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- เผยแพร่เมื่อ 6 ก.ย. 2024
- Update as of August 25th, 2018:
I have some bad news for those who are keeping tabs on this video. The knocking noise has not stopped but new issues came up recently which has made this vehicle completely undrivable. Let me explain: the vehicle will not drive for more than 10 minutes without stalling without warning and there is some issue with the electrical system with automatic transmission. Here's my advice: do NOT buy a Land Rover/Jaguar/Porsche unless you are willing to spend time repairing the vehicle down the road. It's not worth your time or money. This car has since been traded as I drive a different vehicle now.
Original video description before updates:
Here's our 2004 Land Rover Discovery 4.6L V8 engine making a loud knocking noise while running normally. As far as I know as a person with not much knowledge of cars this shouldn't be happening. A possible defect somewhere in the car perhaps, this has been happening over a year and the sound changes intensity at times. The car still runs like nothing is wrong, for now. The dealership was no help since they said it is a 50/50 chance it might break or not. You also need special equipment or something just to find out what's causing the sound.
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Update as of August 25th, 2018:
I have some bad news for those who are keeping tabs on this video. The knocking noise has not stopped but new issues came up recently which has made this vehicle completely undrivable. Let me explain: the vehicle will not drive for more than 10 minutes without stalling without warning and there is some issue with the electrical system with automatic transmission. Here's my advice: do NOT buy a Land Rover/Jaguar/Porsche unless you are willing to spend time repairing the vehicle down the road. It's not worth your time or money. This car has since been traded as I drive a different vehicle now.
crankshaft position sensor - it has a magnet in it that gets weak after 14 years and stops working when it gets up to temperature. The engine turns off when the sensor stops working. Relatively easy fix and cheap.
@@ticktock2121 Unfortunately many other problems came in besides what has been shown in this video. I have gotten rid of this car permanently and now drive a Mitsubishi instead.
I havent had a vehicle yet that I didn't have to repair down the road at some point lol. Cant be mad the car manufacturer if you buy a vehicle that wasn't well maintained/serviced
@@pauljohnson1991 i just bought a land rover 2007 supercharged with the same problem will fix it for couple bucks :D
It was probably just the crankshaft positioning sensor
I have a 2004 with less then 100,000 miles.... I have the same noise.
It’s a slipped liner, honestly is just a Land Rover noise.... get used to it and drive it normal.
I’ve gone on several road trips 1000 miles plus over a weekend.... still runs strong
Change your head gaskets every two years and your crank shaft positioner sensor every other time.
Do it all your self it’s fairly easy and rewarding .
Lots of videos out there.
Yeah. That's too much especially on my budget. That's why I gave it up and went with a cheaper vehicle that doesn't need nearly as much maintenance overall.
OMG. All these diagnoses are hilarious! It's one disaster diagnosis after another. If someone else is out there viewing this and concerned about this sound, don't be. I have a 2004 Disco and it makes this exact sound. I took it into Land Rover for another issue and they did an exhaustive inspection and came back with $10K of recommended repairs -- none of which had anything to do with this sound. Apparently, it's normal, as not a single word has been mentioned by the dealership claiming otherwise. None of the issues I had related to this noise, and half of them were not really necessary anyway. I'm driving 15K mile since with no problems. But I still have this sound. Don't worry about it.
That's great to hear. But like I said in this video, the point where I couldn't care for this car anymore was when it stalls for no reason without warning. Putting in more to this car was no longer worth it.
@@EnioHabev I wasn’t posting for you. The Disco is a special vehicle, not for the casual buyer. You were right to bail if you didn’t appreciate this beforehand. But I posted my comment for those you do understand what it is but might have been concerned about this sound.
@@juridicus Gotcha. When it comes to social media conversations even IRL, I may sometimes miss the mark. It's one of my flaws that I still have to deal with to this day lol
@@EnioHabev there is nothing to worry about! sometimes I sound harsh, but I wasn’t trying to. my apologies.
Its the rocker arm shaft they wear out after 90k 300$ for a new one common buick motor problem
I had the same problem and ended up using Rotella oil instead of the regular 10w30 I used for years. It was a suggestion on the landrover forums that I strongly suggest you browse around for tips on these vehicles. Goodluck!
