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 4th May 2019, 07:23   #11
suffolk boy
This is my second home
 
fiat panda

Join Date: Sep 2009
Location: haverhill
Posts: 6,720
Thanks: 96
Thanked 586 Times in 526 Posts
Default

check the easy things first such as a duff spark plug
__________________
fiat panda 1.2 eco
suffolk boy is offline   Reply With Quote
Old 4th May 2019, 07:43   #12
SD1too
Doesn't do things by halves
 
SD1too's Avatar
 
Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model.

Join Date: Mar 2007
Location: Former Middlesex
Posts: 20,265
Thanks: 1,587
Thanked 3,749 Times in 3,181 Posts
Default

Quote:
Originally Posted by chris75 View Post
I am left with an unsteady tickover , and sounds like a misfire , although it runs well once I move off and pick up the revs .
Hi Chris,

I had these symptoms on my KV6 a couple of months ago. I found carbon deposits on a LH bank sparking plug connector. After cleaning the fault cleared, but I wondered what was causing this.

Weeks later it returned with a vengeance. Intermittently, the engine would run lumpily for an entire journey then, when it was next started, smooth running would be restored. Next it worsened to the extent that eventually the engine wouldn't start.

The answer was a failed ignition coil on no. 5.
Quote:
Originally Posted by chris75 View Post
... misfire on cylinder 2 .
If you trust your diagnostic tool then maybe check that no. 2's coil connector is pushed fully home onto the plug, as you've been working in this area (I know, easier said than done! ). Having said that, I had the assistance of T4 which wasn't exactly ideal. It initially correctly identified no. 5 as misfiring but when we selected further detail it started referring to no. 2. .
There was no problem with no. 2 on my car.

Bu the way, during fault finding, my OEM plug lead connectors on the LH bank broke into fragments. This wasn't unexpected since they are 30 years old. The genuine Bremi replacements are an improved design (and recommended if you have this early arrangement) but the new set didn't make any difference to the fault condition.

Simon
__________________
"Whatever is rightly done, however humble, is noble."
Sir Henry Royce.
SD1too is offline   Reply With Quote
Old 4th May 2019, 14:56   #13
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

Update on the flat battery part of my problems …..
charged it up overnight , refitted and the car fired up straightaway . I switched it off after allowing it to warm up , then maybe 5 mins later went to restart it , and it was flat again , wouldn't start .
I have tried to measure the drain with everything switched off , using the method here https://the75andztclub.co.uk/forum/s...d.php?t=167111 ,
multimeter between the fusebox terminal and the positive on the battery, and get an initial fluctuating reading between 0.5A and 0.8A which after some 20 seconds drops to 0.29A .
When I can start the car again I will check the alternator output voltage
The battery had never given any bother prior to my doing this recent work on the engine , but it is some 9 years old . Could it just have had enough and needs replacing ?
__________________
Who said it was simples ?
chris75 is offline   Reply With Quote
Old 4th May 2019, 15:57   #14
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

Yes, it most likely just has had enough.
If you had a load tester, you would be able to verify this.
You can have a battery that will show 12V plus on an multi tester, but as soon as you put a load on it, that figure drops. Where it drops to tells you if faulty or not.
I bet 95% your battery has had it.
__________________
Worth his V8 in gold
kaiser is offline   Reply With Quote
Old 4th May 2019, 20:19   #15
trikey
Premium Trader
 
trikey's Avatar
 
Rover 75

Join Date: Nov 2010
Location: Devon
Posts: 33,711
Thanks: 8,837
Thanked 14,831 Times in 8,030 Posts
Default

Why would I be concerned about a strange noise following major engine work?

I think you have answered your own question by posting the question on here. If it was not concerning you then you wouldn’t have put up a post.

Any odd noise should be investigated, if you convince yourself that all will be well without checking, then it may come back to bite you in the bum.
__________________
Lest we forget..
trikey is offline   Reply With Quote
Old 4th May 2019, 21:26   #16
COLVERT
This is my second home
 
R75 Saloon.

