Kv6 coils

Mick Brownhill · 7th April 2023, 13:47

Can someone tell me which coil/plug is number 3. I have searched everywhere and no joy. My number 3 is misfiring so I suspect its the coil. Hopefully at the front of the engine.
Thanks for putting me out of my misery

stocktake · 7th April 2023, 14:58

Here you go Mick,
facing the car
Front Bank (left to right) 1,3,5
Rear Bank (left to right) 2,4,6
Firing Order 1,6,5,4,3,2

vitesse · 7th April 2023, 18:46

Just a brief comment, something in my memory about the coils not being arranged in logical sequence ie 1 3 5. If the misfire is on no.3 cylinder trace the HT lead back to the supplying coil, you may well find it's the first of the three coils (viewing as per Stocktake) or the first coil on the left, front bank.

Regards

Popcorn · 7th April 2023, 21:59

Thought they were stick coils not coils with HT leads

BigRuss · 7th April 2023, 22:10

Quote:

Originally Posted by Popcorn

Thought they were stick coils not coils with HT leads

The front coils on the earlier cars have got HT leads

Russ

roverbarmy · 8th April 2023, 10:39

...... and the HT leads have a habit of breaking down and self disconnect from the plug top intermittently. If they haven't been done, change them all. The difference is amazing!

Sent from my SM-A127F using Tapatalk

xsport · 27th April 2023, 16:21

on some of the early kv6 models coil leads were routed incorrectly . either number one or number 3 were not correctly positioned. even the H.T leads were the wrong length and were fitted incorrectly to their relative length positions.

Mick Brownhill · 16th May 2023, 19:51

Just to update and thank you for the input.
Diagnostic has thrown up a code for my misfire. Initially all codes cleared but one came back P0352 - ignition coil B primary control circuit/open.
Coil has been replaced.
Can anyone shed light on a fix.
Cheers

SD1too · 17th May 2023, 13:32

Quote:

Originally Posted by Mick Brownhill

... P0352 - ignition coil B primary control circuit/open.
Coil has been replaced.
Can anyone shed light on a fix.

Hello Mick,

RAVE's description of P0352 is different to yours. It says there's a fault in the primary or secondary circuit of ignition coil no. 2.

As you say that coil has been replaced, swap it for no. 4 and see if the fault remains on cylinder no. 2 or moves to 4.

Simon

Typhoon190 · 17th May 2023, 18:44

Just a thought, and maybe way off but there is an earth lead coming from the engine loom that connects to the lower inlet manifold via one of the coil fixings.

Perhaps check this as well.

7th April 2023, 13:47	#1
Mick Brownhill Regional Secretary, Yorkshire & North Lincolnshire 75 Saloon Join Date: May 2022 Location: Sheffield Posts: 342 Thanks: 119 Thanked 52 Times in 28 Posts	Kv6 coils Can someone tell me which coil/plug is number 3. I have searched everywhere and no joy. My number 3 is misfiring so I suspect its the coil. Hopefully at the front of the engine. Thanks for putting me out of my misery

7th April 2023, 14:58	#2
stocktake Vis Whiz Rover 75 2.5 auto Saloon Join Date: Jun 2007 Location: LEEDS Posts: 20,591 Thanks: 2,057 Thanked 3,056 Times in 1,621 Posts	Here you go Mick, facing the car Front Bank (left to right) 1,3,5 Rear Bank (left to right) 2,4,6 Firing Order 1,6,5,4,3,2 __________________ Dave... Lost a few stones and a Gall Bladder and part of a bile duct and all of my dignity in the suppository incident

8th April 2023, 10:39	#6
roverbarmy This is my second home Roverless + 1.7D Sportage Join Date: Aug 2014 Location: East Norfolk Posts: 7,050 Thanks: 729 Thanked 2,021 Times in 1,449 Posts	...... and the HT leads have a habit of breaking down and self disconnect from the plug top intermittently. If they haven't been done, change them all. The difference is amazing! Sent from my SM-A127F using Tapatalk __________________ Oil in my veins!

16th May 2023, 19:51	#8
Mick Brownhill Regional Secretary, Yorkshire & North Lincolnshire 75 Saloon Join Date: May 2022 Location: Sheffield Posts: 342 Thanks: 119 Thanked 52 Times in 28 Posts	KV6 Coils Just to update and thank you for the input. Diagnostic has thrown up a code for my misfire. Initially all codes cleared but one came back P0352 - ignition coil B primary control circuit/open. Coil has been replaced. Can anyone shed light on a fix. Cheers

7th April 2023, 18:46	#3
vitesse I really should get out more....... Rover 75 Saloon Join Date: Jul 2011 Location: Gävle Posts: 2,534 Thanks: 395 Thanked 823 Times in 652 Posts	Just a brief comment, something in my memory about the coils not being arranged in logical sequence ie 1 3 5. If the misfire is on no.3 cylinder trace the HT lead back to the supplying coil, you may well find it's the first of the three coils (viewing as per Stocktake) or the first coil on the left, front bank. Regards

7th April 2023, 21:59	#4
Popcorn Loves to post 55 cdti tourer slush box executive grill Join Date: Feb 2022 Location: Sheffield Posts: 380 Thanks: 40 Thanked 85 Times in 72 Posts	Thought they were stick coils not coils with HT leads

27th April 2023, 16:21	#7
xsport Posted a thing or two rover 75 club se Join Date: Apr 2011 Location: Leicester Posts: 1,659 Thanks: 358 Thanked 419 Times in 310 Posts	on some of the early kv6 models coil leads were routed incorrectly . either number one or number 3 were not correctly positioned. even the H.T leads were the wrong length and were fitted incorrectly to their relative length positions.

17th May 2023, 18:44	#10
Typhoon190 This is my second home MG ZT-T 190 Monogram Typhoon Join Date: Jan 2009 Location: Oxfordshire Posts: 4,707 Thanks: 328 Thanked 557 Times in 443 Posts	Just a thought, and maybe way off but there is an earth lead coming from the engine loom that connects to the lower inlet manifold via one of the coil fixings. Perhaps check this as well.