Auto-LPG Conversion Thread

[niky]

It'll get higher, but I don't know if it'll reach diesel-gas levels (and remember, diesel here is artificially cheap due to government subsidy). LPG has diverse sources, and is not reliant upon crude oil production.

The price inflation locally seems artificially induced. We'd been talking about the possibility of hoarding a few days ago, and lo and behold, the government has already caught at least one trader hoarding LPG canisters.

I'm sure there will be many more to follow.

[n5110]

* mile2 &GH : thanks for the advice. will replace the plugs with a step colder, check ko sa suking tindahan. update ko kayo. maraming salamat

[quan2boy]

Curious lang ako...so dun sa mga meron real-time fuel consumption meter (e.g. Fortuner), I guess it would be interesting to see the "mileage" you're getting on the display when running on LPG??

[Mile2]

Curious lang ako...so dun sa mga meron real-time fuel consumption meter (e.g. Fortuner), I guess it would be interesting to see the "mileage" you're getting on the display when running on LPG??

I have MID in Innova same with other IMV (Fortuner and Hi-Lux), the display is the same as it calculate base on the matrix of Air-fuel mix, electronic gas pedal movements, electronic throttle, cam/crank MRE sensor and emission sensors. Basically, it does not include in the matrix the gasoline tank meter as it will not give accurate reading all the time when the car is moving.

So when on LPG mode, the MID average Km/li reading is just as normal when in petrol. I usually get a minus 1-2 average Km/li reading when on LPG.

[quan2boy]

I have MID in Innova same with other IMV (Fortuner and Hi-Lux), the display is the same as it calculate base on the matrix of Air-fuel mix, electronic gas pedal movements, electronic throttle, cam/crank MRE sensor and emission sensors. Basically, it does not include in the matrix the gasoline tank meter as it will not give accurate reading all the time when the car is moving.

So when on LPG mode, the MID average Km/li reading is just as normal when in petrol. I usually get a minus 1-2 average Km/li reading when on LPG.

Hehe. Thanks Mile2. Akala ko kasi malilito yung computer kasi di nababawasan yung fuel sa tank...

[niky]

It won't be accurate. It's guesstimating based on injector duty cycles (based on the ecu signals sent to the injectors, not based on whether the injectors are working or not), and as the air-fuel ratios are different on LPG, and the LPG injectors are "trimmed" to a different calibration than the gas (even with the same AFR based on O2, since stoich is different for LPG and gasoline), it'll always be a little off.

[n5110]

question lang po:
1.0 has anyone tried using resistor type plugs? if yes does it improve your lpg performance?
2.0 how about iridium and other type of spark plug aside from the plugs recommended by OEM. may nakagamit na ba and does it also improve your lpg performance.

reason for the question:
im using lpg for almost 5 months now with stock plugs * 7K km running on lpg. the problem now is when the car is idling without AC, nag ddrop and RPM to the point na mag stall na yung kotse. during the first 3 months naman hinde ganito.

as recommended by greenfuel yesterday (alvin) try to replace the plugs with resistor type or the 6pbs type. i want to check with lpg user first para malaman kung may significant impact ba ito otherwise i will stick with the stock plugs. Thanks.

just came back from greenfuel, nakita din ang problema ng kotse ko, it turns out na yung vaporizer ang may sala, after replacing with a new (?) one, nawala yung problema na rough idling. sabi ni alvin meron daw part/s sa loob ng vaporizer na madaling masira, yung kinabit niya modified na raw.

so far hanggang makauwi ako dito sa bahay hinde erractic ang idle even if i turn off the AC. ayos na at salamat sa team greenfuel.

ang hinde na lang ayos ngayon yung presyo ng lpg, 21.50 sa cleanfuel sucat..rollback naman jan

[ghosthunter]

just came back from greenfuel, nakita din ang problema ng kotse ko, it turns out na yung vaporizer ang may sala, after replacing with a new (?) one, nawala yung problema na rough idling. sabi ni alvin meron daw part/s sa loob ng vaporizer na madaling masira, yung kinabit niya modified na raw.

Usually its the diaphram.

[n5110]

due to dirty lpg kaya?

[ghosthunter]

due to dirty lpg kaya?

no. too many adjustments or over-adjustment beyond the diaphram's limit.

