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Author Topic: lpg first start up  (Read 2259 times)

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Lazydocker

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Re: lpg first start up
« Reply #15 on: 13 May 2009, 09:07:55 »

Have you got the mapping done... Ideally you want bother the petrol (blue) and LPG (green) lines to be as close to each other as possible.
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Kevin Wood

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Re: lpg first start up
« Reply #16 on: 13 May 2009, 10:50:48 »

Excellent news. :y

As said, about 1.25 to 1.3 bar and 3mm nozzles seems about right for a 3.2.

I would avoid giving it serious beans on LPG until you've manually checked the mapping. They need a bit of tweaking after the auto calibration IME. Make sure that the lambda sensor outputs both go high and stay solidly high over the whole rev range on a wide open throttle. That way you know it's not going lean.

If you really want to perfect the map, connect a code reader to the OBDII port, reset the block learning and tune the LPG system until the fuel trims stay close to zero over the whole range of speed and load.

Kevin
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feeutfo

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Re: lpg first start up
« Reply #17 on: 13 May 2009, 11:01:39 »

Quote
Excellent news. :y

As said, about 1.25 to 1.3 bar and 3mm nozzles seems about right for a 3.2.

I would avoid giving it serious beans on LPG until you've manually checked the mapping. They need a bit of tweaking after the auto calibration IME. Make sure that the lambda sensor outputs both go high and stay solidly high over the whole rev range on a wide open throttle. That way you know it's not going lean.

If you really want to perfect the map, connect a code reader to the OBDII port reset the block learning and tune the LPG system until the fuel trims stay close to zero over the whole range of speed and load.

Kevin
er, you busy?  ;)
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Kevin Wood

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Re: lpg first start up
« Reply #18 on: 13 May 2009, 11:09:40 »

Nope. Not busy at all. I am in Waterford, Southern Ireland, though. :-/

 ;)

Kevin
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feeutfo

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Re: lpg first start up
« Reply #19 on: 13 May 2009, 11:12:08 »

Quote
Nope. Not busy at all. I am in Waterford, Southern Ireland, though. :-/

 ;)

Kevin
;D hope your having fun...what the roads like?   ;)
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Kevin Wood

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Re: lpg first start up
« Reply #20 on: 13 May 2009, 11:18:09 »

Quote
Quote
Nope. Not busy at all. I am in Waterford, Southern Ireland, though. :-/

 ;)

Kevin
;D hope your having fun...what the roads like?   ;)

Bumpy as break in a Westfield, but deserted compared to our area. Am surprised nothing's fallen off the car yet.

I'm back next week so if you want to borrow a passenger-seat-mounted electro-biological LPG mapping device we can sort something out then.

Kevin
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feeutfo

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Re: lpg first start up
« Reply #21 on: 13 May 2009, 11:25:54 »

Quote
Quote
Quote
Nope. Not busy at all. I am in Waterford, Southern Ireland, though. :-/

 ;)

Kevin
;D hope your having fun...what the roads like?   ;)

Bumpy as break in a Westfield, but deserted compared to our area. Am surprised nothing's fallen off the car yet.

I'm back next week so if you want to borrow a passenger-seat-mounted electro-biological LPG mapping device we can sort something out then.

Kevin
 
Good stuff, see you then. Will lay off the loud pedal til then. :)
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arlee219

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Re: lpg first start up
« Reply #22 on: 21 May 2009, 21:22:50 »

Hi Chris
just read bout lpg install
I'm driving 2.2CD Auto X reg with Leonardo LPG sys.
Any chance you'd let me know how much have you pid for your sys and what's the make? Mine'spretty old and thinking of getting the new one :)
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Martin_1962

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Re: lpg first start up
« Reply #23 on: 21 May 2009, 21:37:29 »

I had to lean mine off to prevent dropping to petrol at WOT.

That is what AGWW told me to do
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Lazydocker

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Re: lpg first start up
« Reply #24 on: 21 May 2009, 22:00:14 »

Quote
I had to lean mine off to prevent dropping to petrol at WOT.

