How to tune a Landi LPG setup?

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Originally Posted by 100I

It was fitted at the same place, as you know, did yours go back for Scot to retune it after a settle in period? The diaphrams kind of stretch a little and the tuning goes out, but once it's been retuned after the breakin period then they're usually right. All our forklifts have to be tickled at the 50hr service.

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It was a while ago but I think I did. Would have dropped it off before work as I was near there at the time. Not 100% though.

Either way it runs fine at the moment I'm more interested in just getting some knowledge for when I'm out somewhere and it stops being fine ;)

As you said though sometimes it smells like LPG when you park it but other times it doesn't. I suppose that is partly different LPG and partly different driving types (highway, towing, trip to the shops etc). Plus being open loop.

I think I have all the info I really need. I've seen the Jaycar kit with the red, yellow, green LEDs before. I might get one once I've sorted the 14CUX sensors out.

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I think I have all the info I really need. I've seen the Jaycar kit with the red, yellow, green LEDs before. I might get one once I've sorted the 14CUX sensors out.

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You need a Zirconia sensor for the Jaycar kit. I have a third plug in my exhaust just in front of the muffler for the Zirconia. Zirconia = first type of sensor common to Holdens etc. These generate a 0=15:1 to 1Volt signal=14.0:1 signal rather than having a variable resistance to a supplied voltage like Titania.
Regards Philip A

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Originally Posted by Utemad

Thanks Ron.
I've just read through that and although that is not the converter I have I guess the setup is the same.

Are there only meant to be 5 pages? The page numbers on the bottom of the pages show there should be 19. It refers to section 4.1 if you are not going to check the tune with an EGO but 4.1 isn't in the file.

Going by the Landi Renzo website I have no idea what model my converter is.
LANDIRENZO -

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I'll double check but I'm sure the other pages were in other languages.

There are Landi and Landi Renzo - apparently different companies. LSE converters are, it seems Landi, not Landi Renzo.

See Landi Gas Srl : Technical Info and LSE converters

1001 is right on the money.
In fact I fitted one of these convetors to a forklift to day replacing a clagged one.
The common name for it is a S80 Landi electric and I retailed the new one for 230.00 dollars.
There is another version with a inbuilt vacuum lock off instead of electric.
They are a very good trouble free convertor.
Just remember all gas convertors should be cleaned and fitted with a overhaul kit every four years with normal running.
Note, one bad load of gas can clagg a gas convertor.
The s80 series of Landi convertors can be rebuilt OK , but I find costs and time make replacement a better option.
Important......with LPG ......If you dont know ,dont play with it.
If your convertor is freezing up or smelling a bit of gas from the air cleaner or exhaust pipe......let things sit for a while ,start a fire away from the vehicle and boil the billy and then slowly pour the hot water over the gas convertor as this MAY get you started or help.
Humble forklift and Landrover mechanic
Ron

Thanks Philip. Might get the exhaust shop to fit a nut for that at the same time. Could put a short bolt in it for the time being.

That's very interesting Ron B. That is certainly what I have. Maybe there was a split in the business years ago. Can't imagine there not being some sort of relationship at some stage with such a similar name.

Thanks 101Ron. Good to know they are a good bit of gear.

THe story is there is Four brothers working separately in Italy producing their own version of a three stage gas convertor and therefore the similar names.

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Originally Posted by Utemad

Thanks guys.

Dan do you have the same unit?

I've been searching on Google and LPG Discussion Forum but have yet to find any DIY tuning info. Little disconnected bits here and there but nothing particularly useful.

Anyone know where I can find this info now I know what the bits are?

I'm going to fit the factory oxygen sensors for the 14CUX whenever they arrive so might be able to use them to help get the right mixture. Not sure how that would go since there are two (one for each side).

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Trade school was pretty informative :(

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Originally Posted by 101 Ron

1001 is right on the money.
In fact I fitted one of these convetors to a forklift to day replacing a clagged one.
The common name for it is a S80 Landi electric and I retailed the new one for 230.00 dollars.
There is another version with a inbuilt vacuum lock off instead of electric.
They are a very good trouble free convertor.
Just remember all gas convertors should be cleaned and fitted with a overhaul kit every four years with normal running.
Note, one bad load of gas can clagg a gas convertor.
The s80 series of Landi convertors can be rebuilt OK , but I find costs and time make replacement a better option.
Important......with LPG ......If you dont know ,dont play with it.
If your convertor is freezing up or smelling a bit of gas from the air cleaner or exhaust pipe......let things sit for a while ,start a fire away from the vehicle and boil the billy and then slowly pour the hot water over the gas convertor as this MAY get you started or help.
Humble forklift and Landrover mechanic
Ron

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A couple of K's away and up hill...

LPG is heavier than air and will travel long distances before it disipates so even knowing you are 200 or 300m from a house down hill from your car doesnt mean that if the conditions are right the pilot on their hot water service wont blow you and your car sky high.

This is why unless your trained to play with it DONT, there is too much at risk to just get a bit of info off the net and start unbolting stuff.

BUT if you are still going to stuff with it, Turn the tap off, make the area safe (keeping in mind what I just said about ignition sources etc) and run the engine until it stops instead of bleeding the LPG out of the line.

When you are done doing what you were doing check all fittings and gaskets with soapy water once you have turned the system on again.

DONT take short cuts.

IF IN DOUBT DONT....Really.

LPG is safe if things are done properly but it has to be a sealed system with good quality componantry for it to be safe.

Sorry if I sound a bit preachy but I think you all understand where Im coming from and it's not me that Im worried about.

Thanks Mcrover. I understand your thoughts. I have no plans to pull anything apart. I have enough trouble keeping the air in my on board compressor system let alone pulling the hardware apart for my LPG system.

This was just for me to get a better idea of how it works.

Interesting though is that in the UK it appears you can just buy an LPG kit and do it yourself. No problem if all goes well but as you say, one unknown leak and you are in a lot of trouble (as well as everyone around you).

Mcrover's right, it can be very dangerous and DIY is simply not an option if not licenced (and under the new laws individuals are no longer licenced the business/company is responsible).
I wouldn't touch it beyond basic fine tuning, which of course was the title of the thread;).