[n5110]

ang madalas lang naman na in a adjust nila is the idle screw sa itaas with the use of flat head screw driver. sana hinde naman due to poor quality of lpg kit kasi baka bumalik na naman ang problema.

[Zoolander]

I'm a total newbie sa auto-LPG. Where can I find an updated F.A.Q? I want to convert a SUV kasi.

Would auto-LPG offer the same performance as unleaded? Parehong hatak, walang slowdown? Same horsepower?

Does it harm the engine any more or less than when the car is running on unleaded?

Low maintenance ba ito?

[Mile2]

I'm a total newbie sa auto-LPG. Where can I find an updated F.A.Q? I want to convert a SUV kasi.

Would auto-LPG offer the same performance as unleaded? Parehong hatak, walang slowdown? Same horsepower?

Does it harm the engine any more or less than when the car is running on unleaded?

Low maintenance ba ito?

Use your browser and key in the keyword "auto lpg" and you will get tons of information/FAQ from simple to more technical.

or you can back read this thread, I'm sure all your questions in mind are answered in this thread already.

or you can visit local installers to see how things are done on a car. See this thread also http://tsikot.yehey.com/forums/showthread.php?t=50159

[ghosthunter]

I'm a total newbie sa auto-LPG. Where can I find an updated F.A.Q? I want to convert a SUV kasi.

Would auto-LPG offer the same performance as unleaded? Parehong hatak, walang slowdown? Same horsepower?

Does it harm the engine any more or less than when the car is running on unleaded?

Low maintenance ba ito?

Your questions have already been answered in this thread. You might want to take the time to read through it. Your questions and others more have been answered in this thread.

As for converting now, the current price difference of gasoline and LPG is not that big so it might not be economically feasible for you to convert to Auto-LPG unless you are doing a whole lot of kilometers in a month.

[milecord]

New Air Filter Is No Assurance You'll Pass the Emission Test

Let me share this recent experience I had with my LPG-equipped Ford Lynx. In preparation for the annual vehicle registration, particularly the emission test, I replaced my 6-month old air filter with a brand new one (OEM), aside from other engine maintenance works. To my surprise, the Ford failed the hydrocarbon (HC) emission test ALTHOUGH it passed the carbon monoxide (CO) test by a safe margin. To save me Php400 and the trouble of having to undergo another test, I shifted to gasoline and asked the technician to do another round to verify. You know what? The Ford passed with flying colors on gasoline.

When I had the car checked, it turns out the car was running too lean on LPG. I never associated running lean on LPG with high HC emission before, and so this is a new learning for me. David Do (EROOM) took the time and effort of bringing out his emission testing equipment to show me the effects of running rich and lean(LPG) on HC emission. That definitely convinced me! He also advised me that next time, I should have the car checked by the LPG installer/dealer before the yearly emission test to make sure. Naalala ko, the last check was 3 months before with a (just cleaned/nabugahan) 3month old filter.

LESSONS LEARNED:
1. OEM air filters outperforms replacement filters. Compare mo: Hipan mo yun filter on one side, ilagay mo palad mo sa kabila. Ramdam mo mas malakas ihip ng hangin sa OEM filter. Inspect mo sila visually: iba ang material, design, and workmanship. I was using replacement filters (Php300 sa autoshops) for sometime, but when the price of OEM air filters went down (Php985 at Ford Commonwealth. Baka mas mura pa sa Autorama Banawe.) sabi ko subukan ko naman baka pwede tumagal ng one year.

2. Huwag mahiya bumalik-balik sa installer/dealer for checkups. Looks like LPG-converted engines are sensitive to changes to air-LPG fuel mixture (SGI kits probably excepted). Our dealers owe it to us to keep our engines in tune. That is why its important to have your car converted by a shop most accessible to you.

OVERALL, notwithstanding these minor hassles, kahit pa Php30 na lang ang gasolina, I'm still very happy with my LPG-converted Lynx. Nagpa-convert ako June 2008 just before gasoline became most expensive and so I was able to recover the cost of conversion in 4 months. If properly tuned, I do 9-10 kms/l. I still save on fuel expense though just slightly, but I help save the environment.

[ghosthunter]

Failing HC emissions would have meant your car was running rich and not lean, right?