Welcome to the Australian Ford Forums forum.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and inserts advertising. By joining our free community you will have access to post topics, communicate privately with other members, respond to polls, upload content and access many other special features without post based advertising banners. Registration is simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact us.

Please Note: All new registrations go through a manual approval queue to keep spammers out. This is checked twice each day so there will be a delay before your registration is activated.

Go Back   Australian Ford Forums > Club and Speciality Forums > Forum Community Car Clubs > AU Falcon.com.au

Reply
 
Thread Tools Display Modes
Old 02-08-2011, 05:54 PM   #1
midgetyone
Regular Member
 
Join Date: May 2011
Posts: 40
Default Spark miss with new ignition components

Hi,

My AUIII XR6 has been rough with a miss for a while. So I have replaced the plugs, leads and coil. Didn't change a thing, still rough, so I decided to get a non intrusive spark tester onto it while it was idling. Sure enough cylinders 3 & 4 are missing...... Well I'm a bit stumped. Good coil, good leads, good plugs. Just to humour the situation I thought I would swap the plugs around in case one had a cracked insulator but they were fine. So it was suggested that it could be the crank angle sensor. It's not a consistent miss but it's not far off. How likely is this? Any other ideas of what it might be?

All the injectors feel (by touch) like they are firing but I would not be able to pick up a quick miss.

Cheers

__________________
Chris
____________________
01 AU III XR6 Venom Red
Pacemaker 4499 with 200cpsi cat & 2 1/2' Sports exhaust
SS Induction Kit
midgetyone is offline   Reply With Quote Multi-Quote with this Post
Old 02-08-2011, 06:50 PM   #2
my67xr
FF.Com.Au Hardcore
 
my67xr's Avatar
 
Join Date: Aug 2007
Location: Brighton, Adelaide
Posts: 3,974
Technical Contributor: For members who share their technical expertise. - Issue reason: This contribution: 04 SX TX AWD, drama's replacing upper outer joints w/Nolathane replacements 
Default Re: Spark miss with new ignition components

im not sure if this will help you or not
but check the wiring plug which plugs into the coil pack
in the earlier ef 's and el's sometimes the metal pins ends up dislodging from inside the plastic plug and slipping out the back of the plug.
if they have you will see a little tab on them which holds them in, you can bend the tab out a bit then refit the pin into the plastic plug again.
it will click back in. then check they are all still tight in there.
they can play up going over bumps etc and it's a hard thing trace
sometimes they dont even make contact with the pins in the coil and wont fire the coil at all

i always use some dielectric grease on the pins in the plug too, just incase the coil gets wet
it looks after the connections, seals them from water, oil, dust etc,they wont corrode.
handy too if you ever steam clean / pressure wash your engine bay

the crank angle sensors dont like being dirty either, or the wheel on the back of the harmonic, i usually degrease and wash them off
__________________
Money Talks, but all i ever hear is it saying Goodbye!!

click below to view my build threads
67 XR Fairmont
04 SX TX Territory AWD

my67xr is offline   Reply With Quote Multi-Quote with this Post
Reply

Thread Tools
Display Modes

Forum Jump


All times are GMT +11. The time now is 12:24 PM.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Other than what is legally copyrighted by the respective owners, this site is copyright www.fordforums.com.au
Positive SSL