If the chains are good you could just replace the tensionor, make sure it's genuine. Otherwise here is the Link to the timing chain kit fitted www.yd25.com.au/index.php/services/yd25-duplex-timing-chain-conversion-kit

Can only jump a tooth when the chains are super worn out or sprockets missing teeth. If the parts are all brand new and the fail safe is in the tensioner it's won't be able to jump. We replace the chains in the car 9 hour job for a d40 and 15 for a d22

you have to go down with the bottom pan in d22 way to change the lower chain

​@@yd2532what about a pathfinder R51?

@@bushratbeachbum r51 is the same time as a D40 around 9 hours

@@yd2532 legend. Cheers mate. Ill set aside two days so I don't have to rush. Much appreciated. Ill look at ordering asap

Yes that's normal

Crank, vacuum pump, fuel pump sprockets need to be changed as they wear the most. Cam sprockets are already double row and do half the revolutions of the crank so they don't wear as much as the rest

Yes that's fine

Cam sprockets are double row from factory and do half the revolutions of the crank so they last the longest out of all the sprockets. If you do replace them make sure you hold the cam by the first lobe with a big shifting spanner with good flats on it. Don't hold it by the hex in the centre of the can cause you will either round it off or it will start to twist the cam from the torque 144nm

i have a 2.2 diesel engine. Its done 1,20,000 miles . Regular maintained. Early interval 5w30 oil changes. How much should I expect timing chain to last more? What would be significant symptoms of timing needing a change? Although on the other end of cams , vacuum pump chain sprocket had slacked at 1,00,000 miles . I did a work around and gave the needed tension to the tensioner guide. I noticed the teeth on pump sprocket one thin , but its working just ok since then. Please guide me about timing, how long do they last on good maintained.

If you don't have the fail safe in the tensinor or the chains are really worn it may jump teeth.

www.tiktok.com/@yd25.com.au/video/7187004034899791105?_r=1&u_code=d8l049fa7dh37f&preview_pb=0&sharer_language=en&_d=d8l044aajmgd10&share_item_id=7187004034899791105&source=h5_m&timestamp=1700302195&user_id=6747806667557585926&sec_user_id=MS4wLjABAAAAXXad7RKkwD5fjZuucsAkTDblrfBl_MEX8TTuSJRE_f1nXZzFMcHHd5rxSjIR8QXL&social_share_type=0&share_iid=7302168086265661185&share_link_id=c7ac05ff-ed27-4b10-b347-e67fd30a3bda&share_app_id=1233&ugbiz_name=MAIN&ug_btm=b8727%2Cb2878

Yea vacuum pump is the only thing that needs loctite

@@yd2532 cheers thanks

Ye here is the link www.yd25.com.au/index.php/services/140kw-duplex-timing-chain-conversion-kit

@@yd2532 Cheers. I have to do the timing chains so I figure I should do the conversion while I'm in there. To confirm, you need to know which Vac pump mine has and do I just email through the website to order?

@@bluenaite Ye find out which vac pump is on it and email or call to order

I dont but we usually take of the lower sump off before you pull the engine so you can leave the front diff in

@yd2532 thank you, I am going to give a try.

Around 400psi

Yes will fit euro 3 2005-6. We started making shims locally because they were hard to get from Nissan $25 for the 2 shims

3 bond supersealer grey silicon is what we use

@@yd2532Does it include timing chain cover gasket and aprox how much to do the entire job? Thanks

@@andydiep3632 doesn't come with the cam chain cover gasket usually they are fine to reuses just silicon them in the corners. We charge $2500 for a standard D40 parts and labour

@@yd2532 I am looking to do the Job my self so how much is just the kit it self? And anything to look out for when doing so?

Yd25.com.au has the best double row and single row kits

@@yd2532 Unfortunately for my country this site is blocked I don't understand why, I'm from Poland, how else can I buy a chain from this company? because I understand that Yd25 is a direct chain manufacturer? please forgive me but I haven't owned this car for a long time and I want the best for it hence my inquisitiveness.

