V6 Lower engine mount failure - is it unusual?

kehall · 18th December 2013, 08:52

Is it unusual (not like a Tom Jones song) for the lower engine mount to go or is it actually inevitable in all/most cases?

Only reason asking is the one on the 13 year old is still sound after 75K miles. Car only gets around town driving and we live down a very bumpy (unmade) road so maybe it's unusual this one hasn't gone yet!

I checked it when replacing exhaust and doesn't show any sign of splitting/failure anywhere that I can see or feel! Of course having said that now, that probably means it'll just disintegrate into a million pieces on the next trip!

sytneraudi10 · 18th December 2013, 08:56

Think the auto's are more gentle on it.

But I suppose even an auto driver could weaken one with plenty of full throttle starts.

lovema75 · 18th December 2013, 09:09

Stand at the front with the bonnet open, and get an assistant to selected drive - if the engine gives a noticeable leap, it's a sure sign the mount is split. Sometimes it's only visible when the bracket is removed from the car.

Braking is also improved if a faulty one is repaired, the weight of the engine can fight against you when braking, that's what put me on to it on my first 75.

I'm just about to do my third one now on my latest car - with it being manual it's clearly faulty.

chris75 · 18th December 2013, 16:34

Quote:

Originally Posted by kehall

Is it unusual (not like a Tom Jones song) for the lower engine mount to go or is it actually inevitable in all/most cases?

Only reason asking is the one on the 13 year old is still sound after 75K miles. Car only gets around town driving and we live down a very bumpy (unmade) road so maybe it's unusual this one hasn't gone yet!

I checked it when replacing exhaust and doesn't show any sign of splitting/failure anywhere that I can see or feel! Of course having said that now, that probably means it'll just disintegrate into a million pieces on the next trip!

I think it is pretty much inevitable

Mine looked fine when fitted but when I removed it the middle fell out !!!!

kehall · 19th December 2013, 09:14

Interesting stuff... the car is 2.5 manual, and has quite a few jerky gear changes (speaking as a passenger!), but really don't notice any untoward issues with the mount! Can't say theres any significant movement or knocking, even when starting.

Maybe just lucky, or it's failed in some fashion years ago and just isn't noticeable ?

Wondering if there's a rock solid test short of removal and inspection?

Lates · 19th December 2013, 09:23

Higher revs than normal and sharp (jolty) off the clutch will produce a knock through the bulkhead if the mount is scrap.

kehall · 19th December 2013, 09:44

Thanks Lates, no such problem so it's definitely within acceptable parameters then, until it eventually goes that is!

DMGRS · 19th December 2013, 11:37

I notice a slight 'shudder' when selecting 'drive' on my 75 diesel Auto - I know the mount is quite badly cracked (although not actually failed yet).
I've gone from a knackered mount to a fresh one before, the difference is lovely.

BruLan · 20th December 2013, 12:54

Quote:

Originally Posted by DMGRS

I notice a slight 'shudder' when selecting 'drive' on my 75 diesel Auto - I know the mount is quite badly cracked (although not actually failed yet).
I've gone from a knackered mount to a fresh one before, the difference is lovely.

How difficult is it to change ?

DMGRS · 20th December 2013, 12:56

Quote:

Originally Posted by BruLan

How difficult is it to change ?

Very easy on a diesel, as I understand its slightly more difficult on a V6.

18th December 2013, 08:52	#1
kehall Regular poster Rover 75 Saloon Join Date: Sep 2013 Location: Warrington Posts: 32 Thanks: 1 Thanked 9 Times in 4 Posts	V6 Lower engine mount failure - is it unusual? Is it unusual (not like a Tom Jones song) for the lower engine mount to go or is it actually inevitable in all/most cases? Only reason asking is the one on the 13 year old is still sound after 75K miles. Car only gets around town driving and we live down a very bumpy (unmade) road so maybe it's unusual this one hasn't gone yet! I checked it when replacing exhaust and doesn't show any sign of splitting/failure anywhere that I can see or feel! Of course having said that now, that probably means it'll just disintegrate into a million pieces on the next trip!

19th December 2013, 09:44	#7
kehall Regular poster Rover 75 Saloon Join Date: Sep 2013 Location: Warrington Posts: 32 Thanks: 1 Thanked 9 Times in 4 Posts	Thanks Lates, no such problem so it's definitely within acceptable parameters then, until it eventually goes that is! __________________ Done to date on the 2000W 2.5V6 Club SE... Plenum mod, fan brushes, degunk windscreen washer, reversing switch cleanup, boot gas struts, n/s side airbag sensor, n/s rear abs, n/s rear hub, electric mirror contacts cleanup, full exhaust, front springs & strut top bearings, VIS motors repaired/serviced, n/s passenger window regulator, fan motor replacement again, thermostat/inlet gasket mammoth job, shannon tube, lower rear engine mount. Still to do... O/S lower arm bushing

19th December 2013, 11:37	#8
DMGRS Discount MG Rover Spares Rover 75 CDTi, 2x MG ZS180 Join Date: Jun 2011 Location: Hythe, Southampton Posts: 11,361 Thanks: 456 Thanked 3,377 Times in 2,027 Posts	I notice a slight 'shudder' when selecting 'drive' on my 75 diesel Auto - I know the mount is quite badly cracked (although not actually failed yet). I've gone from a knackered mount to a fresh one before, the difference is lovely. __________________ Your trusted MG Rover specialist! Tel: 02380 001133 / Email: [email protected] We now have a 'chat' function on our site for even quicker replies. Give it a try! Remember - discount code FORUM5 for 5% off

18th December 2013, 08:56	#2
sytneraudi10 Banned Rover 75 Jap Spec V6, MG ZT 1.8T 160 Join Date: Nov 2013 Location: South Yorkshire Posts: 333 Thanks: 10 Thanked 33 Times in 33 Posts	Think the auto's are more gentle on it. But I suppose even an auto driver could weaken one with plenty of full throttle starts.

18th December 2013, 09:09	#3
lovema75 This is my second home 75 Tourer CDT Join Date: Dec 2011 Location: Enfield Posts: 3,925 Thanks: 63 Thanked 431 Times in 237 Posts	Stand at the front with the bonnet open, and get an assistant to selected drive - if the engine gives a noticeable leap, it's a sure sign the mount is split. Sometimes it's only visible when the bracket is removed from the car. Braking is also improved if a faulty one is repaired, the weight of the engine can fight against you when braking, that's what put me on to it on my first 75. I'm just about to do my third one now on my latest car - with it being manual it's clearly faulty.

19th December 2013, 09:14	#5
kehall Regular poster Rover 75 Saloon Join Date: Sep 2013 Location: Warrington Posts: 32 Thanks: 1 Thanked 9 Times in 4 Posts	Interesting stuff... the car is 2.5 manual, and has quite a few jerky gear changes (speaking as a passenger!), but really don't notice any untoward issues with the mount! Can't say theres any significant movement or knocking, even when starting. Maybe just lucky, or it's failed in some fashion years ago and just isn't noticeable ? Wondering if there's a rock solid test short of removal and inspection?

19th December 2013, 09:23	#6
Lates This is my second home Jaguar XE Join Date: Nov 2006 Location: Coventry Posts: 4,321 Thanks: 56 Thanked 59 Times in 55 Posts	Higher revs than normal and sharp (jolty) off the clutch will produce a knock through the bulkhead if the mount is scrap.