Fordmods Logo

NL V8 missing/running rough at idle & under load 

 

Page 1 of 1 [ 12 posts ] 

 
 Post subject: NL V8 missing/running rough at idle & under load
Posted: Sat Apr 02, 2011 6:38 pm 
Parts Gopher
Offline
User avatar

Age: 41

Posts: 81

Joined: 7th Jun 2010

Gallery: 3 images

Ride: NL Fairlane V8

Location: Sydney
NSW, Australia

Evening guys,

I drove into the city this morning, pulled up to drop my partner off and as I wasleaving to come home, all of a sudden the engine started running slightly rough, like it was missing or something. I was able to get the Fairlane home. Arriving home, it was considerbly worse.

I ran a ECU code check which returned a 111, a conducted a KOER test which also passed. And then a V8 Balance test which passed too...
The first thing I thought was ok, it's some part of the ignition. While the engine was running, I could hear the missing worse at the tail pipe and also by gently reving the engine showed it was getting worse and I looked out for any arching from the leads etc.

Here, I turned the engine off. I pulled the dizzy cap off and found the rotor button was quite heavily burnt and scared, and the button underneath the top of the cap was too. I've cleaned these up, but I thought possibly the ignition coil is no good... I've attached some photos to show you what the coil looks like... both sides of it have a white residue... which to me makes me think it's been arching out for a while...

Thoughts? Before I lash out $75 for a new one!

 

 

Attachments:
IMG_0696.JPG
IMG_0696.JPG [ 233.94 KiB | Viewed 290 times ]
IMG_0698.JPG
IMG_0698.JPG [ 280.84 KiB | Viewed 254 times ]

 

_________________

'98 NL Fairlane Ghia 5.0l

Top
 Profile  
 
 
 Post subject: Re: NL V8 missing/running rough at idle & under load
Posted: Sat Apr 02, 2011 7:45 pm 
Getting Side Ways
Offline
User avatar

Posts: 6432

Joined: 5th Nov 2004

Gallery: 6 images

Just a thought but if you believe it may be missing, perhaps get someone to sit in the car, select drive and press the accelerator lightly ( foot on the brake of course! ) to get the RPM up - maybe about 1,200 RPM, to provide load and then pull a lead off the dizzy one at a time to spot which cylinder may not be firing. Mind you, take care not to zap yourself pulling a lead off the dizzy. :wink:

 

_________________

5.6L of carbon footprint.

Top
 Profile  
 
 
 Post subject: Re: NL V8 missing/running rough at idle & under load
Posted: Sun Apr 03, 2011 12:35 pm 
Parts Gopher
Offline
User avatar

Age: 41

Posts: 81

Joined: 7th Jun 2010

Gallery: 3 images

Ride: NL Fairlane V8

Location: Sydney
NSW, Australia

{USERNAME} wrote:
Just a thought but if you believe it may be missing, perhaps get someone to sit in the car, select drive and press the accelerator lightly ( foot on the brake of course! ) to get the RPM up - maybe about 1,200 RPM, to provide load and then pull a lead off the dizzy one at a time to spot which cylinder may not be firing. Mind you, take care not to zap yourself pulling a lead off the dizzy. :wink:


It was the 4th cylinder ignition lead. Was resting against the exhaust manifold and the silicon coating has cracked/melted away... :roll:

So for the meantime, I have covered it with electrical tape. Started her up and now fine! Been down to Repco & Supercheap. Can't buy single leads but have to buy them as a set (the boot/spark plug end is right angled)...

What's the best brand? Bosch, Eagle, Top Gun, Champion... so many... ?

Do you think the ignition coil is of concern still? Since all the white residue?

 

_________________

'98 NL Fairlane Ghia 5.0l

Top
 Profile  
 
 
 Post subject: Re: NL V8 missing/running rough at idle & under load
Posted: Sun Apr 03, 2011 1:09 pm 
Getting Side Ways
Offline

Age: 48

Posts: 4604

Joined: 23rd Nov 2006

Gallery: 4 images

Ride: 5.0 AU's and 5.0 Maverick

Power: 139 rwkw

Location: Sydney West
NSW, Australia

Best way to check to see what is rooted in the ignition system is to wait until night , park the car somewhere completley in blackness and lift the bonnet with the car running.
Stuff that is leaking voltage will be giving you a nice light show all over the place. You wont be able to miss it.

 

_________________

{USERNAME} wrote:
More people paid for a ride in a VT commodore then an AU Falcon so the VT is superior.
Based on that fact my Mum is the best around!

Top
 Profile  
 
 
 Post subject: Re: NL V8 missing/running rough at idle & under load
Posted: Sun Apr 03, 2011 2:04 pm 
Getting Side Ways
Offline

Posts: 2059

Joined: 3rd Apr 2008

Ride: EF Fairmont, XG Ute

Eagle leads are good, otherwise get ICE ones if you want to spend a bit more. Bosch should be good, Champion is now called Fuel Miser and should be good too. I'd get the thicker (10mm?) Eagle ones, well priced and should last ages.