@@yd2532 Maybe you know equally good producers who will be available in Poland?

@@dzikidzik1752 they can send parts internationally just fill out the contact page. Otherwise if you get a kit locally just get a genuine one

@@yd2532 Thanks a lot for your help master 💪🍺

Single row chain is prone to snapping so we upgrade to double row

Ye they are hydraulic tensinors usually when the top tensinor starts to go bad it will rattle untill the oil pressure light goes out

When you pull the car apart the colour links won't line up. Mine does because I put the chains on for the video. So just put crank to 12 o'clock and pin in fuel pump and your good to pull apart

My car is Navara D22 , 2010

@@romankravchuk2720 it's something we have made. You could cut a bit off you old tensinor plunger to use as a fail safe

@@yd2532 What is the price for the timing chain kit (not duplex) Navara D22? I have bought oil pump from you before.

@@romankravchuk2720 genuine single row with a billet vacuum pump sprocket is $950

Doesn't have to just check it for wear

Ye here is the kit for 140kw models www.yd25.com.au/index.php/services/140kw-duplex-timing-chain-conversion-kit

Genuine tensinors are the best but the top ones are prone to failing (rattling on startup till the oil pressure light goes out) The fail safe takes up the air gap in the tensinor so if it does fail it doesnt have enough slack to jump teeth.

@@yd2532 measures of fail safe can you tell us?

@@TheMrthiagox around 7mm it's designed so the spring fit inside it so it doesn't add any tension it just takes up the air gap

@@yd2532 but this fail safe will not make noise?

@@TheMrthiagox doesn't add any noise by using the fail safe

The still use single row

From factory Nissan has the wrong shim on them most of the time because they cant easily check alignment because the vac pump sprocket has 2 floating rings around the teeth. That's why the chain life varies so much because of the factory alignment

Thanks for the fast reply :) where do you get the shims from ?

@@mattsfat73 we had some made or nissan

With the latest design top tensioner from Nissan don't use the gasket

@@yd2532 Great teacher, thank you!

we make it for the balance shaft pin. The fuel pump pin is just a screwdriver bit

4 red ones 2 small 2 big. From block to rear timing cover

Watch this vid kzfaq.info/get/bejne/jKiSmq5yzLLbdnk.html

Thanks YD25. Where do I get the fuel pump shims as they don’t come with the kit

@@magpiesfc10 we sell them or nissan

Do you have the part numbers for the different sized shims please

The shim kit is an optional extra

@@yd2532 Where do you recomand to order from ? :)

@@negueba235689 if you in Australia you can order from our online shop otherwise fill out the contact us section on the website yd25.com.au

We make them you can hire them when you use our kit

this is a 2008 euro 4 engine. Still similar process depending on the kit you buy

​@@yd2532Thanks. What's a good reliable duplex chain kit worth buying?. At what stage would one knows when to change?. Mine is 165.000 K.m on clock but it's not idling then when attempting to accelerate it farts n missis then dies. It smokes a really white Hazy putrid smoke but no oil in coolant nor coolant in sump. It struggle to start. S.c.v, e.g.r cooler replaced (but not needed, injectors tested fine. E.g.r valve actuator works fine. Any idea what may cause this grief?... Crank n cam sensors?. Thanks again in advance..Carl

@@conmanumber1 could be your scv make sure you get a genuine one. here is achain kit to suit. yd25.com.au/index.php/services/140kw-duplex-timing-chain-conversion-kit

​@@yd2532Is this simular to the West Yorkshire Engines independent Nissan Navara service guys duplex kit he invented?. I was about to order from him but noticed yours.

@@conmanumber1 it's our own kit uses genuine Nissan double row chains.

Before removing the old bottom chain and sprockets you can replace the vac pump sprocket with the new one then lock the fuel pump and torque it but the worn chain jumps sprocket teeth.

Link might only work for Australia. Where are you located?

check for blowby from the breather hose on the tappet cover