LPG snags

[kwak636r]

Hi all I have been working on my little project for a few days now and just sifting through the snags I find.
I was running her today and noticed she was red hot, I thought i had cured that, but found a leak from the lpg regulator.
I'm going to fit new coolent pipework.
The lpg regulator has a small brass nipple at the top and my question is this..... should this not be concerted to the manifold or something like that as it looks lik a vac line.
It's a landi renzo system but looks like a blind 2 year old fitted it.

[fandango151]

There are many types.

You should have water pipes x2, vac line, liquid gas in and vapour out.

Some designs have an extra nipple which is a vent so there is a reference to atmospheric pressure. Add a pic or post a model number.

[kwak636r]

Thanks for reply I think it's the vac line I'm interested in will get a picture

[kwak636r]

http://i250.photobucket.com/albums/gg249/kwak636r/Mobile%20Uploads/mini3_2744_2_zpsbkhfiiu7.jpg (http://s250.photobucket.com/user/kwak636r/media/Mobile%20Uploads/mini3_2744_2_zpsbkhfiiu7.jpg.html)


Small brass pipe at top

[fandango151]

http://i250.photobucket.com/albums/gg249/kwak636r/Mobile%20Uploads/mini3_2744_2_zpsbkhfiiu7.jpg (http://s250.photobucket.com/user/kwak636r/media/Mobile%20Uploads/mini3_2744_2_zpsbkhfiiu7.jpg.html)


Small brass pipe at top

I had one of those.. It was fitted upside down and filled with water and rotted internally oh dear uklpg installer.

That is the vac line. Goes to manifold, usually T pieced to a sensor. It goes manifold t piece and then line to sensor and then to reducer.

Without it ... It won't run right. The vac pulls on a membrane inside to control valve inside and regulates gas. High vac reduces gas so less at idle, low vac spring opens for higher demand times with open throttle.

[fandango151]

Forgot to add if it leaks and is beyond saving a kme silver reducer works wonderfully well on my v6 and isn't fat off the price of a repair kid for the landi.

It took me an age to find the leak on mine. The brass waterbpipes should spin and only have little seals on it was a red herring. The temperature sender in the pipework had a screw in sensor with an onrog which was kaput. A new one from tinlet tech? No direct contact just in a solid brass pipe and away we go.

[kwak636r]

Cool thanks for the info, when it tee's off to a sensor is that part of the lpg system too.
Also does the kme work with the landi software

[fandango151]

Cool thanks for the info, when it tee's off to a sensor is that part of the lpg system too.
Also does the kme work with the landi software

Out on a limb here as all systems are different but generally yes in answer to that ... Aeb systems use a pressure sensor which has 2 pipes going to it. One is the pressure of gas at the gas rail and the other is the vac pressure. I say normally as there are lots of set ups.

The reducer doesn't have any direction connection to the gas system electronics. The only thing is the solenoid which lets the liquid gas flow in. The adjustment is mechanical so a screw to set a reference pressure (bit on top of the landi) then the gas flow is adjusted by vacumme which gas ECU's reads via the sensor above and does its calculations.

There are some caveats I must add. I'm talking about a multi point injection system and not 100% sure what you have and no matter what you touch or swap you will need the cable and software to tune the system. Might be worth posting up pics of the ECU and gas injectors and I'm not am expert by any means.

[kwak636r]

You know more than I at the moment, it's my first time tackling gas and mainly came about as I have overheating issued and found a water leak at the reducer. Also had problems running and misfiring, I have it idling nice now but not on gas, and I have seem to have got rid of eml.
Will get pictures of set up for you, it has six injectors and edu is in battery box

[fandango151]

You know more than I at the moment, it's my first time tackling gas and mainly came about as I have overheating issued and found a water leak at the reducer. Also had problems running and misfiring, I have it idling nice now but not on gas, and I have seem to have got rid of eml.
Will get pictures of set up for you, it has six injectors and edu is in battery box


Can you take a pic of eci with front label and also the info normally etched on the back.

[kwak636r]

http://i250.photobucket.com/albums/gg249/kwak636r/Mobile%20Uploads/IMAG0083_zpsdusvlylk.jpg (http://s250.photobucket.com/user/kwak636r/media/Mobile%20Uploads/IMAG0083_zpsdusvlylk.jpg.html)

http://i250.photobucket.com/albums/gg249/kwak636r/Mobile%20Uploads/IMAG0082_zpsvguaqvh8.jpg (http://s250.photobucket.com/user/kwak636r/media/Mobile%20Uploads/IMAG0082_zpsvguaqvh8.jpg.html)

http://i250.photobucket.com/albums/gg249/kwak636r/Mobile%20Uploads/IMAG0080_zpsrpoo4kb0.jpg (http://s250.photobucket.com/user/kwak636r/media/Mobile%20Uploads/IMAG0080_zpsrpoo4kb0.jpg.html)

http://i250.photobucket.com/albums/gg249/kwak636r/Mobile%20Uploads/IMAG0079_zpshaztcuio.jpg (http://s250.photobucket.com/user/kwak636r/media/Mobile%20Uploads/IMAG0079_zpshaztcuio.jpg.html)

[kwak636r]

Sorry about delay haven't been near the car we just had a baby.