Rich Gaddi mine has a ticking sound not tap. Sometimes it comes and goes. Sometimes it’ speeds up so much then slows downs but not at all with the speed of the engine. Sounds weird but I think it could something else?
Its wear on the crankshaft bearings, usually caused by idiots never changing the oil or excessive mileage. In my case previous owners never changed the oil for around 90000 kms so it sounds exactly like yours (I know it isnt a slipped liner because I have had the heads off twice). The only solution is to replace the crankshaft or regrind it if it has enough meat left on the bearing journals. Either way it means removing the engine form the vehicle and stripping it down. My needs doing but I will rebuild the whole engine when I do it. Wont affect the running of your car but it will probablly get worse and sound like shit. Your best fix for now is to do regular oil changes and may be put an additive into the oil for worn engines until you can fix it properly. Regarding the slipped liners, the discovery 2's were fitted with two types of V8 blocks. That is they were sonic tested for wall thickness between the cylinders after they were cast. If you look on the front of your v8 engine block you may see a paint mark in either yellow or blue (I found mine in the valley between the lifters above the cam). The blue blocks were minimum thickness fitted to the base model D2'S the yellow blocks which were the next level up were fitted to the high spec model D2'S like the ES range. If you find yours has a red paint mark on it you are lucky. These were the best but were only fitted to the Range Rover models, Land Rover may have fitted some of these into discovery models to run out old stock.
Sounds about right I think. Sometime after this video was uploaded the vehicle would stall without warning while driving. That unfortunately was the last straw when it came to owning this vehicle.
Crank shaft pulley. Known as "Marble Sound"
November 9th, 2017 update:
The same noise is still heard to this day. No other major issues have showed up so far apart from an ABS sensor being a bit faulty. Thanks for the 8k+ views :D
@ 1:08 if you notice the nice is greater at the passenger side, in my own case I can even see and feel exhaust smoke coming out from there so I check my top gasket and find out its licking so I changed it
I have the same noise and they said is a piston slap same land Rover 2003 discovery 4.6 engine
For future reference you can take a wooden broom handle put it to your ear and set the other end on the engine to locate that sound as the sound will travel through the broom handle and amplify it for you, indicating where the worst of the noise is. Would like to know what solved this issue....
Seriously? This violates the most basic auto mechanic safety protocols. Please do not do this.
Hands down best technique. I’ve learned this from an old timer except he used a long screw driver and put the handle on his ear. Not everything is by the book.
If it's lifters, noise should go after a few mins, allow oils to get to them! Definitely not timin chain! Sounds like a dropped liner! Unfortunately long gone are the days when a farmer could fix the car in a field! Now in order to get £ the manufacturer makes crap cars! Most of the components are made by small companies in wales, sent to the main factory! Long gone are the days of a reliable range rover! Don't buy one!
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i have had this tap sound..for 7 years lub your top end ..i have replaced all top end still tap sound mine sound comes and goes...i run 20 50 in her and a bigger oil filter ..she is quite now...... mystery oil works in oil and gas... hit me up
My 2004 Discovery 2 is ticking loud also. When I accelerate it gets loud (Rapid ticking sound) I have 93,500 miles on it. I use 5/30 oil. Can you help me figure this out. Thank you
Yup... slipped sleeve... maybe even worse, cracked block. Get a reader and watch the temp.
External head gasket failure. that is exhaust from the cylinder creating a tapping noise.
I can only imagine how much that would cost to fix.
@@EnioHabev how much do you have?
@@mackendw Enough to get by. We traded the car off because it became a bad money pit.
@@EnioHabev ya, they definitely require TLC to keep them going. 03 disco here with the 4.6L. was tapping a bit when it came up to temp. I used Rislone and Shell Rotella T5 15W40 and it quieted down nicely. oh and the inline thermostat to keep the engine down under 190 deg.
@mackendw not sure if TLC is related to what was the final straw in getting rid of the car.. but basically the car randomly stalls while driving and finding out the cause at the time wasn't easy.
I drive a new Mitsubishi now mainly for reliability purposes.
Lifter noise
I wasn't expecting this video to get this many views (900+ views as of now). Thanks for watching!
