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 12-06-2011, 11:56 AM   #1
david lee
FF.Com.Au Hardcore
 
Join Date: Jul 2010
Posts: 858
Default misfire

when i start my xr6 on cold it has a slight miss untill it warms up. my mechanic told me the computer needed resetting which he did but did not fix the problem.its going back to him.has anyone had this problem. thanks.

david lee is offline   Reply With Quote Multi-Quote with this Post
Old 12-06-2011, 12:09 PM   #2
Zero_PSI
Banned
 
Zero_PSI's Avatar
 
Join Date: Oct 2009
Location: Ghetto, SA
Posts: 874
Default Re: misfire

My coil-packs are down the crapper at the moment. Mine misses under load though. I have more on order so I'm just waiting.

Coil-packs are a common problem in B-series but I haven't heard anything about AU's. Maybe just have a look for cracking or scaring on the coil.
Zero_PSI is offline   Reply With Quote Multi-Quote with this Post
Old 12-06-2011, 12:14 PM   #3
fasty73
FF.Com.Au Hardcore
 
fasty73's Avatar
 
Join Date: Apr 2011
Posts: 521
Default Re: misfire

Could be leaking injectors, they leak fuel into the cylinder while the car is turned off, then causing a missfire until it cleans the excess fuel out.
fasty73 is offline   Reply With Quote Multi-Quote with this Post
Old 12-06-2011, 02:38 PM   #4
Mr Hardware
Flairs - Truckers Delight
 
Mr Hardware's Avatar
 
Join Date: Aug 2006
Location: Brisbane Northside Likes: Opposite Lock
Posts: 5,731
Tech Writer: Recognition for the technical writers of AFF - Issue reason: The excellent how to on LPG jet cleaning. 
Default Re: misfire

oh look its david lee, the guy who asks questions but never returns to shed light on what actually fixed his problem

this is a community not the racv mate

but to answer your question, it will likely be fuel or spark related
how many kays since your last plug/lead/coilpak/fuel filter change?
pcv valve rattle ok?
all vacuum lines seem to be connected?
how many kays on your xr6?
__________________
Current: Silhouette Black 2007 SY Ford Territory TX RWD 7-seater "Black Banger"
2006-2016: Regency Red 2000 AUII Ford Falcon Forte Automatic Sedan Tickford LPG "Millennium Falcon"
Mr Hardware is offline   Reply With Quote Multi-Quote with this Post
Old 12-06-2011, 04:28 PM   #5
david lee
FF.Com.Au Hardcore
 
Join Date: Jul 2010
Posts: 858
Default Re: misfire

Quote:
Originally Posted by Mr Hardware
oh look its david lee, the guy who asks questions but never returns to shed light on what actually fixed his problem

this is a community not the racv mate

but to answer your question, it will likely be fuel or spark related
how many kays since your last plug/lead/coilpak/fuel filter change?
pcv valve rattle ok?
all vacuum lines seem to be connected?
how many kays on your xr6?
sorry mate i will fill u in when the problems fixed. it has 150000 ks everything was changed at 120000ks thanks
david lee is offline   Reply With Quote Multi-Quote with this Post
Old 12-06-2011, 08:40 PM   #6
david lee
FF.Com.Au Hardcore
 
Join Date: Jul 2010
Posts: 858
Default Re: misfire

Quote:
Originally Posted by Zero_PSI
My coil-packs are down the crapper at the moment. Mine misses under load though. I have more on order so I'm just waiting.

Coil-packs are a common problem in B-series but I haven't heard anything about AU's. Maybe just have a look for cracking or scaring on the coil.
thanks mate i will reply when fixed with solution
david lee is offline   Reply With Quote Multi-Quote with this Post
Old 12-06-2011, 08:46 PM   #7
david lee
FF.Com.Au Hardcore
 
Join Date: Jul 2010
Posts: 858
Default Re: misfire

Quote:
Originally Posted by fasty73
Could be leaking injectors, they leak fuel into the cylinder while the car is turned off, then causing a missfire until it cleans the excess fuel out.
thanks i will reply when fixed this week
david lee is offline   Reply With Quote Multi-Quote with this Post
Old 13-06-2011, 05:55 PM   #8
JC
Miami Pilot
Donating Member2
 
JC's Avatar
 
Join Date: Jan 2005
Location: ACT
Posts: 21,703
Tech Writer: Recognition for the technical writers of AFF - Issue reason: Writing tech articles 
Default Re: misfire

Could be TMap sensor in the manifold sort of under the TB. But doubtful - a miss is usually spark or fuel related. Annoying when the problem is so obvious but the solution can be one of several things.

