Auto-LPG Conversion Thread

[bigMIKE]

Noticed that some refilling stations' lpg are cleaner than others. Check if your station have periodic cleaning schedule. We have noticed clogging (oil residue) injectors specially from stations with underground tanks.

If the injectors are clogged most installers would recommend a change of injectors and these are at least Php5K upwards depending on the brand. Valtek Italy has given us the authority to clean and recalibrate the injectors and this would be part of our warranty service.

Also just concluded conversion on a fleet of trucks to run on Recycled Vegetable Oil if anyone is interested

[XOOMaster]

Noticed that some refilling stations' lpg are cleaner than others. Check if your station have periodic cleaning schedule. We have noticed clogging (oil residue) injectors specially from stations with underground tanks.

If the injectors are clogged most installers would recommend a change of injectors and these are at least Php5K upwards depending on the brand. Valtek Italy has given us the authority to clean and recalibrate the injectors and this would be part of our warranty service.

Also just concluded conversion on a fleet of trucks to run on Recycled Vegetable Oil if anyone is interested

Hi bigMike how are you? I agree periodic check-ups have to be done to make sure that LPG filled in your car is clear of residue. We do that maintenance here at our station.
On residue going to your Valtek rail, installing a filter before going to the vaporizer plus another filter from vaporizer to your rail should solve some problems from these impurities.
Cheers!

[ghosthunter]

It seems there is a "small" problem with SGI-LPG systems being sensitive to the cleanliness of the LPG supply. Some Auto-LPG refueling stations seems to pump "contaminated" LPG. The contamination is oil.

Since LPG injectors were designed to flow gaseous LPG so oil (in liquid form) can clog up the injector from flowing properly.

Venturi LPG systems seems to be unaffected by this problem.

LPG stations who regularly clean their tanks are better because this will minimize the oil contamination. Along Shaw, the better stations seems to be CLEANFUEL and TOTAL. Worst offender along Shaw is Petron Shaw.

[Mile2]

So does it mean that the LPG fuel filter is not capable of filtering this kind of contaminant? as such particulate matter only?

[abetg]

is this also normal? amoy lpg sa engine bay lalo na sa side na kung nasaan ang vaporizer. noticeable din ang amoy. mas malakas amoy after a long drive.

on lpg, my tachometer reading is about 800rpm at idle (aircon off) and about 1000rpm with aircon on. ok din lang po ba ito?

[bigMIKE]

Hi bigMike how are you? I agree periodic check-ups have to be done to make sure that LPG filled in your car is clear of residue. We do that maintenance here at our station.
On residue going to your Valtek rail, installing a filter before going to the vaporizer plus another filter from vaporizer to your rail should solve some problems from these impurities.
Cheers!

We do put two filters but there are still residues that gets into the injectors. Anyway we do recommend certain stations to our clients to avoid this problem.

[n5110]

is this also normal? amoy lpg sa engine bay lalo na sa side na kung nasaan ang vaporizer. noticeable din ang amoy. mas malakas amoy after a long drive.

on lpg, my tachometer reading is about 800rpm at idle (aircon off) and about 1000rpm with aircon on. ok din lang po ba ito?

parang hinde normal ito, baka may leak better have it check boss. yung sa akin i can see white residue sa vaporizer pero walang amoy, not sure if this is leak. minomonitor ko pa.

about the tachometer reading parang hinde naka adjust ng tama yan, yung sa akin naka set sa 700-800 idle without AC pag naka AC naman di nalalayo, minsan nag ffluctuate yung idle, nag ddrop at 400 pero madali naman bumabalik sa 700 with or without AC. baka airfilter niyo madumi na.

[ghosthunter]

So does it mean that the LPG fuel filter is not capable of filtering this kind of contaminant? as such particulate matter only?

I think the LPG filter isn't design to separate liquids from the LPG itself.

Cars equipped with venturi LPG systems aren't affected. SGI systems with their injectors are the ones that will have problems if the oil contamination is severe enough.

[ghosthunter]

is this also normal? amoy lpg sa engine bay lalo na sa side na kung nasaan ang vaporizer. noticeable din ang amoy. mas malakas amoy after a long drive.

The smell would be normal since venturi lpg systems do have some "leak-down" from the intake manifold.

[ghosthunter]

I wonder if this has something to do with sparkplugs wearing out sooner on some Auto-LPG equipped cars?

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Side note:
http://www.bosch.com.au/content/language1/html/5673.htm

Check the "Suitable for LPG" note on these set of sparkplugs... do they know something we don't?



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