Hi, I just want to thank you for giving me the hope that all will be good. And I finally did it!. But, I want say to everyone that have N46b20 engine (or generally all n46, idk) that the locking pin isn't long enough and don't do his job. So, take something (like a long smooth bolt) that is the same diameter of the pin and cut it 1 cm longer than the original one and it will work perfectly. Thank you again bimmerzen, all your videos are awesome and well explained. Support ❤️
Thank you for spending the time to do this and to share it with us. I have a 3i8i Touring and replaced the chain guide in the back garden with some friends. This brings back so many memories. Two years on on 30, 000 miles and no issues. I did start getting an oil leak in sparkplug 1 and 4 and replaced the gasket last week. I turned out that the O rings on the two spark plugs tubes where hardened and leaked. This is a very good reference far us all.
Zen the bummer best friend thanks much for you videos in full detail and wel explained question the vanos as a oil hole as to line up with the holes on the camshaft I see where you just install you didn't make sure that the holes are inline with each other
Not sure I understand your question. Orientation of the VANOS units (sprocket gears) relative to the camshafts is not important. There is a recess in the parts so that oil can flow freely from camshafts to the VANOS and vice-versa.
Hi, is there any specific position the vanos unit needs to be put in? Or it doesnt matter as long as the locking tool holes align with the plate holes?
@@christiand193 correct, orientation if Vanos units is irrelevant. You just need to make sure they are locked in initial position. Timing is determined by impulse sending gears alignment.
@@BimmerZen thank you for quick response! Excellent. I have a problem with my N42, i have done the timing steps, everything seems to be set correctly, but the engine seems to have rough idle, low power below 4000 rpm, everything points to Vanos issue, the units appear to be locked. I do have an oil pressure light on, i wonder if i messed up the balancing shaft timing when i was rebuilding the ending. Do you have any video on that?
My god, trying to find that hole....! Took me nearly two hours of messing around trying to find the damn thing. Can I ask what does turning the vanos bolts do turning them to 180 degrees? is that for extra torque?
What about fixing the oil balancer, the öil pan needs to come off for that in all other videos. Thats actually the biggest part of changing the belt. Why did you not fix the öil balancers? does it work without?
Not needed here because the crankshaft bolt is not removed. Balancing shafts are driven via oil pump sprocket and that is fixed in place by crank bolt. No need to remove the chain in this case.
Some people do it without removing oil sump, so I assume it is possible if you are really careful and you know what you are doing. You of course still have to insert the locking pin through the flywheel to remove crankshaft bolt. The problem is, that you risk accidentally rotating balancing shafts when the central bolt is removed because oil pump chain sprocket is disconnected from the crankshaft.
Hi BimmerZen.Great video series. I am not sure if you have already answered this or discuss it in another video, but how did you decide that the timing chain does not need to be replaced? Why did you replace only the guides? How did you determine the chain is not strectched and can continue being used? Thanks!
To be honest, I didn't. I assumed that the cause of this problem was weak original tensioner and brittle plastic of the slide rail. And based on the overall condition of the engine, it looked like it was well taken care of. I am daily driving this car at the moment and the engine works great. Good power, no rattling, good idle, good fuel economy, starts every time on cold starts without any hesitation or rattles... There is a special tool for N42/N46 to measure the chain stretch which you screw in instead of chain tensioner but I don't have it.
@@BimmerZen Hi, thanks for quick response. I have an N46B20A, I had used your 3D printed tool for valve stem seal replacements which have worked great by the way! I have replaced the timing chain tensioner 3000 miles ago but I recently bought the complete timing kit in anticipation of having to change the chain. On cold starts i can hear a rattle only for a second or two, but that could be until oil pressure pushes out the tensioner... Engine runs as perfect as an N46 can be but i fear I might have to change the entire chain and guides, no broken plastic as of yet. I will look into the tool and see if it is worth it. Thanks!
