the new engine was running fine. But of course, things never seem to go as smooth as you would hope.

After a bit of test driving, it was time to head home. I had driven my Series 3 across the city to my buddies shop, so to save myself the 1.5 hours of driving to retrieve vehicles, we broke out the tow bar and I hooked the 88 to the back of the 110. I had only driven a few kms when I started to hear a ticking sound coming from the engine. I pushed on for a few minutes but the ticking was getting worse. So I wimped out and headed back to the shop.

There was no loss of power or anything else out the ordinary. I was thinking that may be the tappets needed adjusting, but I think you would normally hear that under load. This ticking is most noticeable at idle or low engine revs. Much less pronounced at higher speeds, but I suppose that could just be because it is drowned out by all the other racket.

I got back to the shop and when I popped the bonnet, the noise is quite noticeable. It seems to be coming form the area of the injector pump. May or may not be coming from the pump but it definitely coming from that side of the engine. I don't have a clue where to look here.

So, once again, anybody have any ideas what might be amiss here? I know itís hard to diagnose without hearing it, but maybe this has happened to some body before. If I donít get this engine sorted and the truck back on the road soon, SWMBO is going to start loosing patients with me!

Thanks

Brett
Attached Thumbnails
Click image for larger version

Name:	DSCN4554.jpg
Views:	128
Size:	141.7 KB
ID:	13260  
__________________
Ex-Mod 110 Tdi
Series 3 88 Diesel Soft Top
Reply With Quote
Sponsored Links
Advertisement
 
  #2  
Old May 4th, 2008, 11:46 PM
pendy's Avatar
pendy
Status: Offline
jim pendleton
89'd90
Member
 
Join Date: Oct 2003
Location: andover, ks usa
Posts: 2,341
Might have broken some of the lash caps between the adjustment arm and the valve. Be a good place to start. Crack injection lines to determine which cylinder/s are making the noise if you do not find any missing lash caps.

Sorry to hear your saga continues
__________________
legend in my own mind

Advice is only as good as the person applying it--
Don't make me give you bad advice!

Lemons or lemonaide, whatever your taste provides.
Reply With Quote
  #3  
Old May 5th, 2008, 12:03 AM
Red90's Avatar
Red90
Status: Offline
John B.
1991 Defender 90, 200TDI
Site Team
 
Join Date: Sep 2003
Location: Calgary
Posts: 9,232
Registry
Ahhh, that brings back the memories of losing a lash cap on the 2.5NA while off road.... That cylinder exhausted partially through the intake. Now that was a noise. I would think the power would be down with a lost cap, at least that is what I experienced. Quick and easy to check regardless.

Does it rev up OK?

Does it sound like pinging at all?
Reply With Quote
Sponsored Links
Advertisement
 
  #4  
Old May 5th, 2008, 05:11 AM
moose's Avatar
moose
Status: Offline
Brett
Ex-Mod Tdi 110 Hard Top
Member
 
Join Date: Mar 2007
Location: Mississauga, ON Canada
Posts: 259
Registry
Yes, my woes continue.

I have never heard the term lash caps before. Sounds like I'll belooking under the rocker cover, but at what exactly?

The engine revs fine and still has power. Towed the 88 back to my starting point just fine. That's what's weird, given that there is definetly a problem, I would have expected some sort of decrease in performance.
I am sure it's not pinging. The noice is very pronounced even at idle. Don't notice it being any louder with the engine under load.

Brett
__________________
Ex-Mod 110 Tdi
Series 3 88 Diesel Soft Top
Reply With Quote
  #5  
Old May 5th, 2008, 06:45 AM
junkyddog11's Avatar
junkyddog11
Status: Offline
oil soaked filter
95 RRC 300tdi
Member
 
Join Date: Mar 2006
Location: No. Berwick, Maine
Posts: 1,253
Had a bad vacuum pump that sounded something like that. I never figured out what was wrong with it, but the noise was clearly coming from within when listening with stethoscope .
__________________
Matt Browne


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
new expansion complete. Not only are we the only Rover shop in Eliot Maine...now we're also the biggest.

"Dedicated to the resurrection of junk through engineering?"
Reply With Quote
  #6  
Old May 5th, 2008, 09:57 AM
Pat's Avatar
Pat
Status: Offline
Patrick M.
D90 '96 300Tdi 5 speed
Member
 
Join Date: Feb 2006
Location: Denver, US
Posts: 121
I have a ticking sound on my Def coming from the same area you mention and it turned out to be the air filter bed, just moving the air filter canister the noise disappears...
Reply With Quote
  #7  
Old May 5th, 2008, 11:57 AM
Red90's Avatar
Red90
Status: Offline
John B.
1991 Defender 90, 200TDI
Site Team
 
Join Date: Sep 2003
Location: Calgary
Posts: 9,232
Registry
Quote:
Originally Posted by moose
I have never heard the term lash caps before. Sounds like I'll belooking under the rocker cover, but at what exactly?
They are little caps that sit on the valves for the rockers to run on. If I read the part catalog correctly, they were optional on the 20TDI..... Pull the valve cover, 4 bolts, a few minutes. Check the valve lash. Does not sound like the problem though. Can't hurt to check.
Reply With Quote
  #8  
Old May 5th, 2008, 10:13 PM
moose's Avatar
moose
Status: Offline
Brett
Ex-Mod Tdi 110 Hard Top
Member
 
Join Date: Mar 2007
Location: Mississauga, ON Canada
Posts: 259
Registry
It was getting late, and dark, so I couldn't stick around to investigate last night. I won't be able to get back out there for a couple days so it looks like I'll get to sit and brood for a bit.