Top Gun is overpriced s**t. Absolutely terrible, I had a new one fall apart in my hand when I pulled it off a plug. Not cheap either. Stay well away!
Top
 Profile  
 
 
 Post subject: Re: NL V8 missing/running rough at idle & under load
Posted: Sun Apr 03, 2011 2:08 pm 
Getting Side Ways
Offline

Age: 36

Posts: 546

Joined: 5th Jun 2010

Ride: BA XT, NCII V8

Location: Adelaide
SA, Australia

its 1 thing i dont understand about fords all the commies have heat shielding on the leads but the falcon has it on the manifold but when you put extractors on or you have a 5ltr there is no protection for the leads,

Can you get leads that suit EF/EL that have heat shielding?
Top
 Profile  
 
 
 Post subject: Re: NL V8 missing/running rough at idle & under load
Posted: Sun Apr 03, 2011 2:16 pm 
Parts Gopher
Offline
User avatar

Age: 41

Posts: 81

Joined: 7th Jun 2010

Gallery: 3 images

Ride: NL Fairlane V8

Location: Sydney
NSW, Australia

{USERNAME} wrote:
its 1 thing i dont understand about fords all the commies have heat shielding on the leads but the falcon has it on the manifold but when you put extractors on or you have a 5ltr there is no protection for the leads,

Can you get leads that suit EF/EL that have heat shielding?


I hear ya... And thought of that this morning... Had a look around the usual places like eBay etc.. and nothing!

Lets see who else respond's :)

 

_________________

'98 NL Fairlane Ghia 5.0l

Top
 Profile  
 
 
 Post subject: Re: NL V8 missing/running rough at idle & under load
Posted: Mon Apr 04, 2011 7:31 pm 
Parts Gopher
Offline
User avatar

Age: 41

Posts: 81

Joined: 7th Jun 2010

Gallery: 3 images

Ride: NL Fairlane V8

Location: Sydney
NSW, Australia

{USERNAME} wrote:
Eagle leads are good, otherwise get ICE ones if you want to spend a bit more. Bosch should be good, Champion is now called Fuel Miser and should be good too. I'd get the thicker (10mm?) Eagle ones, well priced and should last ages.

Top Gun is overpriced s**t. Absolutely terrible, I had a new one fall apart in my hand when I pulled it off a plug. Not cheap either. Stay well away!


Looking at Eagle from www.netspares.com.au. Ignition leads E9838 for $68 plus 13.90 postage. Thoughts?

 

_________________

'98 NL Fairlane Ghia 5.0l

Top
 Profile  
 
 
 Post subject: Re: NL V8 missing/running rough at idle & under load
Posted: Mon Apr 04, 2011 8:21 pm 
Getting Side Ways
Offline

Posts: 2059

Joined: 3rd Apr 2008

Ride: EF Fairmont, XG Ute

Sounds good if thats the thicker ones. I think they do three thicknesses, standard, street/strip, motorsport. I got the middle ones (10m/11mm) for around $60 I think at mates rates. They were blue, grey boots on the ends IIRC. Nice quality.

Put some heat socks around the ends of the leads if you are worried about the heat. Wouldn't hurt. They look sick too :P
Top
 Profile  
 
 
 Post subject: Re: NL V8 missing/running rough at idle & under load
Posted: Mon Apr 04, 2011 8:23 pm 
Getting Side Ways
Offline

Posts: 2059

Joined: 3rd Apr 2008

Ride: EF Fairmont, XG Ute

Nice car BTW, I looked at the pics in your gallery. :D
Top
 Profile  
 
 
 Post subject: Re: NL V8 missing/running rough at idle & under load
Posted: Mon Apr 04, 2011 10:30 pm 
Parts Gopher
Offline
User avatar

Age: 41

Posts: 81

Joined: 7th Jun 2010

Gallery: 3 images

Ride: NL Fairlane V8

Location: Sydney
NSW, Australia

{USERNAME} wrote:
Nice car BTW, I looked at the pics in your gallery. :D


Thanks man. The Lane is pretty stock though. Don't mind it this way.
Those heat socket/shields things.. Yeah I am worried it'll happen again... Where would I get a set from? I've looked everywhere :!:

Actually found a set of Eagle leads at www.performancecarpartsonline.com.au for $58 plus postage. These are 9mm and the High Performance ones apparently...

 

_________________

'98 NL Fairlane Ghia 5.0l

Top
 Profile  
 
 
 Post subject: Re: NL V8 missing/running rough at idle & under load
Posted: Thu Apr 07, 2011 9:00 pm 
Getting Side Ways
Offline

Age: 73

Posts: 2542

Joined: 18th Mar 2006

Ride: EF-XR8chaser

Location: wollongong
NSW, Australia

summit racing---FMS-M-12259-M301-9mm leads-us$ 43,arriving in a few days with other goodies.takes a week to the door.while your at it-MSD-8227-buy 2 as they break down,a few members can reply to that one.i just had a 6 month old stock one dreak down on idle,with all kinds of misses,but ok over 1200rpm.replaced it with the msd unit-purrrrfect.chased leads for a week--coil,sucks.MSD-8227---us$47 i paid 80 bucks for the stock one.keep a spare in the boot.

 

_________________

R.I.P HANS HARTMAN

Top
 Profile  
 
Display posts from previous:
Sort by  
 Page 1 of 1  [ 12 posts ] 

Who is online

Users browsing this forum: No registered users and 21 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

 

 

It is currently Wed Dec 25, 2024 12:26 am All times are UTC + 11 hours

 

 

(c)2014 Total Web Solutions Australia - Australian Web Hosting and Domain Names