What was the issue ?
@@andrewohare3628 We never found out the actual issue because it was turning into a big money-pit.
Hey there did you ever find out the problem to this problem im having the same issue
Tryppsbeatz Sadly no. I'm risking it out, the only way to know is going back to the dealership and they will charge huge amounts even just to find the issue.
Tryppsbeatz hey friend, please tell me what diagnosis you got from the engine
Sleeve? Losing coolant?
@@ceegeez3880 mine starting making this same exact sound a week ago on a trip. Then on the same day the water pump
Blew and fan was dislodged. Now coolant leaks through water pump like a faucet. Being repaired. Hopefully not anything more but guess we will see.
Did you overheat it ? Reason I ask is that the steel cylinder sleeve sometimes comes loose on those aluminum engines if over heated.
Don't think so. It's been many years being like that. It could be a simple fix but again, the price to pay and find out is a bit too much.
Joe Darling no
My Mechanic did a head gasket job on my 2000 Disco and in less than 100 miles I've got a Cracked Oil Pump. Is there a connection between the Head Gasket repair and the Pump?
I honestly don't know. The few private car mechanic shops that I was in, including the Land Rover dealership couldn't identify the main root cause for the issue. Safe to say that this particular issue and other problems that came after was a big headache not worth going through.
You don't need any special equipment to figure out what the problem is?? Wtf?? I have a 99 disco 2 and it had a few problems when I got it but all you need is some sort of software scanner not an old because these vehicles require a computer to talk to your truck so I'd start there
I guess I was unlucky in this case.
That is a slipped cylinder liner my friend..
Hm. I see. I bet that fixing an issue like that probably doesn't come cheap.
+EnioHabev Noo not at all you have to change the block completely and hope that doesn't happen again because that is a design flaw. There is always a way out tho check out this write up on a Land Rover forum landroverforums.com/forum/general-tech-help-8/how-i-fixed-my-land-rover-tick-slipped-sleeve-48770/
I would say from experience it's a slipped sleeve as well.
Over 1,100+ views on this video. Thanks for watching! I hope this video may be some of use to some of you.
EnioHabev did you find out what the issue was? Mine makes exact same sound. I am leaning towards it belong a slipped cylinder liner....
Base Camp Some sources I've researched seem to say that too. I even heard that same sound on an older Nissan Xterra as well. The car continues to run like nothing is wrong but with the same sound.
EnioHabev that's funny. It's been 3 months for me. Still runs strong. Gonna drive it till it tanks.
Base Camp This has been going on for more than a year with no problems. Trying to even diagnose the problem is not going to be cheap.
EnioHabev I am pretty mechanical and actually replaced the head gaskets myself last year. If it really is a slipped sleeve it can't be repaired so might as well drive it till she implodes. I could be a broken rocker or arm. I may go that far and check it. On mine it doesn't make the until after 1-2 minutes when first started. Which is why I am leaning towards a slipped sleeve (it takes a few minutes for the coolant to loosen up the sleeve and start slipping.) What ever it is sure does generate a lot of stares.
EXHAUST GASKET
I doubt it.... but a head gasket kit that comes with a exhaust gasket too.
You can spray soapy water around your exhaust gaskets to diagnose that issue.
But it’s a slipped sleeve.
Just accept the sound and tell everyone it’s a 7.3L Ford V8
I have the same issue with a 2003 land rover. It runs perfect yet that knocking sound is annoying me. I have 5 docent mechanics look at it and all but one told me the same thing ( lifters) the only one who told me diffrent was either lifters or timing chain. In order to low add Lucas engine treatment and if noise is gone or quiets down it's the lifters if not, it's the timing chain. I did and the noise still exist. Before I change the timing chain, any advice? Let me add, I also did a oil change.(10/40)
Let me know if u change your timing chain what happens, I was told the same thing by a very good mechanic. Thank you
Anthony Frantzis did you ever change that timing chain?
Your not using the right oil use thicker oil and see if it goes quite
hey friend, please tell me what diagnosis you got from the engine!!!! Pleaaaseeee
Jesus Alberto Robles Unfortunately I haven't had the chance to find out because the cost of finding it out is every expensive. Don't know who is an expert on this car. Oh and the dealerships themselves like to charge a high rate just to find out what the problem is which I don't want to do.