Join Date: Feb 2009
Location: France/or Devon.
Posts: 14,003
Thanks: 3,851
Thanked 2,167 Times in 1,816 Posts
Default

Quote:
Originally Posted by kaiser View Post
Yes, it most likely just has had enough.
If you had a load tester, you would be able to verify this.
You can have a battery that will show 12V plus on an multi tester, but as soon as you put a load on it, that figure drops. Where it drops to tells you if faulty or not.
I bet 95% your battery has had it.
I'm with Kaiser. Your battery is DED.---

And low voltage will make your car do all sorts of funny things.---
COLVERT is offline   Reply With Quote
Old 5th May 2019, 05:30   #17
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

Quote:
Originally Posted by trikey View Post
Why would I be concerned about a strange noise following major engine work?

I think you have answered your own question by posting the question on here. If it was not concerning you then you wouldn’t have put up a post.

Any odd noise should be investigated, if you convince yourself that all will be well without checking, then it may come back to bite you in the bum.
You are not really saying anything here. You said you would be worried, which to me, at least, would indicate you would be able to substantiate your thinking with a bit of intelligent input. This is waffle.
My gardener can give this type of advice.
__________________
Worth his V8 in gold
kaiser is offline   Reply With Quote
Old 5th May 2019, 07:50   #18
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

Quote:
Originally Posted by chris75 View Post
Update on the flat battery part of my problems …..
charged it up overnight , refitted and the car fired up straightaway . I switched it off after allowing it to warm up , then maybe 5 mins later went to restart it , and it was flat again , wouldn't start .
I have tried to measure the drain with everything switched off , using the method here https://the75andztclub.co.uk/forum/s...d.php?t=167111 ,
multimeter between the fusebox terminal and the positive on the battery, and get an initial fluctuating reading between 0.5A and 0.8A which after some 20 seconds drops to 0.29A .
When I can start the car again I will check the alternator output voltage
The battery had never given any bother prior to my doing this recent work on the engine , but it is some 9 years old . Could it just have had enough and needs replacing ?
The method shown in the link does say that it wouldn't check the starter and of alternator. There is a strong possibility there is a discharge through your alternator given the no charge light you experienced.
__________________
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 5th May 2019, 10:05   #19
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

Quote:
Originally Posted by trikey View Post
Why would I be concerned about a strange noise following major engine work? ……..Any odd noise should be investigated, if you convince yourself that all will be well without checking, then it may come back to bite you in the bum.
I certainly won't disagree with that , Trikey , but as said the tappet noise has gone now . I half expected the noise on startup whilst the followers were refilling with oil , and understand that it is common after a refit
__________________
Who said it was simples ?
chris75 is offline   Reply With Quote
Old 5th May 2019, 10:05   #20
milford man
Gets stuck in
 
Jaguar XE Prestige

Join Date: Oct 2010
Location: Coventry
Posts: 540
Thanks: 155
Thanked 109 Times in 101 Posts
Default

Quote:
Originally Posted by chris75 View Post
Update on the flat battery part of my problems …..
charged it up overnight , refitted and the car fired up straightaway . I switched it off after allowing it to warm up , then maybe 5 mins later went to restart it , and it was flat again , wouldn't start .
I have tried to measure the drain with everything switched off , using the method here https://the75andztclub.co.uk/forum/s...d.php?t=167111 ,
multimeter between the fusebox terminal and the positive on the battery, and get an initial fluctuating reading between 0.5A and 0.8A which after some 20 seconds drops to 0.29A .
When I can start the car again I will check the alternator output voltage
The battery had never given any bother prior to my doing this recent work on the engine , but it is some 9 years old . Could it just have had enough and needs replacing ?
If the battery was fully charged and in good condition it would have to be a massive load on it to drain it in 5 minutes. Get a new battery after nine years it owes you nothing.


Regards John
milford man 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 05:23.


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