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25-06-2006, 02:48 PM
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#1 | ||
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I hate Holdens
Join Date: Apr 2005
Location: Adelaide
Posts: 182
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hey guys,
started my car yesterday morning, running on empty (gas), slowly got to servo, filled the gas tank up, went to leave the servo, as i accelerated car started to backfire sounded like through the intake air box, now the car hardly idles on gas and soon as u put your foot down backfires through air box, switched it over to petrol idles 90 percent alright, but sort of stumbles under hardish acceleration,and idles high on petrol, the gas sytem brand is impco, i turned up the idle on the gas system little screw thing on the left hand side,just wondering if anyone may know or had this problem before. thanks. Dan |
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25-06-2006, 07:51 PM
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Turbo Falcon Fiend
Join Date: May 2005
Location: Far West NSW
Posts: 3,205
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At a guess your first backfire has created an air leak that is resulting in lean mixyures and backfires.
__________________
Too many turbo toys...... 2009 FG F6 Nitro LPI LPG 290rwkw on LPG. 2005 BAMKII XR6 Turbo with LPG (ex HWP 255,000k's and counting) Honda 2001 CR500E Road registered CR500 Honda 1985 CR500 (the one with the arm ripping power) DT200r regoed Hack Yamaha IT/YZ 465 Vinduro rocket Imported IT465 and 490 back up bikes VF1000R mid 80's racer built by HMR Honda CR480 Air cooled project road cafe racer. T88 Turbo XT Falcon project with 351 Cleveland (mothballed) Plus the rest. . |
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26-06-2006, 08:25 AM
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Fantastic Plastic
Join Date: Jan 2006
Location: Mars most of the time
Posts: 2,019
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As Turbotaxi said .. Being a gas/fuel system though , really it should have the spring type clips holding the airbox lid on, so in cases of hi-pressesure/backfires it can spit the lid up on the airbox to quickly release the backfire / instead of keeping the pressue within the system . Has your airbox got the spring type clips ?
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26-06-2006, 08:36 AM
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Adapt or perish...
Join Date: Jan 2005
Location: Dip!@#$
Posts: 7,954
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I'd also recommend you never let the gas tank run empty.
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Carless
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26-06-2006, 05:07 PM
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#5 | |||
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Melbourne Lad
Join Date: May 2006
Posts: 80
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Quote:
A low/empty tank means a lean mixture. Running lean have can have dire consequences on your motor. |
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26-06-2006, 05:18 PM
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#6 | |||
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Moderator
  
Join Date: Feb 2005
Location: Kenthurst
Posts: 40,394
 
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Quote:
Have done it by accident ... it's not fun *mumbles* bloody fuel gauge *mumbles*
__________________
The Current Stable 2016 SZII TS Territory RWD Petrol The Evolution of the EGA54D utes AU Workshop Build thread of EGA54D B-Series Workshop Build thread of EGA54D 2004 SX TX Territory AWD - Gone but not forgotten 2010 FG XT "The ex-rental" - Moved onto a new home Mechan1k's Flickr Page |
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26-06-2006, 06:29 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:
Also, what effects, backfiring, worn head etc, etc? 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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26-06-2006, 07:37 PM
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#8 | ||
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Turning towards the dark
Join Date: Sep 2005
Location: Mudgee
Posts: 126
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mixture runs lean because an lpg system doesnt have a "fuel pump" so to speak, and relies on the liquid pressure from the tank.. and the tank empties, pressure begins to equalise and hence, less liquid flow to the converter and eventually (very near empty) a lean condition..
backfires? vacuum leaks, lean condition and ign. problems |
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26-06-2006, 09:56 PM
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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:
Mental note, refill gas tank before reaching quarter capacity! 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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29-06-2006, 08:57 PM
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#10 | ||
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I hate Holdens
Join Date: Apr 2005
Location: Adelaide
Posts: 182
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thanks guys for the info,finally took the car to a gas place and they said wasrunning lean,just happens some times over a period of time and the guy just "scraped the mixer" and it all is good took awhile for the cars computer to work out the mixtures but after 5-10 km's it runs fine
 only cost me $40 phew!
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29-06-2006, 11:03 PM
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#11 | ||
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Kick out tha Jams
Join Date: Mar 2006
Location: SA
Posts: 443
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hmmmmm, never heard that before, I always run the tank to empty, without fail. never had any problems along those lines either (well none that werent caused by something else anyway)
__________________
$416.80.......All that cash came from a new (used) car. Check your back seats! |
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30-06-2006, 04:16 PM
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#12 | |||
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Walking with God
Join Date: Mar 2005
Location: Melbourne
Posts: 7,321
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Quote:
Glad it's sorted! 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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30-06-2006, 04:52 PM
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#13 | ||
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growing up is optional
Join Date: Feb 2006
Location: Gawler area SA
Posts: 3,303
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You have probably blown the vacuum port bung out of the manifold, where the PCV hose usually is. When LPG is fitted the PCV hose is usually re-routed to under the ISC and a bung is fitted over the original port. Have a look under the throttle body, between it and the rocker cover. If its idling high on petrol after a backfire, this is normally what has happened.
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30-06-2006, 05:45 PM
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#14 | |||
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Miami Pilot
 
Join Date: Jan 2005
Location: ACT
Posts: 21,703
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Quote:
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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 |
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30-06-2006, 10:58 PM
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#15 | |||
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Kick out tha Jams
Join Date: Mar 2006
Location: SA
Posts: 443
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Quote:
__________________
$416.80.......All that cash came from a new (used) car. Check your back seats! |
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01-07-2006, 07:12 AM
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#16 | |||
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Flat floor shifter
Join Date: Jan 2005
Location: swappers xing
Posts: 504
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Quote:
I run mine dry cause i'm a tight *** and have no drama's just hit petrol and head for the servo. |
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AU I Xr6 LPG problem
Linear Mode
