Discovery II Talk about the Land Rover Discovery II within.
Sponsored by:
Sponsored by:

Scratching my head help pls

Thread Tools
 
Search this Thread
 
Old Apr 29, 2025 | 10:24 AM
  #1  
Disco 2 OilTurds's Avatar
Thread Starter
|
Overlanding
Joined: Apr 2025
Posts: 24
Likes: 3
Default Scratching my head help pls

Hello, I recently changed my coils plugs and wires . Hooked all back up, followed several diagrams for plugs to make sure they were all correct . fired back up to watch and listen to it sputter and die horribly ! Sounds like wires were crossed but it’s impossible as I have checked 5-6 times taking off manifold and putting old wires and coils back on for Same results .. ran fine before I swapped everything out besides a small misfire in cylinder #2 so I decided to do the whole service to save a headache in the future . But now I’m at a dead end and utterly disappointed in myself . Also plugs smell and look like they are drenched in gas from uburned fuel going into cats ! Tried to crank several times but just won’t run but a second and sputter put put poot cut off . Help me rover gods ! I don’t want my rover to leave !
 
Reply
Old Apr 29, 2025 | 10:55 AM
  #2  
ahab's Avatar
Pro Wrench
Joined: Apr 2018
Posts: 1,516
Likes: 442
From: SE PA
Default

Any chance you've got your diagram backwards? This is what you'd see if you were able to see them from the driver's seat in the stock location.


 
Reply
Old Apr 29, 2025 | 11:18 AM
  #3  
Disco 2 OilTurds's Avatar
Thread Starter
|
Overlanding
Joined: Apr 2025
Posts: 24
Likes: 3
Default

Originally Posted by ahab
Any chance you've got your diagram backwards? This is what you'd see if you were able to see them from the driver's seat in the stock location.


yes correct and looking from the front of the engine towards the rear , coil 8 is top left and coil 1 is top right ?
 
Reply
Old Apr 29, 2025 | 02:36 PM
  #4  
ahab's Avatar
Pro Wrench
Joined: Apr 2018
Posts: 1,516
Likes: 442
From: SE PA
Default

Plug 8 and Plug 1, not coil, but yes you have it right.
 
Reply
Old Apr 29, 2025 | 04:29 PM
  #5  
Disco 2 OilTurds's Avatar
Thread Starter
|
Overlanding
Joined: Apr 2025
Posts: 24
Likes: 3
Default

Ok update : I reworked the wires again and sure enough it fired right up but had a constant misfire only on cylinder 5 . Enough to make it still run pretty rough and make the check engine light flash . It was put put and die now it’s sounding like a tractor . I even swapped out the wire with one of the old ones and put two of the the old champion spark plugs to see if it would shape up but the same . Again this truck ran smooth as butter before my incompetence got a hold of it …. Also it has the new coils in but I assume All cylinders would misfire if the coil had an issue . Thank you for replying
 
Reply
Old Apr 29, 2025 | 04:30 PM
  #6  
Jensen Vermont Stenberg's Avatar
Three Wheeling
Joined: Jul 2019
Posts: 57
Likes: 7
Default

Start with basics, pull a plug and make sure that you are still getting spark from the plugs. Visual confirmation is worth way more than speculation. You are getting fuel so rule that one out (for now).

if no spark, check fuses. You can mess things up digging into them 😉 it is just part of digging into this stuff.
 
Reply
Old Apr 29, 2025 | 05:16 PM
  #7  
ahab's Avatar
Pro Wrench
Joined: Apr 2018
Posts: 1,516
Likes: 442
From: SE PA
Default

There's always a chance you got a bad coil pack. Apparently you wouldn't be the first here. You can always try swapping the old parts back in to see if there's a change.
 
Reply
Old Apr 29, 2025 | 06:55 PM
  #8  
Disco 2 OilTurds's Avatar
Thread Starter
|
Overlanding
Joined: Apr 2025
Posts: 24
Likes: 3
Default

Yep that’s what I’m thinking as well . I’m ashamed to admit the parts are of unknown origins … lol . I cheaped out hoping it would buy me time to get real oem Bosch coils and plugs . So that’s what I’m doing in the morning and will hopefully have better news to share with the Land Rover community! I’ll report back after the swap . Oh I have oem wires new so I’m sure it’s between the coils and crappy plugs
 
Reply
Old Apr 29, 2025 | 07:08 PM
  #9  
disco96sd's Avatar
Recovery Vehicle
Joined: Dec 2019
Posts: 1,004
Likes: 200
Default

most of the parts come from china - they are cheap crap made by communist kids
 
Reply
Old Apr 29, 2025 | 08:05 PM
  #10  
Extinct's Avatar
Baja
Joined: Feb 2013
Posts: 5,264
Likes: 1,809
From: Lynchburg VA
Default

If you have it down to only a handfull of cylinder misfires, swap the coil left to right, see if it follows the coil. Then swap wires between 5 and 6, see if it folllows. Swap the plug from #5 to #3, see if it follows.
 
Reply



All times are GMT -5. The time now is 02:18 AM.