kv6 poor tickover after heads refitted ?

chris75 · 3rd May 2019, 11:36

I've just put everything back after fitting a refurbed pair of cylinder heads to my kv6 , to cure valve stem oil seal leaks . It fired up straight away, initially with a mighty clatter from the cam followers but that has died away now , and I have done a 3 mile road test since .
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 .
What I am wondering , is it in fact correct that the ECU needs a few miles to "relearn " some settings ? I have heard opinions for both yes and no expressed , so would welcome any definitive views please before I start pulling things apart . I have access to a TOAF system so will be looking for any info from that when I get my hands on it !

vitesse · 3rd May 2019, 13:09

A recent post by MarinaBrian stated no learning with the exception of the autobox ECU.

However I’m sure I’ve seen somewhere in TOAF sub-section engine something about removing adaptive values.

Equally confused

kaiser · 3rd May 2019, 13:15

Cam timing wrong.
Ignition leads swapped.
Air leaks.
Injector (wire damaged?)

Sheraton · 3rd May 2019, 13:20

Quote:

Originally Posted by chris75;2731273 [B

a mighty clatter from the cam followers[/B]

This would concern me - after fitting the Cylinder Heads/Belts did you Rotate the Crank ?

Paul.

chris75 · 3rd May 2019, 14:48

Quote:

Originally Posted by kaiser

Cam timing wrong.
Ignition leads swapped.
Air leaks.
Injector (wire damaged?)

Thanks Kaiser . I'm happy the timing is right . I used the setting tools

Car runs well on the road so the leads are ok ….
Maybe air leaks …
Damaged wires maybe ……..

Quote:

Originally Posted by Sheraton

This would concern me - after fitting the Cylinder Heads/Belts did you Rotate the Crank ?
Paul.

Yes , the engine was rotated twice after timing and quite a few times besides before firing up . I don't think the clatter is unusual as the followers are initially filling up with oil . Quiet now

chris75 · 3rd May 2019, 18:58

Things move on ! My fault code reader gave P0302 , which it describes as generic - misfire on cylinder 2 . If they count cylinders the way Rover do ( ? ) then this is the front cylinder on the back or right hand bank ; bother , why couldn't it be the easier to access front bank

I got my TOAF back from the chap I lent it to , but now it doesn't want to speak to my car . It has always worked in the past but now it confirms connection but can't find any modules !
I've taken another test drive , and it drives ok but does have a rough tickover . However , when I got back home and switched off then restarted I got a Charging error warning on the dash . I switched off , checked a few things and when I tried to restart , battery was flat !

So I don't know what has happened there but the battery is on charge overnight . I'm off for a pint ………….

kaiser · 3rd May 2019, 19:45

Quote:

Originally Posted by chris75

Thing............ is on charge overnight . I'm off for a pint ………….

Proof, if ever one was needed, Rovers drive you to drink!

trikey · 3rd May 2019, 19:52

I would be very concerned about the clattering noise.

kaiser · 3rd May 2019, 19:58

Quote:

Originally Posted by trikey

I would be very concerned about the clattering noise.

why?............... It has quietened down, hydraulic lifters are noisy if removed and replaced for the initial start up. Is usually absolutely harmless.

chris75 · 3rd May 2019, 23:10

Quote:

Originally Posted by kaiser

why?............... It has quietened down, hydraulic lifters are noisy if removed and replaced for the initial start up. Is usually absolutely harmless.

Agreed , as I said .

Quote:

Originally Posted by trikey

I would be very concerned about the clattering noise.

Can you expand on your concern , given that the noise went away by the time the engine had warmed up ? All views are welcome at this time

3rd May 2019, 11:36	#1
chris75 same car since 2005 2001 Rover 75 2.0 v6 Connoisseur Saloon Join Date: Nov 2006 Location: Ellesmere Port , Cheshire Posts: 3,811 Thanks: 379 Thanked 549 Times in 466 Posts	kv6 poor tickover after heads refitted ? I've just put everything back after fitting a refurbed pair of cylinder heads to my kv6 , to cure valve stem oil seal leaks . It fired up straight away, initially with a mighty clatter from the cam followers but that has died away now , and I have done a 3 mile road test since . 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 . What I am wondering , is it in fact correct that the ECU needs a few miles to "relearn " some settings ? I have heard opinions for both yes and no expressed , so would welcome any definitive views please before I start pulling things apart . I have access to a TOAF system so will be looking for any info from that when I get my hands on it ! __________________ Who said it was simples ?

3rd May 2019, 13:15	#3
kaiser This is my second home 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	Cam timing wrong. Ignition leads swapped. Air leaks. Injector (wire damaged?) __________________ Worth his V8 in gold

3rd May 2019, 18:58	#6
chris75 same car since 2005 2001 Rover 75 2.0 v6 Connoisseur Saloon Join Date: Nov 2006 Location: Ellesmere Port , Cheshire Posts: 3,811 Thanks: 379 Thanked 549 Times in 466 Posts	Things move on ! My fault code reader gave P0302 , which it describes as generic - misfire on cylinder 2 . If they count cylinders the way Rover do ( ? ) then this is the front cylinder on the back or right hand bank ; bother , why couldn't it be the easier to access front bank I got my TOAF back from the chap I lent it to , but now it doesn't want to speak to my car . It has always worked in the past but now it confirms connection but can't find any modules ! I've taken another test drive , and it drives ok but does have a rough tickover . However , when I got back home and switched off then restarted I got a Charging error warning on the dash . I switched off , checked a few things and when I tried to restart , battery was flat ! So I don't know what has happened there but the battery is on charge overnight . I'm off for a pint …………. __________________ Who said it was simples ?

3rd May 2019, 19:52	#8
trikey Premium Trader Rover 75 Join Date: Nov 2010 Location: Devon Posts: 33,765 Thanks: 8,837 Thanked 14,831 Times in 8,030 Posts	I would be very concerned about the clattering noise. __________________ Lest we forget..

3rd May 2019, 13:09	#2
vitesse I really should get out more....... Rover 75 Saloon Join Date: Jul 2011 Location: Gävle Posts: 2,528 Thanks: 395 Thanked 823 Times in 652 Posts	A recent post by MarinaBrian stated no learning with the exception of the autobox ECU. However I’m sure I’ve seen somewhere in TOAF sub-section engine something about removing adaptive values. Equally confused