@@gianlucachetcuti2210 Great to hear that! My personal N42 car from chain replacement video also has that 1-2 sec rattle when I start it after it was sittings for a while. I plan to look in to that someday:) I suspect VANOS units or something with oil pressure. Otherwise engine works OK.
After tightened the sprocket bolts the timing tool can't be removed easy. I have to tap it with a hammer, does that means anything that should concern me ?
I did not replace the intake unit. I disassembled it and cleaned it out. I've put it back because I want to test if cleaning worked. I am editing a video on this as we speak:)
@@robertalexandrescu9975 no startup rattle so far, but i want to use the car a bit longer just to confirm that unreliable vanos locking was the cause...
You mean the front Vanos locking tool? How much is it out of position? It's normal for the front locking tool to be very slightly off after timing and you have to wiggle it a bit to get it back in.
I have just Completed 1. Replaced Chain Guide 2. Vac Pump gasket change 3. Place Valve cover gasket 4. tuning 5. Changed new rev Tensioner 6. some other o rings Thanks alot your vid save me a lot of $$$$
Sori, ker ti spet tezim z vprasanji, ampak jebiga, dobra vsebina te sili k razmisljanju. Povej mi, ko takole dajes ketno dol, brez da jemljes karter dol in razklapljas spodnji zobnik od oljne pumpe, a se spodaj ketna kaj zatika, ko dajes gor vanos enote? Se da potem, ko so vanos enote gor, videt, ce ketna lepo sedi na spodnjem zobniku? Moral bom tole narest, ketno sem sicer delal 12k nazaj, ampak je bil motor zunaj. Mislim, da me drocnik zafrkava.
Np. Veriga se lahko malo stakne spodaj, ko snameš VANOS enote. ZELO pomembno je, da pri morebitnem obračanju glavne gredi, držiš verigo napeto, tako da se nalega spodaj v zobnik. Če se "nabere" spodaj se lahko polomi plastično vodilo - to se je zgodilo meni, ko sem prvič to delal. Pri montaži VANOS enot pa je tudi potrebno držati z roko verigo napeto - lahko jo malo potegneš gor dol, da vidiš da lepo naleže ali pa posvetiš s svetilko - Ko sta gor obe VANOS enoti pa verigo že malo napenja vzmet v samem vodilu in napenjalec. Lahko si pogledaš moj video o menjavi vodila, tam mislim, da je vse nekako razloženo.
![Replacing vacuum pump seals - BMW N42/N46 Chain Rail Replacement [PART #7]](http://i.ytimg.com/vi/z60kTeW2GUM/mqdefault.jpg)
![Replacing vacuum pump seals - BMW N42/N46 Chain Rail Replacement [PART #7]](/img/tr.png)
![Installing valve cover and starting the engine - BMW N42/N46 Chain Rail Replacement [PART #8]](http://i.ytimg.com/vi/RjYh12M4akw/mqdefault.jpg)
Hi, I just want to thank you for giving me the hope that all will be good. And I finally did it!. But, I want say to everyone that have N46b20 engine (or generally all n46, idk) that the locking pin isn't long enough and don't do his job. So, take something (like a long smooth bolt) that is the same diameter of the pin and cut it 1 cm longer than the original one and it will work perfectly. Thank you again bimmerzen, all your videos are awesome and well explained. Support ❤️
Thank you for spending the time to do this and to share it with us. I have a 3i8i Touring and replaced the chain guide in the back garden with some friends. This brings back so many memories. Two years on on 30, 000 miles and no issues. I did start getting an oil leak in sparkplug 1 and 4 and replaced the gasket last week. I turned out that the O rings on the two spark plugs tubes where hardened and leaked. This is a very good reference far us all.
On the pre-tensioner, I personally just hand tighten the bolt and just feel that the chain is tensioned. It works very well for me.
The designers must have had a right giggle when choosing where to put the hole for the flywheel locking pin.