If I can't pinpoint exactly where the noise is coming from, I will start with the valve cover off and proceed from there. Lash caps or vacuum pumps I can handle. With any luck, it is just something has come loose or there is something we forgot to tighten... but then I usually don't have that kind of luck.

You would think though that if something serious were amiss, the truck wouldn't run as well as it did.

Brett
__________________
Ex-Mod 110 Tdi
Series 3 88 Diesel Soft Top
Reply With Quote
  #9  
Old May 6th, 2008, 07:06 PM
moose's Avatar
moose
Status: Offline
Brett
Ex-Mod Tdi 110 Hard Top
Member
 
Join Date: Mar 2007
Location: Mississauga, ON Canada
Posts: 259
Registry
I was thinking Matt, if the clicking sound is coming from the vacuum pump, would that not affect the brakes? I would think it would be failing if it was starting to make noises like that. My brakes were working fine, even with the 88 pushing from behind.

If it is the pump, I have access to a spare, so the wait time for parts would be cut way down. Lash caps too for that matter.

Brett
__________________
Ex-Mod 110 Tdi
Series 3 88 Diesel Soft Top
Reply With Quote
  #10  
Old May 8th, 2008, 06:57 AM
junkyddog11's Avatar
junkyddog11
Status: Offline
oil soaked filter
95 RRC 300tdi
Member
 
Join Date: Mar 2006
Location: No. Berwick, Maine
Posts: 1,253
I had a vac pump that worked just fine, or well enough, but made a godawfull racket. I shut the truck down several times afraid that something was failing badly. Didn't effect the brakes.

I've had fuel lift pumps make a racket also, but you've replaced that right?

If youd lost a lash cap I can't imagine that it would be running very well at all..........hopefully it's just something come loose.
__________________
Matt Browne


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
new expansion complete. Not only are we the only Rover shop in Eliot Maine...now we're also the biggest.

"Dedicated to the resurrection of junk through engineering?"
Reply With Quote
  #11  
Old May 10th, 2008, 05:06 PM
moose's Avatar
moose
Status: Offline
Brett
Ex-Mod Tdi 110 Hard Top
Member
 
Join Date: Mar 2007
Location: Mississauga, ON Canada
Posts: 259
Registry
Zipped accross the city this morning for more fettling on the 110. I had fully intended on swapping out the vacuum pump as that seemed like the likeliest culprit. Didn't happen.

When I got there I fired the beast up and had another listen. I was trying to narrow the location down of the sound. While doing so I sort of realized that it wasn't really a clicking sound, more of a phf!t sound and it seemed to be coming from the top front area of the engine. So, being as careful as I could, I started poking my ears (still attached to my head) down and around the running engine. Yep, noise coming from area around the front injector. I also notice when I casually put my hand near said injector to steady myself, there were short little air blasts coming up from between the injector and the rocker cover. AH HA! Almost missed it as the air blowing off the fan sort of overpowered it.

So I proceeded to pull the front injector, thinking the sealing washer down in there must have crapped out. Well, got the washer out but they are crush washers so it was kind of hard to tell if there was anything wrong with it cause it was crushed, though it seemed to look fairly intact.

Anyway, you could see blowby around and under the injector retainer clip, so looks like I found the problem. I reinstalled the injector and fired up the truck again, just for the badness of it. This time there was a louder PHF!T sound accompanied by little blasts of smoke coming up from the injector.

Well, looks like that's cracked it. I phoned a couple diesel shops but natch nobody is open on a Sat. Will hit the one near me on the way home on Monday. They should be able to hook me up with some washers. Hopefully it is just the washer, though funny that it just sort of started leaking. Hmmm?

I may actually get this bad boy on the road one of these days.

Brett
__________________
Ex-Mod 110 Tdi
Series 3 88 Diesel Soft Top
Reply With Quote
  #12  
Old May 10th, 2008, 07:47 PM
pendy's Avatar
pendy
Status: Offline
jim pendleton
89'd90
Member
 
Join Date: Oct 2003
Location: andover, ks usa
Posts: 2,341
Thats good news.
__________________
legend in my own mind

Advice is only as good as the person applying it--
Don't make me give you bad advice!

Lemons or lemonaide, whatever your taste provides.
Reply With Quote
  #13  
Old May 10th, 2008, 08:01 PM
junkyddog11's Avatar
junkyddog11
Status: Offline
oil soaked filter
95 RRC 300tdi
Member
 
Join Date: Mar 2006
Location: No. Berwick, Maine
Posts: 1,253
I've seen the stud that for the injector retaining clip back out some, making it thard to get the injector tight.

Nice that it is no big thing though!
__________________
Matt Browne


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
new expansion complete. Not only are we the only Rover shop in Eliot Maine...now we're also the biggest.

"Dedicated to the resurrection of junk through engineering?"
Reply With Quote
Reply

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

Tags
tdi

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
Roverdrive in Tdi? JackW Defender Technical Discussions 5 March 22nd, 2006 07:55 AM
1995 SW 300 Tdi neo812 For Sale - Vehicles 6 July 31st, 2005 04:55 PM
1995 Land Rover NAS Defender 90 ST (300 Tdi) MDS For Sale - Vehicles 7 March 4th, 2005 08:55 PM
MTL prices in Mass, 300 Tdi oil artm Defender Technical Discussions 4 September 10th, 2004 11:45 AM


All times are GMT -5. The time now is 10:35 AM.


Copyright