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27-11-2011, 01:34 PM
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FF.Com.Au Hardcore
Join Date: Aug 2010
Location: NSW
Posts: 680
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A mate's AU2 4.0 litre falcon had a backfire on LPG yesterday. It seems to be now running an about three cylinders even on petrol. Any ideas on what might be the problem, maybe the coil pack? and any ideas on what may have caused the backfire. It happened when accelerating from a standing start.
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27-11-2011, 02:10 PM
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Next upgraded Mk1 Leopard
 
Join Date: Jan 2005
Location: Sydney, in the burbs
Posts: 4,913
 
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Quote:
Uk
__________________
Plastic Surgery 1 AUII Monsoon Blue How 2's: Change rear view mirror, Install backfire valve, Change foam front seats, Install auto transmission cooler, Replace Trans Shift Globe, Remove front door Trim, Paint AU headlights, install door spears, Premium Rear Parcel Shelf, go here...
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27-11-2011, 07:19 PM
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Bugger!
Join Date: Jul 2011
Location: Albany, WA
Posts: 3,307
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Suggest MAP sensor may have been damaged; it's in the manifold just under the throttle body on those so a real pita :(
Also check manifold gasket and all vacuum hoses very carfully - spray degreaser around while it's running.
__________________
Whoops, there goes another factory setup! Chop and change - butchering cars since 1990 
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27-11-2011, 08:31 PM
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#4 | |||
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Next upgraded Mk1 Leopard
Join Date: Jan 2005
Location: Sydney, in the burbs
Posts: 4,913
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Quote:
Uk
__________________
Plastic Surgery 1 AUII Monsoon Blue How 2's: Change rear view mirror, Install backfire valve, Change foam front seats, Install auto transmission cooler, Replace Trans Shift Globe, Remove front door Trim, Paint AU headlights, install door spears, Premium Rear Parcel Shelf, go here...
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27-11-2011, 08:42 PM
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#5 | |||
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FF.Com.Au Hardcore
Join Date: Aug 2006
Location: Salamander Bay
Posts: 5,427
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Quote:
__________________
[SIGPIC][/SIGPIC]
Everyone starts off with a bag full of luck and an empty bag of experience. The trick is to fill the experience bag before the luck bag is empty. "It is better to remain silent and be thought a fool than to speak out and remove all doubt." Start a new career as a bus driver Rides: FG2 XR6 stock at this stage but a very nice ride xc 4 DOOR X CHASER 5.8 UNDER RESTO |
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20-02-2014, 03:06 PM
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#6 | ||
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Starter Motor
Join Date: Sep 2013
Posts: 2
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A duel fuel factory fitted LPG falcon au2. Started bak fire recently, changed spark plugs, running ok then back fired, changed leads, running ok but two weeks later back fired again every now and then when engine is cold. Running ok when engine is hot or on petrol. Is it the mixture or coil pack? Any advice?
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20-02-2014, 06:09 PM
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#7 | |||
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Walking with God
Join Date: Mar 2005
Location: Melbourne
Posts: 7,321
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Quote:
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 |
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21-02-2014, 09:54 AM
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#8 | |||
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Starter Motor
Join Date: Sep 2013
Posts: 2
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Quote:
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22-02-2014, 07:29 AM
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#9 | |||
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Walking with God
Join Date: Mar 2005
Location: Melbourne
Posts: 7,321
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Quote:
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 |
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22-01-2019, 08:48 PM
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#10 | |||
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Starter Motor
Join Date: Mar 2018
Posts: 1
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Quote:
Went to Jollys, got another mixer, easy fix. You can check by unplugging the little air hose going to the mixer, if nothing changes that means diaphragm blown. Cheers |
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23-01-2019, 07:14 PM
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#11 | ||
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Next upgraded Mk1 Leopard
Join Date: Jan 2005
Location: Sydney, in the burbs
Posts: 4,913
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Alexs the original post was in 2011. Good update idea.
UK
__________________
Plastic Surgery 1 AUII Monsoon Blue How 2's: Change rear view mirror, Install backfire valve, Change foam front seats, Install auto transmission cooler, Replace Trans Shift Globe, Remove front door Trim, Paint AU headlights, install door spears, Premium Rear Parcel Shelf, go here...
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11-02-2019, 05:01 PM
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#12 | ||
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Starter Motor
Join Date: Jun 2017
Posts: 11
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Backfire on LPG?
My AU ute runs on LPG, and when it backfires, I always check the plug gap. No more than .8mm, and all will be OK. Sometimes too many backfires will also damage the plug leads. Ray 2002 AU-111 at 350k |
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Au II falcon LPG backfire
Linear Mode
