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

Heavy misfiring all of a sudden

Thread Tools
 
Search this Thread
 
Old Dec 2, 2015 | 12:44 AM
  #11  
toofaroffroad's Avatar
Winching
Joined: May 2011
Posts: 598
Likes: 44
From: Vancouver BC
Default

Yes I did, I moved a few things out of the way but it worked. I was actually surprised at how quick the process was. I think I spent the most time just checking and marking plug wires to make sure everything was in the right place.

I had found a tutorial on here somewhere which helped. I'm sure if you start searching you'll find it.
 
Reply
Old Dec 2, 2015 | 08:27 AM
  #12  
chubbs878's Avatar
Pro Wrench
Joined: Apr 2015
Posts: 1,387
Likes: 111
From: Dallas, TX
Default

that's crazy. I needed to replace an ignition wire and started fiddling around back there and thought, damn I'm going to have to pull this intake off and set myself back all kinds of time. but I called my brother up and he got it done as-is. I could hardly believe it. It was the number 4 wire on the passenger side which hooks into the bottom of the coil on the driver's side and he did have a hell of a time with it. But definitely do-able. Whoever hooked up the wire set before I bought it half-assed the installation because the coil bracket wasn't attached properly so they obviously got in there without pulling the intake as well. I'm thinking about getting the plenum gasket and unbuttoning it all so I can get it back together properly. I'm not good with tight spaces. I would drop the screw 3 or 4 times and say F-it!
 
Reply
Old Dec 2, 2015 | 09:14 AM
  #13  
Charlie_V's Avatar
Camel Trophy
Joined: Nov 2012
Posts: 3,717
Likes: 248
From: Longview, Texas
Default

Originally Posted by chubbs878
that's crazy. I needed to replace an ignition wire and started fiddling around back there and thought, damn I'm going to have to pull this intake off and set myself back all kinds of time. but I called my brother up and he got it done as-is. I could hardly believe it. It was the number 4 wire on the passenger side which hooks into the bottom of the coil on the driver's side and he did have a hell of a time with it. But definitely do-able. Whoever hooked up the wire set before I bought it half-assed the installation because the coil bracket wasn't attached properly so they obviously got in there without pulling the intake as well. I'm thinking about getting the plenum gasket and unbuttoning it all so I can get it back together properly. I'm not good with tight spaces. I would drop the screw 3 or 4 times and say F-it!
The really sweet part is trying to get the keepers back on the connectors at both sides of the coils if the coils have been out. Hahaha my connectors have been held in by friction for years. I'll find the keepers when I swap the transmission, I suppose.
 
Reply
Old Dec 2, 2015 | 06:39 PM
  #14  
chubbs878's Avatar
Pro Wrench
Joined: Apr 2015
Posts: 1,387
Likes: 111
From: Dallas, TX
Default

Originally Posted by Charlie_V
The really sweet part is trying to get the keepers back on the connectors at both sides of the coils if the coils have been out. Hahaha my connectors have been held in by friction for years. I'll find the keepers when I swap the transmission, I suppose.
Charles you never stop amazing me. I wish we lived closer so i could have a wrenching buddy. You do nothing but work on your Land Rovers..always juggling serious projects. You could do wires and coil packs in your sleep and not even drop a screw down the firewall. I must fix something new on my junk DAILY too. One of my blinkers started flashing funny on my way to work so I replaced the bulbs and hopefully water-proofed the one that keeps getting water inside. A fix-a-day keeps the over-haul away. Psshhh ya right, dang LR. I could go on forever about these things.
 
Reply
Old Dec 3, 2015 | 08:06 AM
  #15  
Charlie_V's Avatar
Camel Trophy
Joined: Nov 2012
Posts: 3,717
Likes: 248
From: Longview, Texas
Default

Originally Posted by chubbs878
Charles you never stop amazing me. I wish we lived closer so i could have a wrenching buddy. You do nothing but work on your Land Rovers..always juggling serious projects. You could do wires and coil packs in your sleep and not even drop a screw down the firewall. I must fix something new on my junk DAILY too. One of my blinkers started flashing funny on my way to work so I replaced the bulbs and hopefully water-proofed the one that keeps getting water inside. A fix-a-day keeps the over-haul away. Psshhh ya right, dang LR. I could go on forever about these things.
I do mess with that rover at least once a week. Hahaha. This week I've vowed to fix one thing a day! Last night was the front seal. After fixing that I found out that my oil pressure sender/switch/sensor is leaking. Ugh. Driver door lock is tonight. Then, then, then... Never ending. Keeps me out of trouble.
 
