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Post by lardarse on Jan 29, 2009 0:31:46 GMT 6
my replacement engine has gone bang now!!!! hole in other side of engine this time, what are my chances of getting Nissan to cough up for this one it was a second hand engine and i have had it serviced regularly but no history from before? regards to you all John
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Post by Niall Scott on Jan 29, 2009 20:47:00 GMT 6
I think you,ll get nowhere John
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Post by lardarse on Jan 31, 2009 23:38:52 GMT 6
have you recieved the letter from nissan concerning "the durability of a small percentage of engines"? man how unlucky am i to have two of these small percentages!!!
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Post by supermotoman on Mar 16, 2009 1:19:39 GMT 6
Hi all, new to the site but i do have an 02 plate Navara with 67k on the clock. I found out about the engine failures after i bought the thing and am now seriously conncerned about mine blowing up. Is there anything i can do to check if mine has ever had any work done on it before i purchased it. Also anything i can do to prevent this failure. I think i will be looking to get rid of it if anyone will take it. I paid 7k for it 1 year ago and was offered 4k against a garage trade-in last week.
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Post by chrisvince on May 10, 2009 1:52:42 GMT 6
Hello fellow D22 engine sufferers. This is my first post on this site, although I have written reams and reams on your sister site, Nissan-navara.net. I am the bloke who devised the bottom end YD25DDTi engine upgrading and strengthening solution. I also sourced the upgraded ARP bolts and ACL lead/copper big end shells, as well as coming up with an upgrade for the pathetic sump oilway to oil pump 'O' ring seal. I did all this because like the rest of us, I bought a Navara thinking that Japanese engineering 'won't go wrong' and I will have very reliable motoring for a long time. Little did I realise! I bought my Navara very cheaply with a rod already out in December 2006, eventually I managed to get a replacement engine with 24K on the clock, but by then I was aware of the YD25 engine problems. I quickly realised that there was no point fitting this 2nd engine only to wait for it to go bang just as it's predecessor did. So I did about 2 months internet searching to find out more about these engines, eventually I did formulate a theory why they do self destruct, and then a way to prevent it happening. Marvelous thing the internet, I found the bearings in Australia and the bolts in the USA. I have made all of my findings open on your sister site and have seen that most of them have made their way onto your site, to which you are all welcome. Obviously I cannot and will not guarantee that this is a definitive solution, but all I can say is that my Navara is running like a Swiss watch 22K later, dozens and dozens of other owners have copied my upgrade NONE have reported any problems, one engine even suffered gelled oilways (too much additive) leading to oil starvation when inspected the ACL bearings were as good as the day he fitted them! This would not have been the case with the original Nissan aluminium/tin bearings! One point I have read on your site that needs clarifying is that in my experience, owners/drivers will NOT get the classic big end knocking to alert them to bearing wear. The engine will more than likely give a tingling light rattle, that most people will think is top end or valve problems, indeed I know of one YD25 engine that had it's camshafts replaced by fully trained Nissan mechanics at a main dealers! Ignore this noise at your own peril. Several owners on the N-N.net site have as a precaution changed their bearings etc completely unaware they had any problems whatsoever. What did they find? No3 completely bu**ered! This problem is solvable, the choice is down to each owner, around 80 quid now or many thousands sometime in the future, by when the car will probably be a write off as it won't be worth the expense. Good luck to all, I hope to read through most of the postings soon, Chris Vince
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Post by Niall Scott on May 10, 2009 22:06:51 GMT 6
Hi Chris ,Welcome in .Nik and I are both members of NN.net and have been watching your posts.We,ll take this opportunity t o thank you for all the hard work you have done and for the benefit of your research and expertise.The article we have here on the cause of conrod failure (and I posted last week on nn.net) is by Mike Booth www.the- engine-rebuilder.co.uk confirms your opinion with one exception .All the photo,s Mike has given us shows the bolts still in place after conrod failure,but I agree with you and would replace them It would be wise to do what you suggest when an individuals engine has failed but I believe it is nissans responsibility until then as they sold us pickups which are not fit for service because of the manufacturing engine fault I would advise anyone though who wants longevity from their vehicle to do this remedy if they are lucky enough to have a complete engine by thetime the extended warranty expires I,m now hearing the tingly rattle you describe in engine no2 at 60,000 miles What a pest Have you heard of any problems with the injector pump Thanks again Regards Niall
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Post by chrisvince on May 11, 2009 4:05:34 GMT 6
Hello Niall, I do not disagree with your man, we are learning new things about this engine all the time, please remember that I wrote most of these articles 2.5 years ago, with very little evidence (except a holed engine). However I still maintain that the badly designed/incorrect material, weak bolt theory should not be totally discounted. As you may be aware there are plenty of accounts on N-N.net of YD25 engine failures where the bolts have snapped, my own car included. I believe that vibrations/resonance from worn bearings set up a change in the structure of the bolts, a form of work hardening that makes them granular and brittle. This to a point that, when stressed further leads to their instant failure. I have painfully measured complete sets of bolts (except a pair from my original engine that are still lying in a Bristol gutter!) from one self destructed engine, one engine that needed a bearing etc change, and my good replacement engine 24,000 miles only. Approximately 60% of