Go Back   The 75 and ZT Owners Club Forums > The 75 and ZT Owners Club Forums > Technical Help Forum
Register FAQ Image Gallery Members List Calendar Mark Forums Read
Notices

Reply
 
Thread Tools Display Modes
Old 2nd January 2010, 13:15   #1
wiltshire75
Avid contributor
 
wiltshire75's Avatar
 
Rover 75 v6 2.5

Join Date: Dec 2009
Location: Chippenham
Posts: 151
Thanks: 0
Thanked 0 Times in 0 Posts
Default Help please! Rover 75 2.5 v6 timing belt

hi,

ive had a rover 75 v6 sat on my driver for sometime and really want to get it going.

i plugged it in and it had 2 faults, multiple misfire and system too rich.

looking under the bonnet it was clear that the upper timing belt casing on the camshaft pulley was wobbling as you tried to start it up. having removed the casing you could visibly see the pulley wobbling as if the securing washer bolt has been misthreaded in somewhere and the pulley isnt rotating properly.

before i found this when you tried turning the engine it would catch but stall after a second on two. the person i purchased it off said it just cut out on them.

suggestions on where to go next.....
wiltshire75 is offline   Reply With Quote
Old 2nd January 2010, 13:20   #2
stocktake
Vis Whiz
 
stocktake's Avatar
 
Rover 75 2.5 auto Saloon

Join Date: Jun 2007
Location: LEEDS
Posts: 20,582
Thanks: 2,057
Thanked 3,056 Times in 1,621 Posts
Default

Afraid that doesnt sound good for the engine. Cambelt change on a KV6 is rather involved. Garages charge upwards of £550 to change them, I would think any apparent problem with a cam will involve the changing and setting up of the cam belts. If one of the cam pulley's is wobbling when turning, thats not good, may have snapped.


would suggest getting the engine into a safe locked position and check timing marks etc
__________________
Dave...



Lost a few stones and a Gall Bladder and part of a bile duct and all of my dignity in the suppository incident

Last edited by stocktake; 2nd January 2010 at 17:13..
stocktake is offline   Reply With Quote
Old 2nd January 2010, 13:23   #3
2Diesels
Trader
 
ZT 260SE, Connoisseur CDT

Join Date: Mar 2009
Location: The Ancient Shire Of Bedlington
Posts: 12,597
Thanks: 68
Thanked 506 Times in 305 Posts
Default

Could this be yet another snapped camshaft????
I hope it's not of course but the wobbly pulley makes me think it could be
2Diesels is offline   Reply With Quote
Old 2nd January 2010, 16:56   #4
kaiser
This is my second home
 
kaiser's Avatar
 
75 Tourer 2.5 Auto, 1.8T, 75V8ZT

Join Date: Jun 2007
Location: Johannesburg ZA
Posts: 6,200
Thanks: 1
Thanked 859 Times in 613 Posts
Default

I would tend to agree, something broken, if not the shaft, then the pulley. Rotate to safe position, insert pin through bell housing, check, and if need be, dismantle and check.
Enjoy.
I seem to re-call a recent similar complaint, either on this or the other forum. Can't remember a result though. Might be worth a search.
kaiser is offline   Reply With Quote
Old 2nd January 2010, 16:57   #5
wiltshire75
Avid contributor
 
wiltshire75's Avatar
 
Rover 75 v6 2.5

Join Date: Dec 2009
Location: Chippenham
Posts: 151
Thanks: 0
Thanked 0 Times in 0 Posts
Default hmm interesting....

curse of the snapped camshaft you say?? id say youre spot on, have you got any links to any other cases of this?

ive now taken the pulley off and the end of the camshaft has snapped partially which in turn has worn part of the inner pulley centre. therefore im going to have to put a new pulley on.

however my mechanic friend has suggested that the (excuse if i use incorrect terms) lower camshaft can be swopped with the damaged top one as the end in question isnt being used on the lower one and therefore the limited damage will not affect it. the upper one will then be in perfect condition with the new pulley on it. we have already stripped down to this point before light stopped play.

im literally just about to order the new pulley now...

ps: it looks like this cars barely seen an oil change given the 'chrismas pudding' weve been scooping out!!
wiltshire75 is offline   Reply With Quote
Old 2nd January 2010, 16:58   #6
wiltshire75
Avid contributor
 
wiltshire75's Avatar
 
Rover 75 v6 2.5

Join Date: Dec 2009
Location: Chippenham
Posts: 151
Thanks: 0
Thanked 0 Times in 0 Posts
Default

kaiser - you're right - both were broken!
wiltshire75 is offline   Reply With Quote
Old 2nd January 2010, 17:01   #7
2Diesels
Trader
 
ZT 260SE, Connoisseur CDT

Join Date: Mar 2009
Location: The Ancient Shire Of Bedlington
Posts: 12,597
Thanks: 68
Thanked 506 Times in 305 Posts
Default

I'm not a V6 man so couldn't say as to wether or not you could swap cams but there's been a couple of cases of snapped exhaust cams just lately, I'm not suggesting for one minute it's a common fault as these 2 are the only ones I've come across. I'll have a look for a link or 2
2Diesels is offline   Reply With Quote
Old 2nd January 2010, 17:03   #8
2Diesels
Trader
 
ZT 260SE, Connoisseur CDT

Join Date: Mar 2009
Location: The Ancient Shire Of Bedlington
Posts: 12,597
Thanks: 68
Thanked 506 Times in 305 Posts
Default

Here's one we dont find out until later in the thread but have a read
http://www.the75andztclub.co.uk/foru...ad.php?t=48220
2Diesels is offline   Reply With Quote
Old 2nd January 2010, 17:12   #9
stocktake
Vis Whiz
 
stocktake's Avatar
 
Rover 75 2.5 auto Saloon

Join Date: Jun 2007
Location: LEEDS
Posts: 20,582
Thanks: 2,057
Thanked 3,056 Times in 1,621 Posts
Default

Don't recon much for the valves chances either.
__________________
Dave...



Lost a few stones and a Gall Bladder and part of a bile duct and all of my dignity in the suppository incident
stocktake is offline   Reply With Quote
Old 2nd January 2010, 17:12   #10
chris75
same car since 2005
 
chris75's Avatar
 
2001 Rover 75 2.0 v6 Connoisseur Saloon

Join Date: Nov 2006
Location: Ellesmere Port , Cheshire
Posts: 3,810
Thanks: 379
Thanked 549 Times in 466 Posts
Default

Just for info, whilst both the inlet and exhaust camshafts look the same they do have different part numbers . The profiles on the cams may well be different if you are still thinking of swapping them
Please post some photos of the damaged shaft ends if possible ? I'm sure you've got a few of us curious now !
__________________
Who said it was simples ?
chris75 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 15:16.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright © 2006-2023, The Rover 75 & MG ZT Owners Club Ltd