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GU 4.8 gas enquiry

Tech Talk for Nissan owners.

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Posts: 232
Joined: Sat Dec 05, 2009 6:33 am
Location: BUNDY

GU 4.8 gas enquiry

Post by RIZZO »

Hi guys, thinking about putting my 4.8 Gu on gas, whats the better sorta systems to go, have heard different stories from everyone i ask, thought id try, I dont want to be doin valves every 20000kms and dont want to lose power, is there any system out there that can be suitable, thanks,
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Location: Sydney

Re: GU 4.8 gas enquiry

Post by jessie928 »

You need to get gas injection fitted. Any reputable kit from Australia is fine

Cheers
Jes
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Posts: 161
Joined: Mon Jan 10, 2005 9:34 pm
Location: Brisbane

Re: GU 4.8 gas enquiry

Post by A.R.T Racing »

I wanted impco, they fitted sprintgas...

Seems to work ok but does have issues after they service it, changes to gas too quick on start up and then nearly stalls car.
GQ Ute V8, EFS lift, Silverstones.
Posts: 1960
Joined: Mon Apr 18, 2005 9:17 pm
Location: Newcastle

Re: GU 4.8 gas enquiry

Post by MjWatt »

I got a 4.8 on injected sprint gas. Only had one issue since I had it and it fixed itself. Also upgraded the valve on the mixer thing and replaced the soliniod with an upgraded one as recommended by my local dealer. Runs like a charm
DIRTY ROCK STAR wrote: get an alarm and a case for yoru neighbour.
oh and a spellcheck for you.
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Re: GU 4.8 gas enquiry

Post by howsie »

A.R.T Racing wrote:I wanted impco, they fitted sprintgas...

Seems to work ok but does have issues after they service it, changes to gas too quick on start up and then nearly stalls car.
FYI this is not a changing to gas problem its a problem with the gas mix. Mine changes immediatly and never tries to stall. Yet my brothers gq changes after 20 seconds on.petrol and tries to stall all the time.
93 RV, 5 in tough dog lift, dobinsons shocks and coils, PA, dual fuel, many many oil leaks and a ton of character.
Posts: 1960
Joined: Mon Apr 18, 2005 9:17 pm
Location: Newcastle

Re: GU 4.8 gas enquiry

Post by MjWatt »

howsie wrote:
A.R.T Racing wrote:I wanted impco, they fitted sprintgas...

Seems to work ok but does have issues after they service it, changes to gas too quick on start up and then nearly stalls car.
FYI this is not a changing to gas problem its a problem with the gas mix. Mine changes immediatly and never tries to stall. Yet my brothers gq changes after 20 seconds on.petrol and tries to stall all the time.
Apparently the sprint gas systems (well mine apparently), are set to switch over when the engine hits a certian temp too. might want to get ur sesor looked at?
DIRTY ROCK STAR wrote: get an alarm and a case for yoru neighbour.
oh and a spellcheck for you.
Posts: 161
Joined: Mon Jan 10, 2005 9:34 pm
Location: Brisbane

Re: GU 4.8 gas enquiry

Post by A.R.T Racing »

MjWatt wrote:
howsie wrote:
A.R.T Racing wrote:I wanted impco, they fitted sprintgas...

Seems to work ok but does have issues after they service it, changes to gas too quick on start up and then nearly stalls car.
FYI this is not a changing to gas problem its a problem with the gas mix. Mine changes immediatly and never tries to stall. Yet my brothers gq changes after 20 seconds on.petrol and tries to stall all the time.
Apparently the sprint gas systems (well mine apparently), are set to switch over when the engine hits a certian temp too. might want to get ur sesor looked at?
It only does it after they service it. Then we take it back and they fix it. 10,000 latter back for a service and it does it again... Now we still have to take it back again. I just wish they could do it right the first time, so much trouble dropping cars off to get picked up and collect it again.
GQ Ute V8, EFS lift, Silverstones.
Posts: 367
Joined: Sun Oct 04, 2009 5:50 pm
Location: Penrith, Sydney

Re: GU 4.8 gas enquiry

Post by howsie »

A.R.T Racing wrote:
MjWatt wrote:
howsie wrote:
A.R.T Racing wrote:I wanted impco, they fitted sprintgas...

Seems to work ok but does have issues after they service it, changes to gas too quick on start up and then nearly stalls car.
FYI this is not a changing to gas problem its a problem with the gas mix. Mine changes immediatly and never tries to stall. Yet my brothers gq changes after 20 seconds on.petrol and tries to stall all the time.
Apparently the sprint gas systems (well mine apparently), are set to switch over when the engine hits a certian temp too. might want to get ur sesor looked at?
It only does it after they service it. Then we take it back and they fix it. 10,000 latter back for a service and it does it again... Now we still have to take it back again. I just wish they could do it right the first time, so much trouble dropping cars off to get picked up and collect it again.
Seems to me that the way they are servicing it (retuning) is wrong and when you take it back they are readjusting the mix try adjusting the mix yourself by turning the mixer dial about 1mm at a time and never more than a quarter turn in either direction till its better. As a basic tuning rule from fully closed 2 full turns should be close.
93 RV, 5 in tough dog lift, dobinsons shocks and coils, PA, dual fuel, many many oil leaks and a ton of character.
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