EnioHabev tks bro!!!
Any chance youve found the problem? I got a 03 disco just changed headgasket. It didnt do this before i have exacct same noise
Went to several private car mechanics and the local Land Rover dealership and ultimately they couldn't find the main root cause at all.
Does it stil run @@EnioHabev
@@jamesmorris475 not sure. We got rid of the car.
she has a bop 215 ..shes an old hot rod..dont ever let her get hot
I'd suggest a full transmission flush coolant change and maybe swap to a heavier oil, older cars will do better with a heavier grade. Also check the serpintine belt that could also be the issue
Sadly the knocking sound didnt stop. But that's not the point. New issues came up as I just mentioned on my new pinned comment. The car is sadly done at this point.
Yea these trucks are just that. Not really worth pulling motor or putting a new tophat sleeve in. Better off drive until don't drive no more. Head gasket replacement would be about as deep as I'd go with this crappy motor
That was my fate and I don't look back.
In a few places in the thread below you and others mentioning driving it until it goes bad or in one case until it 'implodes' that is a really bad idea. There is a significant difference in cost and downtime between fixing the sleeve issue with a top hat or other acceptable fixes and fixing an engine with a hole through the block or other catastrophic failure.
I can't wrap my head around the idea of driving it it until it blows it is honestly one of the most illogical things I have heard in automotive repair circles maybe the use of JB weld on bolts instead loctite is worse but not by much. Seriously fix it and save money and frustration down the road. Reach out to British Atlantic or go to land rovers forum get advice there.
Even if you plan on getting rid of it once the motor blows you are still probably going to have to pay for towing etc. Why do that?
i had that same problem with my land rover defender 1998, it was actually a broken screw, it broke because i drove it to fast for a long time. easy fix
What screw was it? Maybe I have the same issue.
I'd also like to know what screw, mine has a very similar noise
I just put more than half my savings into my Range Rover because I have wanted one for so long and needed a good get around car it is making the same noise and I have so many problems that weren't disclosed to me this is truly disheartening
Yeah. We learned the hard way also. I am never going for luxury cars again since they are more expensive in general. Even regular everyday cars are already costly already and I'm willing to tolerate those instead. Even if some people say Lexus for example is okay I'm not going for it.
It’s true! I love my British cars and SUVs when they run good but I appreciate my Toyota and Honda for how consistently reliable and well built they are. Tough to beat even though they don’t have much character and loads of people have them. The LRs are tough physically and the drive trains are overall very good and will get you anywhere, but the electronics are a pain and build quality is crap.
What was the problem ?
Never found out the problem. I ended up getting rid of the vehicle and driving anything but high-end luxury vehicles.
@@EnioHabev sorry to hear that ... it is a good fun vehicle ones u find a good and honest repair shop .
@@THINKFILMz I appreciate that. In this case it was a major headache and a moneysink. Had to get out of that.
BAD MISFIRE
Slipped cylinder sleeve
exhaust leak.
That is the sound of multiple cylinder liners hitting the the head.
Probably. Thankfully I dont have to worry about it anymore since I got rid of the vehicle completely. Now I drive a Mitsubishi instead.
Pull the engine, get a top hat block and change out bearings and oil pump.....
5.5k later hahaha
Yeah. I cut my losses because of the issues this car was giving.
flat tire. lol JK sounds like something slapping did you look at the tensioner?
Stephen Chandler Don't think so. It has been many years now since we have had this going on, I can't exactly just go to anybody since you need specific tools to work on a vehicle like this. I also don't like going to the dealership since they like to charge big even just to look at the car. There might be videos out there explaining this problem but I don't want to try fixing it myself since it's not worth it with the budget I have.
Head gaskets....
Yeah.. Glad I dont have to spend anymore money on this thing.
most definitely not the head gaskets lol
Worthless.. So what s the cause good sir?
Never found out. I moved on because finding out would mean losing more money.
That’s a slipped cylinder liner... happens on most of the D2’s
also i have 155k on her
Another SAI owner!
I took mine off on the rebuild i'm doing