Love the way you explain it 👍🏻
Zen the bummer best friend thanks much for you videos in full detail and wel explained question the vanos as a oil hole as to line up with the holes on the camshaft I see where you just install you didn't make sure that the holes are inline with each other
Not sure I understand your question. Orientation of the VANOS units (sprocket gears) relative to the camshafts is not important. There is a recess in the parts so that oil can flow freely from camshafts to the VANOS and vice-versa.
@@BimmerZen I figured that much I need some more technical info how can reach you am have problems with the e46
@@vinotec4136You can send me an email to bimmerzenchannel@gmail.com
@@BimmerZen ok kool I already send u a long messages on ig lol explaining it al I guess
I got the inpa today just for back up I c where the Delphi got a update to 2018
Loved your explanation on the flywheel locking pin(sex education). Hilarious.
Hi, is there any specific position the vanos unit needs to be put in? Or it doesnt matter as long as the locking tool holes align with the plate holes?
@@christiand193 correct, orientation if Vanos units is irrelevant. You just need to make sure they are locked in initial position. Timing is determined by impulse sending gears alignment.
@@BimmerZen thank you for quick response! Excellent. I have a problem with my N42, i have done the timing steps, everything seems to be set correctly, but the engine seems to have rough idle, low power below 4000 rpm, everything points to Vanos issue, the units appear to be locked. I do have an oil pressure light on, i wonder if i messed up the balancing shaft timing when i was rebuilding the ending. Do you have any video on that?
My god, trying to find that hole....! Took me nearly two hours of messing around trying to find the damn thing.
Can I ask what does turning the vanos bolts do turning them to 180 degrees? is that for extra torque?
Yep... that hole is a PITA:D you absolutely must torque the bolts 20 Nm and then rotate them 180 deg.
What about fixing the oil balancer, the öil pan needs to come off for that in all other videos. Thats actually the biggest part of changing the belt. Why did you not fix the öil balancers? does it work without?
Not needed here because the crankshaft bolt is not removed. Balancing shafts are driven via oil pump sprocket and that is fixed in place by crank bolt. No need to remove the chain in this case.
Hi all, Is it possible to do the timing chain without removing oil sump and aretation camshaft at bottom?
Some people do it without removing oil sump, so I assume it is possible if you are really careful and you know what you are doing. You of course still have to insert the locking pin through the flywheel to remove crankshaft bolt.
The problem is, that you risk accidentally rotating balancing shafts when the central bolt is removed because oil pump chain sprocket is disconnected from the crankshaft.
@@BimmerZen It makes sense. Thank you for answer
Hi BimmerZen.Great video series. I am not sure if you have already answered this or discuss it in another video, but how did you decide that the timing chain does not need to be replaced? Why did you replace only the guides? How did you determine the chain is not strectched and can continue being used? Thanks!
To be honest, I didn't. I assumed that the cause of this problem was weak original tensioner and brittle plastic of the slide rail. And based on the overall condition of the engine, it looked like it was well taken care of. I am daily driving this car at the moment and the engine works great. Good power, no rattling, good idle, good fuel economy, starts every time on cold starts without any hesitation or rattles...
There is a special tool for N42/N46 to measure the chain stretch which you screw in instead of chain tensioner but I don't have it.
@@BimmerZen Hi, thanks for quick response. I have an N46B20A, I had used your 3D printed tool for valve stem seal replacements which have worked great by the way! I have replaced the timing chain tensioner 3000 miles ago but I recently bought the complete timing kit in anticipation of having to change the chain. On cold starts i can hear a rattle only for a second or two, but that could be until oil pressure pushes out the tensioner... Engine runs as perfect as an N46 can be but i fear I might have to change the entire chain and guides, no broken plastic as of yet. I will look into the tool and see if it is worth it. Thanks!
@@gianlucachetcuti2210 Great to hear that! My personal N42 car from chain replacement video also has that 1-2 sec rattle when I start it after it was sittings for a while. I plan to look in to that someday:) I suspect VANOS units or something with oil pressure. Otherwise engine works OK.
