Can new chain tensioner cause damage?

RichardGoller · 01-06-2021, 11:28 AM

I have a very slight noise coming from the top of my N52 and I'm thinking it's the vanos or the chain. Can a new chain tensioner make things worse, someone said it can break the old plastic chain guides

Phil325i · 01-06-2021, 12:32 PM

Will be interested to see people's responses to this. Having done well over 100K, I was thinking of fitting a new tensioner as a preventive maintenance item...

RichardGoller · 01-06-2021, 02:49 PM

Quote:

Originally Posted by Phil325i

Will be interested to see people's responses to this. Having done well over 100K, I was thinking of fitting a new tensioner as a preventive maintenance item...

Couldn't wait for people to respond so I fitted it anyway, went for an hour's drive, so far no problem. If anything it felt a lot smoother at first but as I was coming home it started to feel like it used to...still idles at 550 and it vibrating a lot

E92William · 01-07-2021, 12:07 AM

Any codes for it?

RichardGoller · 01-07-2021, 05:41 AM

Quote:

Originally Posted by E92William

Any codes for it?

Nope. Only have one fault code, it's oil pressure swith plausability. I changed the sensor, the garage checked oil pressure, all seems fine, so I assume it's the wiring.

matteblue3er · 01-07-2021, 08:46 AM

Quote:

Originally Posted by RichardGoller

I have a very slight noise coming from the top of my N52 and I'm thinking it's the vanos or the chain. Can a new chain tensioner make things worse, someone said it can break the old plastic chain guides

It's interesting you say that a new tensioner can break the guides.

I replaced mine a few thousand miles ago when I did MILVs and I now have a vanos issue. I'm wondering now if the guide broke and one or both of the cams jumped timing. I need to open up the motor I've just been lazy....

AoS810 · 02-01-2021, 02:57 PM

Quote:

Originally Posted by matteblue3er

It's interesting you say that a new tensioner can break the guides.

I replaced mine a few thousand miles ago when I did MILVs and I now have a vanos issue. I'm wondering now if the guide broke and one or both of the cams jumped timing. I need to open up the motor I've just been lazy....

Did you get a chance to confirm whether the chain guide was actually broken? I'm sitting at 164K miles on my N51 and was thinking of replacing the chain tensioner because I'm getting a slight rattle when the car is cold when accelerating. The rattle disappears completely when the car is warmed up. No codes or drivability issues in my case.

If anyone else has experience replacing the timing chain tensioner I'd greatly appreciate any input good or bad.

matteblue3er · 03-27-2021, 03:46 PM

Quote:

Originally Posted by AoS810

Did you get a chance to confirm whether the chain guide was actually broken? I'm sitting at 164K miles on my N51 and was thinking of replacing the chain tensioner because I'm getting a slight rattle when the car is cold when accelerating. The rattle disappears completely when the car is warmed up. No codes or drivability issues in my case.

If anyone else has experience replacing the timing chain tensioner I'd greatly appreciate any input good or bad.

Finally got around to fixing this. Chain guides were fine but my cams jumped timing. Reset and it runs fine now. Luckily no valve damage and compression is fine

01-06-2021, 11:28 AM	#1
RichardGoller Private First Class 15 Rep 130 Posts Drives: BMW E92 Join Date: Sep 2020 Location: London iTrader: (0)	Can new chain tensioner cause damage? I have a very slight noise coming from the top of my N52 and I'm thinking it's the vanos or the chain. Can a new chain tensioner make things worse, someone said it can break the old plastic chain guides
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01-06-2021, 12:32 PM	#2
Phil325i Brigadier General 645 Rep 3,228 Posts Drives: E92 325i MSport Coupe Join Date: Apr 2012 Location: UK South East iTrader: (1) Garage List 2009 BMW 325i Coupe [6.00]	Will be interested to see people's responses to this. Having done well over 100K, I was thinking of fitting a new tensioner as a preventive maintenance item... __________________ E92 pre-LCI 325i - Ohlins R&T; H&R spacers; M3 strut brace; Swift thrust sheets; 3 x chassis braces; diff brace; N53 V-brace; 034 subframe inserts; BMS clutch stop; BMS CDV; RE g/box mounts; Delrin shift bushes; Saikoumichi OCC; Cyba scoops; BMW Perf Exhaust; HEL s/steel brake hoses; M3 rear spoiler; Recaro Sportster CSs; M3 white dash LEDs; LED Angels; LED side repeaters; BMW Perf black grille; CSL reps; SSDD carbon diffuser; Monster Wrap black roof/clear front
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01-07-2021, 12:07 AM	#4
E92William Banned 2033 Rep 2,025 Posts Drives: 2008 E92 328xi Join Date: Nov 2019 Location: Miami iTrader: (0) Garage List 2008 BMW 328xi [0.00]	Any codes for it?
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