these bolts regardless from which engine they were from, showed vast difference in lengths, some were up to .038" longer than original spec! On the significantly overstretched bolts it was impossible to run their respective nuts completely along the length of the thread by hand. Thus indicating a permanent change had taken place within the bolt, it having gone past it's plastic limit, into a permanently deformed, weakened state. This is obviously extremely undesirable, and a major weakness of the design or materials used. I began my own investigations into this whole sorry mess of an engine well over 2 years ago, of which very little had been done previously. I still uphold my thoughts that the original bolts should be able to hold the big ends together, and that as we all now accept the big end shells are simply NOT up to the job, but I now have the knowledge there are other worrying latent defects that become apparent if the worn ends are not recognised and rectified in good time i.e. the cracking at the oil way on the conrods. I understand (perhaps someone may be able to confirm this?) that there is still mileage in my musings, as Nissan have now, and only supply upgraded shells and bolts. re: the 'O' ring issue. I have measured 3 original 'O' rings, all were virtually flattened offering very little sealing effect. I still think that the length of the oil pick up gallery together with a partially blocked oil pick up strainer (through lack of servicing/poor quality/wrong grade of oil etc) will cause enough of a vacuum to overcome this pathetic seal and entrain air into the oil, when the engine is running, thereby aerating it and destroying oil pressure. Also, there are many accounts from owners on N-N.net of oil lights taking an age to go out on first start up, this would indicate that the oil has drained back into the sump and needs to be picked up again into the oil pump, similar to when an oil change has been performed. To drain back into the sump must mean that air is getting into the oil pick up gallery, the only place this can occur is at the sump/oil pump 'O' ring. Being an avid reader of your sister site (and now this one) I am not aware of any other major generic defects that occur on a regular basis, this includes injection pumps, howevere there is an issue of blockages on the banjo inlet strainer on early pumps fitted to the D21's. One other fault that is now appearing on higher milage cars is the gearbox neutral switch, when this fails it causes significant loss of power and hesitation similar to fuel starvation, usually in gears 3,4, & 5, this is easily fixed by replacing the switch but can lead to many hours of unnecessary work and expense if incorrectly diagnosed. Lastly, Nissan will only uphold their warrenty on cars that can prove an impeccable service history, not many can achieve this. Being reasonable, although this whole sorry mess has been initiated by Nissan, we as owners cannot expect a lifetime guarantee, there has to be a natural cut-off period of responsibility, for most of us I would suggest this has now sadly past. Having said that, is it common knowledge amongst the members of this site, that as a result of all the evidence gathered, work performed and complaints made that Nissan have increased their warrenty to 150,000 kms or 5 years? I am also aware that they haven't made this common knowledge, in fact I recommended one owner go to the Guildford main dealer with a big end problem to be told he was totally mistaken and the warrenty was 60K or 3 years, so even their main dealer network was in the dark! Regards, Chris
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Post by blueice57 on Sept 24, 2009 2:51:58 GMT 6
Feb 2004 on a 53 plate D22 double cab , 62k on clock , full service history , I am 3rd owner .
Name: Allan Tel: 07751 124 165
My D22 engine went pop today , or was it more of a brief crackle then silence. Anyway ....
Nissan in Basingstoke looked at my service history book and say the intervals are too long between services, and it is now out of the 5 year warranty period on the fault bulliton.
Because I am the 3rd owner of this vehicle , and have no other Niassan vehicles , I am marked down on the customer loyalty ladder. So the upshot is £740 for them to inspect the damage (only Nissan main dealers can do this to presserve warranty !! What warranty???)
And if it is the fault of the part listed in their fault bulliton I might be able to get a discount of 20 , 30 , or maybe 50% on the work to replace the short engine.
BUT if it is not the faulty part listed in the bulliton, then £6k for new engine plus the £740 for inspection work.
SO ... back to the dealer I bought from, 3 monthes and 3 days ago , who was quibbling the 3 month warranty he sold with the vehicle . " It is 3 days outside warranty" !!!!!!!!!!!!!!!!!!!!!!
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Post by chrisvince on Sept 25, 2009 2:25:06 GMT 6
Allan, Go back and make lots and lots of noise, Nissan know the YD25DDTi has very serious engine problems. They now know what, and why it happens. If you get no luck locally get onto Nicola Fuller, Customer Relations Manager, Nissan UK. No promises or guarantees but worth a go. I can't see why they want to charge you 740 quid to look at a hole in the block? We (and they) all know what has happened, and why. It's completely down to Nissan and their defective bearings and bolts, that were/are NOT fit for purpose!!!!!!!!!! Good luck, Chris
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Post by blueice57 on Sept 25, 2009 3:19:57 GMT 6
Back to the used car dealer I bought it from , I have been told that dealers are respnosible for the vehicles sold, for six monthes, I have offered him two options, repair it or buy it back !
I am waiting for his decision ??
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Post by blueice57 on Sept 28, 2009 3:54:27 GMT 6
I checked with a warranty company and consumer direct about the 6 monthes dealer responsibility thing , and it is wrong. Under the "Sale of Goods Act 1979" anyone selling goods is resposible for the goods for up to 6 YEARS !! But of course there is the question of wear and tear and expected life span of the goods to be considered . So I would expect the Navara I bought with 66k miles to do a few more than 1500 miles in 3 months before it was "knackered". Modern well built , well maintained diesel engines should go on for 200k plus miles , shouldn't they
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