The point is, that I replaced the chain, but the rattle is still there... so this symptoms are probably not due to a stretched chain...
After tightened the sprocket bolts the timing tool can't be removed easy. I have to tap it with a hammer, does that means anything that should concern me ?
You mean the front vanos locking tool? Its normal for the front tool to be a bit tight after tightening the bolts...
i presume this engine does not have balancer shafts as you did not remove sump pan
It does have the balancing shafts, but since the main crankbolt was not released, they do not lose timing.
This guy awesome, what is your intro song?
Hi! Have you opened the vanos units? I didn't find in your videos... Did you changed the admision unit, the one that did not close?
I did not replace the intake unit. I disassembled it and cleaned it out. I've put it back because I want to test if cleaning worked. I am editing a video on this as we speak:)
@@BimmerZen Looking forward to see it. So after cleaning it runs good, no startup rattle?
@@robertalexandrescu9975 no startup rattle so far, but i want to use the car a bit longer just to confirm that unreliable vanos locking was the cause...
Hi All
My engine keeps skipping or jump timing when i hand turm the crankshaft bolt 😢
You have to check if the VANOS units are locked:
ua-cam.com/video/Iq8aGI8-5dE/v-deo.html
ua-cam.com/video/Fn85Y-X9fAM/v-deo.html
@@BimmerZen thank you very much will check the link 🙏🏼🙏🏼🙏🏼
Hi. My intake cam it does not tighten enough, when I check it is no longer on point 😢 why?
You mean the front Vanos locking tool? How much is it out of position? It's normal for the front locking tool to be very slightly off after timing and you have to wiggle it a bit to get it back in.
@@BimmerZen more than normal postition.. the cam have a mortal angle and the wheel with chain is rotate and cam she can’t.
@@blacku.892 Are the vanos units locked in initial position?
@@BimmerZen no
@@blacku.892 They need to be locked during timing procedure
ehm there is no hole on my 2004 N42 with GM transmission.....pls help
There is. Keep calm and keep trying.
@@BimmerZen
I have just Completed
1. Replaced Chain Guide
2. Vac Pump gasket change
3. Place Valve cover gasket
4. tuning
5. Changed new rev Tensioner
6. some other o rings
Thanks alot your vid save me a lot of $$$$
Hello BimmerZen, I wwant to buy the 3d printed tool
Please contact me on bimmerzenchannel@gmail.com
the 3d printed tool is not the list!
Sorry, I fixed the link and the torque wrench is now available.
@@BimmerZen no, I can't open the link
Sori, ker ti spet tezim z vprasanji, ampak jebiga, dobra vsebina te sili k razmisljanju. Povej mi, ko takole dajes ketno dol, brez da jemljes karter dol in razklapljas spodnji zobnik od oljne pumpe, a se spodaj ketna kaj zatika, ko dajes gor vanos enote? Se da potem, ko so vanos enote gor, videt, ce ketna lepo sedi na spodnjem zobniku? Moral bom tole narest, ketno sem sicer delal 12k nazaj, ampak je bil motor zunaj. Mislim, da me drocnik zafrkava.
Np. Veriga se lahko malo stakne spodaj, ko snameš VANOS enote. ZELO pomembno je, da pri morebitnem obračanju glavne gredi, držiš verigo napeto, tako da se nalega spodaj v zobnik. Če se "nabere" spodaj se lahko polomi plastično vodilo - to se je zgodilo meni, ko sem prvič to delal. Pri montaži VANOS enot pa je tudi potrebno držati z roko verigo napeto - lahko jo malo potegneš gor dol, da vidiš da lepo naleže ali pa posvetiš s svetilko - Ko sta gor obe VANOS enoti pa verigo že malo napenja vzmet v samem vodilu in napenjalec. Lahko si pogledaš moj video o menjavi vodila, tam mislim, da je vse nekako razloženo.
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