Reply
Old Dec 3, 2015 | 08:22 AM
  #16  
chubbs878's Avatar
Pro Wrench
Joined: Apr 2015
Posts: 1,387
Likes: 111
From: Dallas, TX
Default

Originally Posted by charlie_v
keeps me out of trouble.

exactly.
 
Reply
Old Dec 3, 2015 | 11:14 AM
  #17  
mln01's Avatar
Camel Trophy
Joined: Dec 2009
Posts: 3,883
Likes: 951
From: Charlotte
Default

Originally Posted by Charlie_V
The really sweet part is trying to get the keepers back on the connectors at both sides of the coils, if the coils have been out. Hahaha my connectors have been held in by friction for years. I'll find the keepers when I swap the transmission, I suppose.
If by "keepers" you mean the wire thingys that lock the connectors to the coils I realized after I removed mine all those years ago that they don't need to be removed at all -- you simply push on them and the prongs at the two ends of each keeper are levered out to release the connector. I say simply --- Hah! Nothing back there is simple.

As I've said before on this forum, I too removed wires and both coils without removing the upper intake. More amazing is that I got the coils back into position with every bolt and connector back in place correctly. Six years later I still consider that a proud achievement.

As I've also said before it helps to have girlie-man hands like I do. And to have a non-SAI truck.
 
Reply
Old Dec 4, 2015 | 07:28 PM
  #18  
Charlie_V's Avatar
Camel Trophy
Joined: Nov 2012
Posts: 3,717
Likes: 248
From: Longview, Texas
Default

Originally Posted by mln01
If by "keepers" you mean the wire thingys that lock the connectors to the coils I realized after I removed mine all those years ago that they don't need to be removed at all -- you simply push on them and the prongs at the two ends of each keeper are levered out to release the connector. I say simply --- Hah! Nothing back there is simple.

As I've said before on this forum, I too removed wires and both coils without removing the upper intake. More amazing is that I got the coils back into position with every bolt and connector back in place correctly. Six years later I still consider that a proud achievement.

As I've also said before it helps to have girlie-man hands like I do. And to have a non-SAI truck.
That's what I meant by keepers but I really call them losers because I've lost almost all of mine. I didn't know you could push the connectors back on with them in place. Ugh.
 
Reply
Old Dec 6, 2015 | 04:18 PM
  #19  
buick215's Avatar
Thread Starter
|
Winching
Joined: Jun 2010
Posts: 676
Likes: 0
From: Florida
Default

Update. I replaced all of the spark plugs with Bosch Platinum 4's and the misfire on cylinder 3 was still present. I replaced the plug wire that goes to cylinder 3 and the problem went away. Now when I have time I will be replacing the other plug wires along with a list of other things.
 
Reply
Old Dec 7, 2015 | 10:58 AM
  #20  
Charlie_V's Avatar
Camel Trophy
Joined: Nov 2012
Posts: 3,717
Likes: 248
From: Longview, Texas
Default

Originally Posted by buick215
Update. I replaced all of the spark plugs with Bosch Platinum 4's and the misfire on cylinder 3 was still present. I replaced the plug wire that goes to cylinder 3 and the problem went away. Now when I have time I will be replacing the other plug wires along with a list of other things.
Congratulations on solving it!
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Blakesrover
Retired - Private For Sale/Trade Classifieds
0
Feb 20, 2013 10:31 PM
booper169
Discovery I
1
Nov 9, 2010 09:10 AM
pierce2988
Discovery II
6
Sep 4, 2010 06:29 PM
Wanderer
General Tech Help
1
Jan 5, 2010 10:45 PM
Camdisco24
Discovery II
9
May 9, 2008 10:26 PM




All times are GMT -5. The time now is 01:36 PM.