An easy thing to check is the bolts on the inlet manifold - they tend to come loose, and let random air in causing a misfire type condition.
__________________
-----------------------------------------------------------------
The Hammer: FG GTE | 376rwkw | 1/4 mile 11.793 @ 119.75mph 1.733 60' (4408lb)
1 of 60 FG MK1 335 GTEs (1 of 118 FG Mk 1 & 2 335 GTEs).
Mods: Tune, HSD/ShockWorks, black GT335 19” staggered replicas with 245 & 275/35/19 Michelin Pilot sport 5s

Daily: BF2 Fairmont Ghia I6 ZF, machine face GT335 19” staggered Replicas with 245s and 275s, Bilsteins & Kings

FPV 335 build stats: <click here>

Ford Performance Club ACT
JC is offline   Reply With Quote Multi-Quote with this Post
Old 13-06-2011, 07:05 PM   #9
david lee
FF.Com.Au Hardcore
 
Join Date: Jul 2010
Posts: 858
Default Re: misfire

Quote:
Originally Posted by JC
Could be TMap sensor in the manifold sort of under the TB. But doubtful - a miss is usually spark or fuel related. Annoying when the problem is so obvious but the solution can be one of several things.

An easy thing to check is the bolts on the inlet manifold - they tend to come loose, and let random air in causing a misfire type condition.
thanks its going to the mechanic tomorrow i will let u know what it was.its probably something simple yet so annoying
david lee is offline   Reply With Quote Multi-Quote with this Post
Old 13-06-2011, 07:22 PM   #10
IGALOP
Starter Motor
 
IGALOP's Avatar
 
Join Date: Apr 2011
Location: Gippsland Vic.
Posts: 17
Default Re: misfire

Take it out in the dark leave it running and look under the bonnet for any arcing from the HT leads.
Had the same problem on my 67 Mustang, easy fix if that's what it is.
__________________
2000 AU Wagon/ 18 " XR8 Wheels, Duel fuel, White, Tinted windows, only 145000 k's.

2006 BF SR Falcon E-gas Pale Gold 17" Sports wheels, tinted windows, spoilers, etc etc, I40000 k's

1967 Mustang 289 Coupe, White 289 V8, auto, AM/FM/CD player, chromed style steel sports wheels, etc

2003 Hyundai Elantra Sport Hatchback Blue Twin cam 16V 2 litre efi
IGALOP is offline   Reply With Quote Multi-Quote with this Post
Old 13-06-2011, 08:37 PM   #11
GK
Walking with God
 
GK's Avatar
 
Join Date: Mar 2005
Location: Melbourne
Posts: 7,321
Tech Writer: Recognition for the technical writers of AFF - Issue reason: Writing tech articles 
Default Re: misfire

Good advice you've been given.

Is your car on LPG by any chance?

If yes, then I'd say that 75% of backfiring issues can be sorted by plugs, leads or coil pack. If not those items, then you may be running lean on the LPG. If on LPG, then I'd change plugs and get an LPG tune each year.

Hope you get it sorted soon.

GK
__________________
2009 Mondeo Zetec TDCi - Moondust Silver

2015 Kia Sorento Platinum - Snow White Pearl

2001 Ducati Monster 900Sie - Red

Now gone!
1999 AU1 Futura Wagon - Sparkling Burgundy
On LPG



Want a Full Life? John 10:10
GK is offline   Reply With Quote Multi-Quote with this Post
Old 14-06-2011, 06:51 PM   #12
david lee
FF.Com.Au Hardcore
 
Join Date: Jul 2010
Posts: 858
Default Re: misfire

Quote:
Originally Posted by GK
Good advice you've been given.

Is your car on LPG by any chance?

If yes, then I'd say that 75% of backfiring issues can be sorted by plugs, leads or coil pack. If not those items, then you may be running lean on the LPG. If on LPG, then I'd change plugs and get an LPG tune each year.

Hope you get it sorted soon.

GK
thanks mate its not on lpg.ive just picked it up from my mechanic who has said not to run it on standard unleaded but run it on premium which has higher octane
david lee is offline   Reply With Quote Multi-Quote with this Post
Old 14-06-2011, 07:03 PM   #13
david lee
FF.Com.Au Hardcore
 
Join Date: Jul 2010
Posts: 858
Default Re: misfire

Quote:
Originally Posted by IGALOP
Take it out in the dark leave it running and look under the bonnet for any arcing from the HT leads.
Had the same problem on my 67 Mustang, easy fix if that's what it is.
thanks mate i forgot about that trick
david lee is offline   Reply With Quote Multi-Quote with this Post
Reply


Forum Jump


All times are GMT +11. The time now is 12:52 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