That is what AGWW told me to do

Surely they didn't advise that! Leaning is the last thing you want... It's better to richen it if anything! If it leans out at WOT you run the risk of serious damage as the combustion is too hot :o :o :o
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Martin_1962

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Re: lpg first start up
« Reply #25 on: 21 May 2009, 22:03:18 »

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Quote
I had to lean mine off to prevent dropping to petrol at WOT.

That is what AGWW told me to do

Surely they didn't advise that! Leaning is the last thing you want... It's better to richen it if anything! If it leans out at WOT you run the risk of serious damage as the combustion is too hot :o :o :o

They said it would be fine ::)

That said still runs fine but we will see on Saturday when I remove a head
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Lazydocker

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Re: lpg first start up
« Reply #26 on: 21 May 2009, 22:04:42 »

Quote
Hi Chris
just read bout lpg install
I'm driving 2.2CD Auto X reg with Leonardo LPG sys.
Any chance you'd let me know how much have you pid for your sys and what's the make? Mine'spretty old and thinking of getting the new one :)

Can't remember what he charges for a 4 pot system but to give you an idea... I paid £650ish for my full kit, including tank, for a 6 pot. Take off at least £200 for the tank and it's £450ish for the front end kit (plus a few extras) so I would think a 4 pot kit could come in under £400 all in, especially if you spoke to Teilo and explained that it's an upgrade from a Leonardo controlled single point so you wouldn't need all of the extra's he throws in! :y :y :y
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Kevin Wood

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Re: lpg first start up
« Reply #27 on: 21 May 2009, 22:04:57 »

Quote
Quote
I had to lean mine off to prevent dropping to petrol at WOT.

That is what AGWW told me to do

Surely they didn't advise that! Leaning is the last thing you want... It's better to richen it if anything! If it leans out at WOT you run the risk of serious damage as the combustion is too hot :o :o :o

Agreed. A lean mixture is very bad news. If it can't keep up with demand, best to let it switch over the petrol rather than burn a valve or melt a piston.

Check that both Lambda sensors read a solid rich when "on it" otherwise you are on dodgy ground, especially if towing, as the engine will get WOT for longer periods.

Kevin
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Lazydocker

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Re: lpg first start up
« Reply #28 on: 21 May 2009, 22:07:08 »

Quote
Quote
Quote
I had to lean mine off to prevent dropping to petrol at WOT.

That is what AGWW told me to do

Surely they didn't advise that! Leaning is the last thing you want... It's better to richen it if anything! If it leans out at WOT you run the risk of serious damage as the combustion is too hot :o :o :o

Agreed. A lean mixture is very bad news. If it can't keep up with demand, best to let it switch over the petrol rather than burn a valve or melt a piston.

Check that both Lambda sensors read a solid rich when "on it" otherwise you are on dodgy ground, especially if towing, as the engine will get WOT for longer periods.

Kevin

Which is why, even though mine seems to stay rich at WOT, I have opted to drop onto petrol over 5200RPM just in case :y :y :y

And to avoid the annoying drop off I seem to get :-/ :-/ :-/
« Last Edit: 21 May 2009, 22:15:25 by Lazydocker »
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arlee219

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Re: lpg first start up
« Reply #29 on: 21 May 2009, 22:48:17 »

Quote
Quote
Hi Chris
just read bout lpg install
I'm driving 2.2CD Auto X reg with Leonardo LPG sys.
Any chance you'd let me know how much have you pid for your sys and what's the make? Mine'spretty old and thinking of getting the new one :)

Can't remember what he charges for a 4 pot system but to give you an idea... I paid £650ish for my full kit, including tank, for a 6 pot. Take off at least £200 for the tank and it's £450ish for the front end kit (plus a few extras) so I would think a 4 pot kit could come in under £400 all in, especially if you spoke to Teilo and explained that it's an upgrade from a Leonardo controlled single point so you wouldn't need all of the extra's he throws in! :y :y :y

And how could I actually contact him? I've looked via OOF members nicknames, and couldn't find him. Please help :)
« Last Edit: 21 May 2009, 22:48:58 by arlee219 »
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