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ba lpg sedan 

 

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 Post subject: ba lpg sedan
Posted: Mon Jan 10, 2011 11:42 pm 
Oompa Loompa
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Age: 41

Posts: 34

Joined: 10th Jan 2011

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Ride: Ba xt,Xe 351,Fg mk2 xr6

Location: Doreen
VIC, Australia

My car is has started to have a weird problem.
Every now and then it makes a huge bang noise(like a tyre exploding)under the bonnet
then runs rough for about ten mins then its fine.'
Any ideas anyone because i need help.
thankyou
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 Post subject: Re: ba lpg sedan
Posted: Mon Jan 10, 2011 11:47 pm 
Getting Side Ways
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Age: 30

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Joined: 14th Aug 2009

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Ride: BA XT V8

Location: Gosnells, Perth
WA, Australia

back fireing thru ther airbox. unsure wat cause is, maybe timing or similar.
ur right around the corner from me so ill keep an ear out. lol

 

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 Post subject: Re: ba lpg sedan
Posted: Tue Jan 11, 2011 12:01 pm 
Smokin em up
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Joined: 18th Sep 2007

Location: Perth
WA, Australia

Change plugs. Make sure you use Bosch double platinums and make sure they're gapped to 1.1mm or less and use dielectric grease generously in and around the rubber boots on each coil. Backfiring is almost always caused by a weak ignition system.

 

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2005 VZ Commodore SV6 with OMVL Dream XXI SVI LPG
2004 BA Falcon XT with Orbital Liquid LPG Injection
2004 BA Falcon XR6 with icom JTG Liquid LPG Injection

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 Post subject: Re: ba lpg sedan
Posted: Tue Jan 11, 2011 12:09 pm 
Getting Side Ways
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Location: Brisbane
QLD, Australia

Yep plugs. Almost every time.
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 Post subject: Re: ba lpg sedan
Posted: Tue Jan 11, 2011 8:16 pm 
Oompa Loompa
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Age: 41

Posts: 34

Joined: 10th Jan 2011

Gallery: 8 images

Ride: Ba xt,Xe 351,Fg mk2 xr6

Location: Doreen
VIC, Australia

Thanks mate,but i always use ngk platinum tip plugs.They are about 25000 ks old but shouldnt
they be good for about 100 000 ks?
Maybe my mechanis didnt gap them when he put them in :evil:
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 Post subject: Re: ba lpg sedan
Posted: Tue Jan 11, 2011 11:28 pm 
Getting Side Ways
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falcon3518 wrote:
Thanks mate,but i always use ngk platinum tip plugs.They are about 25000 ks old but shouldnt
they be good for about 100 000 ks?
Maybe my mechanis didnt gap them when he put them in :evil:



You don't regap platinum or iridium plugs, you buy the plug with the right gap and install them untouched.

 

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 Post subject: Re: ba lpg sedan
Posted: Fri Jan 14, 2011 2:37 am 
Smokin em up
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Joined: 18th Sep 2007

Location: Perth
WA, Australia

falcon3518 wrote:
Thanks mate,but i always use ngk platinum tip plugs.They are about 25000 ks old but shouldnt
they be good for about 100 000 ks?
Maybe my mechanis didnt gap them when he put them in :evil:


For petrol-only engines, those plugs should last around 100,000km but for gas engines, expect the life to be shortened by 30%-50%. Gas is much harder on the ignition system. Electrode gap is very important, as is a seal free from spark leak between each coil and plug.

 

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2005 VZ Commodore SV6 with OMVL Dream XXI SVI LPG
2004 BA Falcon XT with Orbital Liquid LPG Injection
2004 BA Falcon XR6 with icom JTG Liquid LPG Injection

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 Post subject: Re: ba lpg sedan
Posted: Fri Jan 14, 2011 9:37 am 
Getting Side Ways
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Location: Brisbane
QLD, Australia

Many LPG Fitters actually prefer not to use platinum/iridium plugs, and will switch back to normal plugs for LPG.

Nigel
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 Post subject: Re: ba lpg sedan
Posted: Sun Jan 16, 2011 11:51 pm 
Smokin em up
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Joined: 18th Sep 2007

Location: Perth
WA, Australia

Bosch double-platinums have been proven to work well on B-series gas engines. Just make sure that your coil boots have had plenty of grease applied to them to prevent spark leak and the plugs will last 80,000km.

 

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2005 VZ Commodore SV6 with OMVL Dream XXI SVI LPG
2004 BA Falcon XT with Orbital Liquid LPG Injection
2004 BA Falcon XR6 with icom JTG Liquid LPG Injection

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